Review Index:

The AMD Ryzen Threadripper 1950X and 1920X Review

Author: Ryan Shrout
Subject: Processors
Manufacturer: AMD

The X399 Platform, Socket, Cooling, and Memory

Along with the new Ryzen Threadripper processors comes a new chipset, a new socket, a host of cooler questions, memory compatibility and more. The new TR4 socket is a beast with 4094 pins in a massive footprint that makes previous processors tiny by comparison. Installation of the processor in this new socket is much more complex than other solutions as well, involving a sled, tray, dual retention brackets, and even a torque wrench. Seriously. You can see the install process in the video I posted last week below:

The new X399 chipset connects to the Threadripper processor with 4 of the 64 lanes of PCIe 3.0 from the CPU and adds support for 2x USB 3.1 Gen2 ports, 6x USB 3.1 Gen1 ports, 6x USB 2.0 ports, 8x SATA channels, and some GPP PCIe 2.0 lanes (x8). With 60 lanes of available PCIe 3.0 on the Threadripper processor even after connecting the chipset, the majority of the connectivity for graphics cards, add-in network controllers, NVMe storage devices, and anything else will be through the processor. That’s great news as it means less latency and more bandwidth between external devices and the host.

One interesting caveat that we are still exploring is how the added latency of die to die communications we mentioned above might come into play with external devices. If you have two graphics cards on full x16 PCIe connections, but one each from each of the CPU dies (each has 32 lanes of PCIe total), then in theory you would have to cross that Infinity Fabric during communications. The same would be true of NVMe SSDs running in a software RAID solution. We are still working out ways to test for this possibility, so stay tuned as we fire up the multi-GPU and multi-SSD benchmarking.

Motherboards based on the X399 chipset will be available from all the vendors you would expect: ASUS, MSI, Gigabyte, and others. Expect these motherboards to come with a similarly high prices, similar to what the Intel X299 and X99 platforms garner. Features like 802.11ad and 10Gb Ethernet will flourish here, but you are going to pay for those flagship features. Being able to utilize all of the connectivity that Threadripper provides means integrating technologies that we just haven’t seen yet.

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We have confirmed that X399 and the Threadripper CPU do not support NVMe RAID natively and you want to double or triple your NVMe storage, you are going to be stuck using Windows software RAID. While that is fine for most users, it does mean the array will be non-bootable – kind of a bummer for an otherwise top-of-the-line configuration. AMD tells us they are working on a solution to integrate on-chip array capability but it is not an easy task; just ask Intel and its partners that have been struggling to get it perfect for a year or more.

There was a lot of concern over the stability and maturity of the X399 chipset and motherboards based on after the Ryzen 7 and X370 launch. I am happy to report that through a couple of weeks of testing and banging on it, our ASUS X399 Zenith Extreme motherboard has been rock solid, with no crashes and no stability concerns that weren’t related directly to overclocking. Drivers seem to be working, the headaches and confusion around memory support have been ironed out, and it just feels like a more robust system than Ryzen did at launch. Clearly the team at AMD has learned from that situation, and it worked with board partners to help make today’s release a solid one. No doubt that engineers from ASUS, MSI, Gigabyte, and others have a bit more time with the architecture under their belt as well, adding to the improvement.

Memory support for Ryzen Threadripper is listed in the reviewer’s guide as follows:

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The highest memory speed supported without “overclocking” is 2667 MHz, and that is when running four DIMMs (one in each channel) that are single rank. If you want to populate all 8 DIMMs on Threadripper with single rank modules you will be limited to 2133 MHz, a significant reduction. Moving to dual-rank modules those speeds are 2400 MHz and 1866 MHz. Ouch. Thankfully, overclocking the memory on these platforms does not yet appear to be a concern. I have been running four DIMMs (single rank) at 3200 MHz on Threadripper without a hiccup and the performance improvement has been impressive. Just as we found with Ryzen, memory speed matters more here than on any previous AMD or Intel platform.

With a 180-watt TDP, cooling the Ryzen Threadripper is going to be a critical task. The heat spreader on the CPU is massive, unlike anything we have seen before in the consumer space. Luckily, AMD is telling us that it’s not imperative that users cover the entire area to get effective cooling. In our experience, that is definitely the case. AMD sent along a brand new Thermaltake water cooler with a 360mm radiator that uses a standard Asetek “teeth” style mounting bracket. Using the bracket that came with the Threadripper CPU, mounting the cooler was as simple as any other platform, with more concern over the placement of the thermal interface. Kyle over at HardOCP has already done a great job looking at the surfaces, mating process, and TIM application if you are interested in more.

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Full coverage coolers are on the way, as you would expect, though I don’t think we will see them in large volumes. Because the larger size would likely preclude the same coolers from working on other motherboards, going all-in on a Threadripper cooler would be a risky proposition. Instead, I expect to see the likes of Corsair and others doing a lot of in-house testing to find the best way to adapt coolers to the TR infrastructure.

Measuring the thermals of Threadripper still requires knowledge of the idea of an offset. The Threadripper processor, like Ryzen 7/5/3 before it, tracks two different thermal sensors.

  • Tjunction (Tj): the average true temperature at the interface point between the processor die(s) and heatspreader.
  • Tcontrol (Tctl): an AMD proprietary offset that is designed to govern automatic fan policies. The Tctl offset for the AMD Ryzen™ Threadripper™ processor is +27°C to Tjunction.

The earliest BIOS’ we encountered only reported the Tctl temperature to us which idles at around 55C. Taking into account the offset, our CPU was running at around 28C at idle state – more in line with expectations. AMD recommends using HWiNFO v5.55-3210 (or later) for temperature monitoring as it has built in support to compensate for the offset for Threadripper.

Temperature Testing

If you want a deep dive into temperatures on Threadripper and even the best way to apply thermal paste, I recommend you watch this 22 minute discussion on it from our buds over at Gamers Nexus. It’s definitely worth the time.

For what we have seen using the HWiNFO64 application, the AMD Ryzen Threadripper processor definitely will be a hot and power hungry CPU. Using the supplied 360mm cooler from Thermaltake that shipped with our review kit, temperatures weren’t really a concern during standard testing, even after extended periods of full utilization.

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Remembering all the way back to the first page of our story, Threadripper has a 27C offset between the Tctl and Tdie measurements to help fan and cooling systems better manage temps. Under a full load of Blender, the 1950X stabilized at a temperature of 59.3C. That’s good considering the high core count and the inability to cover the full heatspreader for today’s cooling solutions.

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For comparison, the 7900X is using a 240mm cooler but still maintains a temperature under 50C when not overclocked.

With a 180 watt TDP, buyers should not underestimate the cooling capacity needed for Threadripper. Expect to need at least a 240mm radiator liquid cooler, but I would assume anyone considering a $999 processor would be going down that path anyway. 

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AMD still maintains the Ryzen power plan for Windows to help optimize the CPU states for best performance without sacrificing power consumption drastically. We did testing of this power plan back in April with Ryzen 7 and found that it did indeed help performance in some cases with changes made to help minimize the parking of cores, and to also speed up the waking of them. If you install the latest AMD driver package, this profile will be automatically installed on your system and selected. As far as I am aware, no changes were made to this profile to adjust for the NUMA/UMA memory configuration.

Video News

August 10, 2017 | 09:18 AM - Posted by Daniel Moran (garwynn) (not verified)

Pretty much sounds like the messaging was spot on for how they were communicating to consumers what to expect on Threadripper. Just like Ryzen it will offer a great value by leveraging moar cores at a lower price per core.

Now will come the questions on how to put this all to use. What I see coming will be a consumer version of virtualization. I've got more than a few ideas on how to put this system to work, looking forward to getting my hands on it down the road and seeing how much of that actually can happen.

August 10, 2017 | 10:15 AM - Posted by Ryan Shrout

Virtualization is a good way to think through using all these cores. If you want to use 4 cores for a HTPC box, 4 for a NAS, etc., it could be a very flexible system.

August 11, 2017 | 02:24 AM - Posted by quest4glory

Exactly. I can run more simultaneous VMs on a machine with more cores and more memory bandwidth (and PCIe lanes for additional SSDs) than are reasonable on my 5930K. Probably not a 2017 purchase for me, but 2018 is going to be here before you know it.

August 15, 2017 | 11:48 AM - Posted by DiagramsRUz (not verified)

This wikichip refrence materal/link on the Zen microarchitecture has become very detailed and is a great refrence materal compared to any wikipedia entry on the subject matter. The Zen block diagrams are as detailed as I have ever seen concerning Zen functional units and it will make for a great refrence source to have bookmarked. Plenty of cross refrences to all AMD's and others similar products with web based methods of sorting by attributes.

August 10, 2017 | 09:32 AM - Posted by Thisguy (not verified)

Very good write up, any reason your not including Ryzen 5 in your Perf/$?

Only reason I ask, your including the I5 which holds its own in the Perf/$ agianst just about everything else.

August 10, 2017 | 10:14 AM - Posted by Ryan Shrout

Just spacing and timing honestly. I think the Core i3 and Pentium would hold up well there too but they aren't really in the same performance class.

August 10, 2017 | 10:45 AM - Posted by Thisguy (not verified)

Thank you for the reply, and thank you for the great coverage.

August 10, 2017 | 09:33 AM - Posted by Anonimo (not verified)

Is this the i9-7900X review ?

August 10, 2017 | 09:38 AM - Posted by Jabbadap

Heh had the same thought when reading synthetic benches.
But probably it's just still in writing over old i9 7900x review, reviews are usually rushed to make in deadline(i.e. anandtech's review was pretty mess too right after nda lift).

August 10, 2017 | 09:52 AM - Posted by Honza (not verified)

They probably forgot to replace the commentary text that goes with the graphs. Or didn't manage to do it on time.

August 10, 2017 | 10:14 AM - Posted by Ryan Shrout

Every editor has been fired, but the inline text has been fixed. ;)

August 10, 2017 | 09:39 AM - Posted by John H (not verified)

Need context. 37% and 30% ... faster ...

August 10, 2017 | 09:45 AM - Posted by derz

smells like freedom

August 10, 2017 | 10:06 AM - Posted by dagnamit

Welcome back AMD and thanks for stopping the race to the bottom by taking a stab directly at Intel's high-end profit margins. I knew that Intel holding back extra cores for nearly a decade would come back to bite them in the ass. If AMD's next gen can increase IPC and 15% clock boost we'll have some truly ridiculous competition in this space again.

Goddam I can't remember the last time there's been this much excitement about a computer component release. It's the first truly competitive part AMD has put out since probably the HD 7900 series GPU's, over 5 years ago. I'm due for an upgrade within a year, so the timing of all this is simply outstanding.

August 10, 2017 | 10:19 AM - Posted by WhereIsThreadripperz (not verified)

From: "Media Encoding and Rendering" page!

"A classic test of multi-threaded capability, the Core i9-7900X sees gains of 15% over the Core i7-6950X and 35% over the Ryzen 7 1800X." [It's a Threadripper review what about TR's performance]

"Here is another instance of strong single thread performance improvements allowing the Core i9-7900X to match the performance of the Core i7-7700K, the previous single-threaded king. A 25% improvement over the 6950X gets us a score of 197. On the multi-threaded result the 7900X has an advantage 15% over the 6950X and a 34% lead over the Ryzen 7 1800X." [It's a Threadripper review what about TR's performance]

"Similar to the CineBench R15 scores above, POV-Ray gives the new 7900X a 22% lead over the 6950X and a 38% lead over AMD’s Ryzen 7 1800X." [It's a Threadripper review what about TR's performance]

"We run two different Blender workloads, and both show interesting data for the Core i9-7900X. While in the BMW render we see a 15% advantage for the multi-threaded performance of Skylake-X over the 6950X, that lead is only 6% in the much longer Gooseberry workload, as it spends more time in procedural calls." [It's a Threadripper review what about TR's performance]

This is a Threadripper review and all there is on the "Media Encoding and Rendering" page Text Wize is Ryzen 7 1800X against Intel, or Intel against Intel comparsions!
What is with these comparsions in a Threadripper Review and these the non related to Threadripper notes!

August 10, 2017 | 10:31 AM - Posted by Ryan Shrout

This has all been fixed and updated. Sorry!

August 10, 2017 | 10:30 AM - Posted by KamoteMan (not verified)

why didn't you put the overclock power consumption of intel in your chart with oc threadripper power consumption?

in hardware unbox review threadripper is -10% lower power consumption compared to intel when overclock.

August 10, 2017 | 10:38 AM - Posted by Johan (not verified)

Thanks for giving a much better all round review than what Anandtech did. They are clearly in Intel's pockets. That is such a biased review.

August 10, 2017 | 11:09 AM - Posted by cpucrust (not verified)

Thanks for the awesome review - PCPer is continually improving.
Great to see all this wonderful competition from AMD.
I'm firmly in the content creator use case and gaming secondly.

Was close to pulling the trigger on a 1700/1700X/1800X system to replace my Intel 2500K system. I may go TR 1920X/1950X now, however the price of X399 is a bit high (new product pricing).

Looking forward to continuing TR coverage - thanks!

August 10, 2017 | 11:12 AM - Posted by Ryan Shrout

Thanks for reading!

August 10, 2017 | 11:11 AM - Posted by Kilobytez95 (not verified)

285 watts? Really? Can motherboard VRMs even supply that kind of power? Surely these TR4 platform boards know that thread ripper consumes allot of power so i guess they maybe build in a VRM that can supply a little bit extra than spec just incase but 285 seems crazy. I don't know if I'd be comfortable putting that much power through my VRMs every day. I probably just wouldn't overclock the chip until after i upgraded it years later. Maybe I'm wrong and the boards really can handle that kind of power. I also wouldn't run any AMD VEGA GUPs unless I had a very beefy PSU like 1250 watts or higher.

August 10, 2017 | 04:34 PM - Posted by Anonymous (not verified)

You wouldn't want to run that on a motherboard with lower-end power delivery, but that kind of wattage is not anything special for overclocking. For a year or so, I ran a 6-core Phenom II at 1.6v core/1.4v NB which used over 300w on just the CPU, and it survived fine even on a midrange 8-phase motherboard (Sabertooth 990FX). However, someone else with similar hardware blew out their VRM with 1.65v so this is probably about the limit for 8-phase boards. The ASUS threadripper board used in this review seems to be 8-phase, but there's no reason why there couldn't be more robust x399 boards for heavy overclocking.

The larger concern, I think, is how much voltage the CPUs can take before silicon degradation becomes a serious issue, which is a lot harder to test and a lot harder to address, but 1.4v shouldn't be too bad.

August 11, 2017 | 12:47 AM - Posted by James

How many graphics cards take close to 300 Watts? I don't know why people don't think of this. That is just like everyone suggesting that you must have water cooling for TR. Most video cards, even high end cards close to the 300 Watt range, just use an air cooler. A CPU socket can actually use a much bigger air cooler than a graphics card. When you get into overclocking, the power density can get high enough that you need the temperature differential that only a water cooler can supply. Standard clock TR is just two Ryzen die, so the thermal density is actually the same as Ryzen or lower if the clocks are lower. Water cooling should not be required unless you are overclocking significantly.

I am curious as to what the power consumption limits of the Epyc socket are. There has been talk of an HPC APU from AMD. That will probably be in an Epyc socket, so it will need to supply a large amount of power. The APU is rumored be two zeppelin die connected to a GPU with 4 links. The GPU will need to use HBM memory. I don't know if a full Vega die will fit on the MCM though. Four links (close to 100 GB/s?) with high bandwidth cache could make an exceptional HPC device. If you think about it though, it will essentially be TR combined with a powerful GPU in one socket. Even with lower clocks it is going to take a lot of power. It will also not be cheap.

August 14, 2017 | 04:11 AM - Posted by msroadkill612

APUs (ie. DIFFERENT processors linked by fabric) roots will be in low power mobile, meaning a minimalist single zen 4 core ccx & a single vega gpu on a single ~zeppelin type die. Cost effective Raven Ridge desktops are intended as minimalist 4C & 1x gpu.

If so, its a very different die from dual ccx zeppelin, and 4 core ryzens, which are 2x ccx w/ 4 cores disabled.

We cannot be certain HEDT APUs wont be multiples of this ~mobile die/mask.

August 10, 2017 | 11:34 AM - Posted by Clmentoz (not verified)

I'm wanting to see some workstation/productivity benchmarks done on any Epyc single socket SKUs and compared to Threadripper just to see what advantages there are to having 8 memory channels as opposed to only 4 for workstation/productivity workloads.

And the options for populating 8 memory channels with more DIMMS(at one DIMM per channel) across 8 memory channels for larger memory capacities able to be run at the maximum supported clock rates is what has me wanting to see some Epyc 16 and 24 core single socket SKUs directly compared to Threadripper on some workstation/productivity workloads.

The Epyc 7401P at 24 cores/48 threads should be price wise, CPU SKU to CPU SKU, a relatively direct comparsion as the Epyc 7401P costs $1075(Listed cost) compared to the cost of the TR(16 core/32 threads) 1950X's $999(Listed price). And it very much looks like AMD's Epyc customers can look forward to even better more affordable pricing from AMD on the professional Epyc SKU's compared to even AMD's consumer SKUs, and not only AMD's MUCH more affordable Epyc pricing compared to Intel's really costly Xeon high core count SKUs.

So feature wise and price wise there is not any economic reasons for any potential AMD workstation customer to be forced to purchase a consumer variant just to be able to have affordable options because the professional variants from AMD for single socket workstation/productivity workloads are actually the better deal ecomomically speaking.

That Epyc single socket 7401P SKU has with its 24 core/48 threads, 8 memory channels, and 128 PCIe lanes feature set somsthing that really needs to be looked at by anyone contemplating purchasing Threadripper if they only are needing to utilze the TR processor for workstation/productivity only workloads. Gaming workloads are another matter, but AMD has priced it's single socket Epyc workstation SKUs so low that it's damn incredible considering having that 7401P's 24 core/48 threads and the 8 memory channels and 128 PCIe lanes supported features for workstation/productivity workloads at that price point.

August 10, 2017 | 11:44 AM - Posted by cpucrust (not verified)

Some very good points - especially the potential price/performance of Epyc over TR. Perhaps my content creator and VM workstation plans might be better served with going Epyc over TR. Can just keep my 2500K for gaming use cases - rarely play AAA titles anyways when I have time for gaming.

August 10, 2017 | 12:18 PM - Posted by Mr.Gold (not verified)

Power consumption seem to be an ASUS motherboard problem ?
Your conclusions and chart might only be based and applicable to the ASUS motherboard.

check anandtech CPU power usage (cant link)

The 1950x consume 10w extra Vs 7900x at full load, and 3w at idle.

August 10, 2017 | 02:52 PM - Posted by VariablesAndUnknowns (not verified)

The 7900x is a 10 core/20 thread part while the TR 1950x is a 16 core/32 thread part. So that 10W extra at full load compared to the Intel part comparsion is a little more complicated than what you may be thinking about only the motherboards being different. And the TR 1950X is only using 10Watts more power uasge for 6/12 more cores/threads for TR(16/32) over the 10/20 cores/threads of the 7900x says some but not all about AMD's Threadripper power usage metrics.

Those big AVX units on Intel's SKUs can really drink up the power. And there is the question of the non linear scaling of power usage with increasing clock speeds. Threadripper is doing fine with the power usage for a processor with its core/thread counts and it's going to be more about what overclocks can be achived on each makers' respective 14nm process, Intel's 14nm process vs GF's(licensed from Samsing) 14nm process for AMD's TR.

Then there is the AMD vs Intel motherboard power usage question that is somewhat valid and there does need to be more attempts at getting at the ASIC power usage metric seperated from the other system power usage metrics in order to get a better look at things.

August 10, 2017 | 12:26 PM - Posted by vyvyvv6565898 (not verified)

In the fourth from last paragraph in the conclusion shouldn't " the 32-thread 1950X will likely over a sizeable performance advantage "

shouldn't over be offer?

August 10, 2017 | 12:44 PM - Posted by Power (not verified)

PCper can proudly go back to the name with AMD's moniker in it.

August 10, 2017 | 12:51 PM - Posted by Alansmithee (not verified)

Ryan, in regard to PCIe lanes, you mention 64 lanes for TR in the summary without the caveat that it's actually 60 net lanes. This perpetuates the myth that it's 64 TR lanes vs. 44 Intel lanes where it's really 60 vs. 44 since Intel's spec excludes DMI lanes.

While TR having 60 lanes is great in concept, if you look at all motherboards that exist for both platforms, TR has a maximum of 48 lanes to PCIe slots, while Intel has a maximum of 44 lanes to slots.

Both have 3 M.2 slots and yes, on TR the M.2 slots are plumbed to the CPU which is better for latency, but completely sacrifices RAID capability as the trade-off. And the slot arrangement for all TR launch motherboards is not very useful because two slots are hard wired to x8 and there are basically no x8 cards outside of server applications (now that 10GbE cards have gone to x4 3.0). It would have been more useful to split those lanes into more x4 slots and dispense with the chipset-connected slots.

Or better yet, it would be nice to have a PLX switched board for either TR or X299 along the lines of the Asus X99-E WS, so you could have 7 x16 slots with complete slot flexibility no matter what width of GPUs you were using.

August 10, 2017 | 03:56 PM - Posted by VariablesAndUnknowns (not verified)

That "maximum of 48" says a lot about Intel's platform with all of AMD's x399/TR SKUs having the same CPU supplied "maximum" with respect to any of AMD's Threadripper parts/SKUs offering the same 64 PCIe lanes directly from the Threadripper SOC/MCM with 4 of those PCIe lanes providing for the chip's Ethernet, USB, SATA, and other such functionality. AMD has no "Maximum" in the sense that all TR platform SKUs are not artificially segmented with respect to PCIe lane offerings on any of AMD's TR platform offerings. And that's 60 PCIe lanes out of 64 for the Motherboard makers to work with to provide for whatever slot requirements the motherboard's design is targeting.

Maybe for both the AMD platform and Intel platform/platform segments listed in the article those total and available PCIe lane metrics need to be included along with any Intel DMI connectivity that may support any Ethernet/USB/Other similar functionality. But keeping track of all the Different MB SKUs and their varying slots/other offerings will be a mostly ongoing process that can never be quite pinned down as far as to what exact usage/functionality is provided by the motherboard's design. So that leaves just the fixed/non fixed PCIe lane functionality provided from the CPU/MCM with metrics that can be pinned down and reported on with more certainty.

I'm also interested in AMD's Infinity Fabric(IF) off MCM connectivity options on any specialized motherboard SKUs that may be able to use the IF protocol for off MCM communication at a faster effective bandwidth than even PCIe 3.0 offers. I wonder if that off MCM Infinity Fabric usage is going to be limited at first to the Epyc CPU/motherboard ecosystem for any direct attached GPU accelerator usage in the workstation/server markets. I hope that some single socket Epyc MBs/"P"(single socket) branded Epyc CPU SKU systems will have that sort of Infinity Fabric off MCM functionality available for workstation usage.

August 10, 2017 | 01:26 PM - Posted by Johan (not verified)

Thanks for not being useless like Anandtech. They clearly don't understand Threadripper and it looks like they are paid by Intel to do so.

August 11, 2017 | 12:04 PM - Posted by Thatman007

Are you joking? Anandtech is actually reliable. PcPer are just being paid by AMD. ThreadRipper is crap. Its power hungry and isn't even good in gaming.

August 11, 2017 | 02:57 PM - Posted by Jeremy Hellstrom

Stop stealing my damn cheques.  I'd love to finally find out how much they are paying me.

August 20, 2017 | 04:39 PM - Posted by LG (not verified)

Funny, I would say the same about you. Eat some bran.

August 10, 2017 | 01:39 PM - Posted by Thedarklord

Liked the review, still very interested to see how Zen matures over the coming months and years. I do a good amount of virtualization and some content creation, but gaming is first, so might still be leaning on Skylake-X, but not sure yet.

One minor request, on the graphs comparing performance, can we label the bars or add a second legend to the top as well? Easier for viewing/comparing bars/colors.

August 10, 2017 | 01:54 PM - Posted by Thedarklord

How about a few tests comparing Threadripper vs Skylake-X running at the same frequency? (With no turbo boosting)

Would be interesting to see how they compare running at the same speed, and I am wondering if Intel's advantage in lightly threaded/single threaded is coming from a architectural benefit or more of a pure clock speed advantage.

August 10, 2017 | 06:51 PM - Posted by Your Name (not verified)

I don't understand this kind of analysis. We know Intel has better IPC. But nobody buys a computer and clocks it equal to some notional competitor!

August 11, 2017 | 01:03 AM - Posted by James

It is interesting that Intel is essentially competing on clock speed. I don't think the core IPC is really much higher. Intel probably still has slightly better caches that may be responsible for the apparent higher IPC that isn't explained by higher clocks.

August 10, 2017 | 04:04 PM - Posted by Oren (not verified)

I know you are busy, especially with the VEGA launch in a few days. But I hope you could do something for your readers. At some point soon, can you test ThreadRipper vs Ryzen?I (and perhaps many others) who are on the fence regarding Threadripper really want to know the real world difference the Threadripper brings vs Ryzen.

I wonder how much a difference running crossfire GPUs in full x16/x16 mode with QUAD channel memory really compares to running the same GPUs in x8/x8 mode with DUAL channel memory. You could set up a test where an 1800X competes with a Threadripper where only 8 cores are active. Same amount of RAM. See what real world differences the architecture brings in that tight of a scenario.

Good work on this review.

August 10, 2017 | 04:36 PM - Posted by skysaberx8x

I'm very curious on how will the two dies and memory modes affect virtualization? I've only experimented with VM in the past but is it possible to run two Hexa-cores windows VM and with each individual memory nodes assigned to each VM?

August 10, 2017 | 05:29 PM - Posted by SerinJ (not verified)

Are you setting the Blender tile sizes to 256 or 16/32?
Just wondering since an overclocked 5960x gets 1 minute 30 seconds on the BMW at 16x16 tile size. Significant difference that shouldn't just be a result of the OC.
For reference: 256 or 512 are for GPU and 16 or 32 are for CPU - at least for getting the best and generally more comparable results to what we get over at BlenderArtists.

August 10, 2017 | 05:30 PM - Posted by dan the grammar man (not verified)

When reading is not enough, the mistakes are OVER 9000!

"If you content creation is your livelihood or your passion, "

" as consumers in this space are often will to pay more"

" Anyone itching to speed some coin"

" flagship status will be impressed by what the purchase."

" but allows for the same connectivity support that the higher priced CPUs."


August 11, 2017 | 10:28 AM - Posted by Ryan Shrout

Now just point me to the pages... ;)

August 10, 2017 | 06:42 PM - Posted by Your Name (not verified)

Nice to see a review with more than a bunch of games tested. Keep up the good work!

August 10, 2017 | 06:49 PM - Posted by kenjo

Should not a test like 7-zip use 32 threads as max since that is what is presented to the OS??

now it only uses 50% of the threads on TR but 80% on i9-7900x.

August 10, 2017 | 09:21 PM - Posted by #650cores (not verified)

Silly performance, looking forward to the 1900X and maybe 1900.

August 11, 2017 | 03:50 AM - Posted by mat9v

I sometimes wonder why nobody ever points out that within CCX (4 cores that can allow a lot of games to run comfortably) ZEN has latencies of half those of Intel CPUs. Binding a game to those 4 cores (8 threads like any i7) has significant impact on performance. It does not change memory latencies of course but core to core is much better.

August 11, 2017 | 11:25 AM - Posted by Anonymous28 (not verified)

I'm glad someone else noticed this besides myself. I noted this during the Ryzen launch & quickly noted that by using CPU affinity along w\ CPU priority to force my games to run exclusively within 1 CCX & take advantage of using high CPU processing time on these same CPU cores I could take advantage of this up to a point.

What all this shows to me is that the OS & game developers software need to be revised to better handle this architecture at the core logic level instead of users\AMD having to provide\use methods to try to do this that cannot be used in a more dynamic fashion. I've ran some testing on Win 10's Game Mode & discovered that MS is actually trying to use CPU affinity to dynamically set running game threads to be run on the fastest\lowest latency CPU cores to "optimize" game output thru the CPU but it still tends to cross the CPU CCX's at times if left on it's own.

What I've found is by doing this my games run much smoother w\ a lot less variance which gives the "feel" of games running faster (actual FPS is the same) due to lower input lag & much better GPU frametime variance graph lines w\ very few spikes....essentially a fairly flat GPU frametime variance line which is what you want to achieve performance-wise.

Just to box is running an AMD Ryzen 7 1800X CPU\Sapphire R9 Fury X graphics card w\ no OC's applied to either the CPU or GPU.

It's a step in the right direction but needs more refinement at the OS level......

August 11, 2017 | 12:06 PM - Posted by Thatman007

As expected, performance per dollar is crap in single threaded tasks, which most workloads are. Games don't even use more than 1 or 2 cores.

August 12, 2017 | 10:47 AM - Posted by ID10T (not verified)

Yea games only use 2 cores lol

August 20, 2017 | 05:59 PM - Posted by LG (not verified)

And "as expected", we have yet another Intel shill complaining about gaming performance on a production CPU, which isn't made for gaming (although it's not bad in the least and has a longer future as devs code for more than Intel's tiny core count (under $1000))..

-"performance per dollar is crap in single threaded workloads"...
Well, since these aren't sold as a single or dual core CPU, performance per dollar as a unit is beyond everything on Intel's menu.

- "Games don't even use more than 1 or 2 cores"
Well, I've been using a FX-8350 for 2 years now, and I always see all 8 cores loaded up on every single game I play (and I have many). Windows 10 makes use of these cores even when it's not coded in programs. It would work even better if devs started coding for at least 8 cores, and I believe they will start doing this in earnest now that 8-core CPUs are now considered average core counts (unless you're with Intel).

You would have been better off stating that core vs core is in Intel's favor on the 4-core chips and some others, but ironically the "performance per dollar", as you mention is superior with AMD.. in every way.

August 12, 2017 | 06:28 AM - Posted by Anonymous37 (not verified)

What memory are you using, and could you name a 64GB kit that works in XMP? And why 3200Mhz over 3600?

August 16, 2017 | 12:09 AM - Posted by Anonymousdfdf3 (not verified)

Intel is still superior both in raw performance and in perf/$. If you were being objective you wouldn't have given slapped an editor's choice on this inferior product.

August 20, 2017 | 03:24 PM - Posted by Rotorheadman (not verified)

In Handbrake the 1800x is 40% slower than the 1950x and in reverse the 1950x is 67% faster than 1800x.

August 20, 2017 | 06:09 PM - Posted by LG (not verified)

Open cinebench with a TR or even an 1800x. Show me any Intel chip that can come within 20% of the 1950x. The entire Ryzen 7 lineup is king of the "perf/$" category. 1800x = $365 on eBay right now. Look how close it matches with Intel products that are double the price or worse.

If you want to compare single core perf vs Intel, you can win an argument.. at the cost of very high power draw and even worse cash draw. Perf/$ is a dead argument for any Intel fanboy. Find something else. BTW, are you also commenting under "Thatman007" or something? Sound like the same Intel mouthpiece.

January 10, 2018 | 05:03 PM - Posted by IntelOutside (not verified)

Sorry for necroposting, but it really belongs here:

The recent Meltdown vulnerability and its performance implications on Intel CPUs pretty much leveled the playground now. After reading the article and all the comments above I opted for a very good B350 motherboard and a Ryzen 1800X to replace my Core i7 5930K (Haswell). Reason is that my CPU will likely be hit very badly performance wise by the upcoming Windows 10 security update. Intel should pay back 30% to all affected CPU owners, actually...

Reason is that likely I would not gain anything from NUMA, except of the additional complications. So I opt for the easier to manager (lower) power consumption and less noise from cooling as a result.

Thank you for collecting all the great info.

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