Intel Core i9-7980XE Pushed to 6.1 GHz On All Cores Using Liquid Nitrogen

Subject: Processors | September 25, 2017 - 09:36 PM |
Tagged: skylake-x, overclocking, Intel Skylake-X, Intel, Cinebench, 7980xe, 3dmark, 14nm

Renowned overclocker der8auer got his hands on the new 18-core Intel Core i9-7980XE and managed to break a few records with more than a bit of LN2 and thermal paste. Following a delid, der8auer slathered the bare die and surrounding PCB with a polymer-based (Kryonaut) TIM and reattached the HIS to prepare for the extreme overclock. He even attempted to mill out the middle of the IHS to achieve a balance between direct die cooling and using the IHS to prevent bending the PCB and spread out the pressure from the LN2 cooler block, but ran into inconsistent results between runs and opted not to proceed with that method.

Core i9-7980xe LN2 overclock.png

Using an Asus Rampage VI Apex X299 motherboard and the Core i9-7980XE at an Asus ROG event in Taiwan der8auer used liquid nitrogen to push all eighteen cores (plus Hyper-Threading) to 6.1 GHz for a CPU-Z validation. To get those clockspeeds he needed to crank up the voltage to 1.55V (1.8V VCCIN) which is a lot for the 14nm Skylake X processor. Der8auer noted that overclocking was temperature limited beyond this point as at 6.1 GHz he was seeing positive temperatures on the CPU cores despite the surface of the LN2 block being as low as -100 °C! Perhaps even more incredible is the power draw of the processor as it runs at these clockspeeds with the system drawing as much as 1,000 watts (~83 amps) on the +12V rail with the CPU being responsible for almost all of that number! That is a lot of power running through the motherboard VRMs and the on-processor FIVR!

For comparison, at 5.5 GHz he measured 70 amps on the +12V rail (840W) with the chip using 1.45V vcore under load.

7980xe CPU-Z overclock 6GHz.png

For Cinebench R15, the extreme overclocker opted for a tamer 5.7 GHz where the i9-7980XE achieved a multithreaded score of 5,635 points. He compared that to his AMD Threadripper overclock of 5.4 GHz where he achieved a Cinebench score of 4,514 (granted the Intel part was using four more threads and clocked higher).

To push things (especially his power supply heh) further, the overclocker added a LN2 cooled NVIDIA Titan Xp to the mix and managed to overclock the graphics card to 2455 MHz at 1.4V. With the 3840 Pascal cores at 2.455 GHz he managed to break three single card world records by scoring 45,705 in 3DMark 11, 35,782 in 3DMark Fire Strike, and 120,425 in 3DMark Vantage!

Der8auer also made a couple interesting statements regarding overclocking at these levels including the issues of cold bugs not allowing the CPU and/or GPU to boot up if the cooler plate is too cold. On the other side of things, once the chip is running the power consumption can jump drastically with more voltage and higher clocks such that even LN2 can’t maintain sub-zero core temperatures! The massive temperature delta can also create condensation issues that need to be dealt with. He mentions that while for 24/7 overclocking liquid metal TIMs are popular choices, when extreme overclocking the alloy actually works against them because the sub-zero temperatures reduce the effectiveness and thermal conductivity of the interface material which is why polymer-based TIMs are used when cooling with liquid nitrogen, liquid helium, or TECs. Also, while most people apply a thin layer of thermal paste to the direct die or HIS, when extreme overclocking he “drowns” the processor die and PCB in the TIM to get as much contact as possible with the cooler as every bit of heat transfer helps even the small amount he can transfer through the PCB. Further, FIVR has advantages such as per-core voltage fine tuning, but it also can hold back further overclocking from cold bugs that will see the processor shut down past -100 to -110 °C temperature limiting overclocks whereas with an external VRM setup they could possibly push the processor further.

For the full scoop, check out his overclocking video. Interesting stuff!

Also read:

Source: der8auer

Overclockers Push Ryzen 7 1800X to 5.2 GHz On LN2, Break Cinebench Record

Subject: Processors | February 28, 2017 - 09:06 PM |
Tagged: Zen, Ryzen 1800X, ryzen, overclocking, LN2, Cinebench, amd

During AMD’s Ryzen launch event a team of professional overclockers took the stage to see just how far they could push the top Zen-based processor. Using a bit of LN2 (liquid nitrogen) and a lot of voltage, the overclocking team was able to hit an impressive 5.20 GHz with all eight cores (16 threads) enabled!

Ryzen Cinebench Benchmark Record.png

In addition to the exotic LN2 cooling, the Ryzen 7 1800X needed 1.875 volts to hit 5.20 GHz. That 5.20 GHz was achieved by setting the base clock at 137.78 MHz and the multiplier at 37.75. Using these settings, the chip was even stable enough to benchmark with a score of 2,363 on Cinebench R15’s multi-threaded test.

According to information from AMD, a stock Ryzen 7 1800X comes clocked at 3.6 GHz base and up to 4 GHz boost (XFR can go higher depending on HSF) and is able to score 1,619 in Cinebench. The 30% overclock to 5.20 GHz got the overclockers an approximately 45% higher CInebench score.

Further, later in the overclocking event, they managed to break a Cinebench world record of 2,445 points by achieving a score of 2,449 (it is not clear what clockspeed this was at). Not bad for a brand-new processor!

AMD Ryzen 1800X Overclocked On LN2 to 5GHz.jpg

The overclocking results are certainly impressive, and suggest that Ryzen may be a decent overclocker so long as you have the cooling setup to get it there (the amount of voltage needed is a bit worrying though heh). Interestingly, HWBot shows a Core i7 6900K (also 8C/16T) hitting 5.22 GHz and scoring 2,146 in CInebench R15. That Ryzen can hit similar numbers with all cores and threads turned on is promising.

I am looking forward to seeing what people are able to hit on air and water cooling and if XFR will work as intended and get most of the way to a manual overclock without the effort of manually overclocking. I am also curious how the power phases and overclocking performance will stack up on motherboards using the B350 versus X370 chipsets. With the eight core chips able to hit 5.2, I expect the upcoming six core Ryzen 5 and four core Ryzen 3 processors to clock even higher which would certainly help gaming performance for budget builds!

Austin Evans was able to get video of the overclocking event which you can watch here (Vimeo).

Also read:

Source: Hexus

AMD Ryzen Pre-order Starts Today, Specs and Performance Revealed

Subject: Processors | February 22, 2017 - 09:00 AM |
Tagged: Zen, ryzen, preorder, pre-order, handbrake, Cinebench, amd

I know that many of you have been waiting months and years to put your money down for the Zen architecture and Ryzen processors from AMD. Well that day is finally here: AMD is opening pre-orders for Ryzen 7 1800X, Ryzen 7 1700X and Ryzen 7 1700 processors.

That’s the good news. The bad news? You’ll be doing it without the guidance of independent reviews.

For some of you, that won’t matter. And I can respect that! Getting your hands on Ryzen and supporting the disruption that it offers is something not only AMD fans have been preparing for, but tens of thousands of un-upgraded enthusiasts as well.

slides1wm.jpg

Sorry...AMD doesn't trust with slides it seems.

Proudly announced at our meeting with AMD this week, Zen not only met the 40% IPC goals it announced more than a year ago, but exceeded it! AMD claims more than a 52% increase in instructions per clock over Excavator and that is a conservative metric based on side conversations. This does a couple of things for the CPU market immediately: first it resets performance expectations for what Ryzen will offer when reviews do go live and second, it may actually put some worry into Intel.

AMD is allowing us to share baseline specifications of the processors, including clock speeds and core counts, as well as some selected benchmarks that show the Ryzen CPUs in an (obviously) favorable light.

  Ryzen R7 1800X Ryzen R7 1700X Ryzen R7 1700 Core i7-6900K Core i7-6800K Core i7-7700K
Architecture Zen Zen Zen Broadwell-E Broadwell-E Kaby Lake
Process Tech 14nm 14nm 14nm 14nm 14nm 14nm+
Cores/Threads 8/16 8/16 8/16 8/16 6/12 4/8
Base Clock 3.6 GHz 3.4 GHz 3.0 GHz 3.2 GHz 3.4 GHz 4.2 GHz
Turbo/Boost Clock 4.0 GHz 3.8  GHz 3.7 GHz 3.7 GHz 3.6 GHz 4.5 GHz
Cache 20MB 20MB 20MB 20MB 15MB 8MB
TDP 95 watts 95 watts 65 watts 140 watts 140 watts 91 watts
Price $499 $399 $329 $1050 $450 $350

AMD is being extremely aggressive with these prices and with the direct comparisons. The flagship Ryzen 7 1800X will run you just $499, the 1700X at $399 and the 1700 at $329. For AMD’s own comparisons, they pitted the Ryzen 7 1800X against the Core i7-6900K from Intel, selling for more than 2x the cost. Both CPUs have 8 cores and 16 threads, the AMD Ryzen part has higher clock speeds as well. If IPC is equivalent (or close), then it makes sense that the 1800X would be a noticeably faster part. If you care about performance per dollar even more…you should be impressed.

For the other comparisons, AMD is pitting the Ryzen 7 1700X with 8 cores and 16 threads against the Core i7-6800K, with 6 cores and 12 threads. Finally, the Ryzen 7 1700, still with an 8C/16T setup, goes against the Core i7-7700K with just 4 cores and 8 threads.

Here is a summary of the performance comparisons AMD is allowing to be showed.

perf1-wm.jpg

perf2-wm.jpg

Though it's only a couple of benchmarks, and the results are highly siloed to show Ryzen in the best light, the results are incredibly impressive. In Cinebench R15, the Ryzen 1800X is 9% faster than the Core i7-6900K but at half the price; even the Ryzen R7 1700X is beating it. The 1700X is 34% faster than the Core i7-6800K, and the 1700 is 31% faster than the quad-core Core i7-7700K. The only single threaded result AMD gave us shows matching performance from the Core i7-6900K based on the Intel Broadwell architecture and the new Ryzen R7 1800X. This might suppress some questions about single threaded performance of Ryzen before reviews, but Broadwell is a couple generations old in Intel’s lineup, so we should expect Kaby Lake to surpass it.

The Handbrake benchmark results only included Core i7-7700K and the Ryzen R7 1700, with the huge advantage going to AMD. Not unexpected considering the 2x delta in core and thread count.

perf3-wm.jpg

Finally, the performance per dollar conversion on the Cinebench scores is a substantially impactful visual. With a more than 2x improvement from the Ryzen 7 1800X to the Core i7-6900K, power-hungry users on a budget will have a lot to think about.

slides2wm.jpg

Sorry...AMD doesn't trust with slides it seems.

Clearly, AMD is very proud of the Ryzen processor and the Zen architecture, and they should be. This is a giant leap forward for the company compared to previous desktop parts. If you want to buy in today and pre-order, we have links below. If you’d rather wait for a full review from PC Perspective (or other outlets), you only have to wait until March 2nd.

Update Feb 22 @ 4:27am: An official Intel spokesman did respond to today's AMD news with the following: 

“We take any competition seriously but as we’ve learned, consumers usually take a ‘wait and see’ approach on performance claims for untested products. 7th Gen Intel® Core™ delivers the best experiences, and with 8th Gen Intel Core and new technologies like Intel® Optane™ memory coming soon, Intel will not stop raising the bar.” ­

While nothing drastic, the Intel comment is interesting in a couple of ways. First, the fact that Intel is responding at all means that they are rattled to some degree. Second, mention of the 8th Gen Core processor series indicates that they want potential buyers to know that something beyond Kaby Lake is coming down the pipe, a break from Intel's normally stoic demeanor.

Source: AMD

Report: Leaked AMD Ryzen 7 1700X Benchmarks Show Strong Performance

Subject: Processors | February 21, 2017 - 10:54 AM |
Tagged: ryzen, rumor, report, R7, processor, leak, IPC, cpu, Cinebench, benchmark, amd, 1700X

VideoCardz.com, continuing their CPU coverage of the upcoming Ryzen launch, has posted images from XFASTEST depicting the R7 1700X processor and some very promising benchmark screenshots.

AMD-Ryzen-7-1700X.jpg

(Ryzen 7 1700X on the right) Image credit XFASTEST via VideoCardz

The Ryzen 7 1700X is reportedly an 8-core/16-thread processor with a base clock speed of 3.40 GHz, and while overall performance from the leaked benchmarks looks very impressive, it is the single-threaded score from the Cinebench R15 run pictured which really makes this CPU look like major competition for Intel with IPC.

AMD-Ryzen-7-1700X-Cinebench.jpg

Image credit XFASTEST via VideoCardz

An overall score of 1537 is outstanding, placing the CPU almost even with the i7-6900K at 1547 based on results from AnandTech:

AnandTech_Benchmarks.png

Image credit AnandTech

And the single-threaded performance score of the reported Ryzen 7 1700X is 154, which places it above the i7-6900K's score of 153. (It is worth noting that Cinebench R15 shows a clock speed of 3.40 GHz for this CPU, which is the base, while CPU-Z is displaying 3.50 GHz - likely indicating a boost clock, which can reportedly surpass 3.80 GHz with this CPU.)

Other results from the reported leak include 3DMark Fire Strike, with a physics score of 17,916 with Ryzen 7 1700X clocking in at ~3.90 GHz:

AMD-Ryzen-7-1700X-Fire-Strike-Physics.png

Image credit XFASTEST via VideoCardz

We will know soon enough where this and other Ryzen processors stand relative to Intel's current offerings, and if Intel will respond to the (rumored) price/performance double whammy of Ryzen. An i7-6900K retails for $1099 and currently sells for $1049 on Newegg.com, and the rumored pricing (taken from Wccftech), if correct, gives AMD a big win here. Competition is very, very good!

wccftech_chart.PNG

Chart credit Wccftech.com

Source: VideoCardz