Lower Power, Same Performance
AMD is in a strange position in that there is a lot of excitement about their upcoming Zen architecture, but we are still many months away from that introduction. AMD obviously needs to keep the dollars flowing in, and part of that means that we get refreshes now and then of current products. The “Kaveri” products that have been powering the latest APUs from AMD have received one of those refreshes. AMD has done some redesigning of the chip and tweaked the process technology used to manufacture them. The resulting product is the “Godavari” refresh that offers slightly higher clockspeeds as well as better overall power efficiency as compared to the previous “Kaveri” products.
One of the first refreshes was the A8-7670K that hit the ground in November of 2015. This is a slightly cut down part that features 6 GPU compute units vs. the 8 that a fully enabled Godavari chip has. This continues to be a FM2+ based chip with a 95 watt TDP. The clockspeed of this part goes from 3.6 GHz to 3.9 GHz. The GPU portion runs at the same 757 MHz that the original A10-7850K ran at. It is interesting to note that it is still a 95 watt TDP part with essentially the same clockspeeds as the 7850K, but with two fewer GPU compute units.
The other product being covered here is a bit more interesting. The A10-7860K looks to be a larger improvement from the previous 7850K in terms of power and performance. It shares the same CPU clockspeed range as the 7850K (3.6 GHz to 3.9 GHz), but improves upon the GPU clockspeed by hitting around 800 MHz. At first this seems underwhelming until we realize that AMD has lowered the TDP from 95 watts down to 65 watts. Less power consumed and less heat produced for the same performance from the CPU side and improved performance from the GPU seems like a nice advance.
AMD continues to utilize GLOBALFOUNDRIES 28 nm Bulk/HKMG process for their latest APUs and will continue to do so until Zen is released late this year. This is not the same 28 nm process that we were introduced to over four years ago. Over that time improvements have been made to improve yields and bins, as well as optimize power and clockspeed. GF also can adjust the process on a per batch basis to improve certain aspects of a design (higher speed, more leakage, lower power, etc.). They cannot produce miracles though. Do not expect 22 nm FinFET performance or density with these latest AMD products. Those kinds of improvements will show up with Samsung/GF’s 14nm LPP and TSMC’s 16nm FF+ lines. While AMD will be introducing GPUs on 14nm LPP this summer, the Zen launch in late 2016 will be the first AMD CPU to utilize that advanced process.
Clockspeed Jump and More!
On March 1st AMD announced the availability of two new processors as well as more information on the A10 7860 APU.
The two new units are the A10-7890K and the Athlon X4 880K. These are both Kaveri based parts, but of course the Athlon has the GPU portion disabled. Product refreshes for the past several years have followed a far different schedule than the days of yore. Remember back in time when the Phenom II series and the competing Core 2 series would have clockspeed updates that were expected yearly, if not every half year with a slightly faster top end performer to garner top dollar from consumers?
Things have changed, for better or worse. We have so far seen two clockspeed bumps for the Kaveri /Godavari based APU. Kaveri was first introduced over two years ago with the A10-7850K and the lower end derivatives. The 7850K has a clockspeed that ranges from 3.7 GHz to the max 4 GHz with boost. The GPU portion is clocked at 720 MHz. This is a 95 watt TDP part that is one of the introductory units from GLOBALFOUNDRIES 28 nm HKMG process.
Today the new top end A10-7890K is clocked at 4.1 GHz to 4.3 GHz max. The GPU receives a significant boost in performance with a clockspeed of 866 MHz. The combination of CPU and GPU clockspeed increases push the total performance of the part exceeding 1 TFLOPs. It features the same dual module/quad core Godavari design as well as the 8 GCN Units. The interesting part here is that the APU does not exceed the 95 watt TDP that it shares with the older and slower 7850K. It is also a boost in performance from last year’s refresh of the A10-7870K which is clocked 200 MHz slower on the CPU portion but retains the 866 MHz speed of the GPU. This APU is fully unlocked so a user can easily overclock both the CPU and GPU cores.
The Athlon X4 880K is still based on the Godavari family rather than the Carizzo update that the X4 845 uses. This part is clocked from 4.0 to 4.2 GHz. It again retains the 95 watt TDP rating of the previous Athlon X4 CPUs. Previously the X4 860K was the highest clocked unit at 3.7 GHz to 4.0, but the 880K raises that to 4 to 4.2 GHz. A 300 MHz gain in base clock is pretty significant as well as stretching that ceiling to 4.2 GHz. The Godavari modules retain their full amount of L2 cache so the 880K has 4 MB available to it. These parts are very popular with budget enthusiasts and gaming builds as they are extremely inexpensive and perform at an acceptable level with free overclocking thrown in.
Subject: Processors | February 24, 2015 - 11:18 PM | Jeremy Hellstrom
Tagged: Puma+, Puma, Kaveri, ISSCC 2015, ISSCC, GCN, Excavator, Carrizo-L, carrizo, APU, amd
While it is utterly inconceivable that Josh might have missed something in his look at Carrizo, that hasn't stopped certain Canadians from talking about Gila County, Arizona. AMD's upcoming processor launch is a little more interesting than just another Phenom II launch, especially for those worried about power consumption. With Adaptive Voltage and Frequency Scaling the new Excavator based chips will run very well at the sub-15W per core pair range which is perfect for POS, airplane entertainment and even in casinos. The GPU portion speaks to those usage scenarios though you can't expect an R9 295 at that wattage. Check out Hardware Canucks' coverage right here.
"AMD has been working hard on their mobile Carrizo architecture and they're now releasing some details about these Excavator architecture-equipped next generation APUs."
Here are some more Processor articles from around the web:
- AMD's new Carrizo: The x86 notebook processor that thinks it's a GPU @ The Register
- AMD Carrizo APU Details Revealed @ TechARP
- AMD FX-8320E Performance On Linux @ Phoronix
- Intel Broadwell HD Graphics 5500: Windows 8.1 vs. Linux @ Phoronix
- Preliminary Tests Of Intel Sandy Bridge & Ivy Bridge vs. Broadwell @ Phoronix
AMD Details Carrizo Further
Some months back AMD introduced us to their “Carrizo” product. Details were slim, but we learned that this would be another 28 nm part that has improved power efficiency over its predecessor. It would be based on the new “Excavator” core that will be the final implementation of the Bulldozer architecture. The graphics will be based on the latest iteration of the GCN architecture as well. Carrizo would be a true SOC in that it integrates the southbridge controller. The final piece of information that we received was that it would be interchangeable with the Carrizo-L SOC, which is a extremely low power APU based on the Puma+ cores.
A few months later we were invited by AMD to their CES meeting rooms to see early Carrizo samples in action. These products were running a variety of applications very smoothly, but we were not informed of speeds and actual power draw. All that we knew is that Carrizo was working and able to run pretty significant workloads like high quality 4K video playback. Details were yet again very scarce other than the expected timeline of release, the TDP ratings of these future parts, and how it was going to be a significant jump in energy efficiency over the previous Kaveri based APUs.
AMD is presenting more information on Carrizo at the ISSCC 2015 conference. This information dives a little deeper into how AMD has made the APU smaller, more power efficient, and faster overall than the previous 15 watt to 35 watt APUs based on Kaveri. AMD claims that they have a product that will increase power efficiency in a way not ever seen before for the company. This is particularly important considering that Carrizo is still a 28 nm product.
Subject: Motherboards | February 12, 2015 - 08:01 PM | Jeremy Hellstrom
Tagged: motherboard, Kaveri, Intel Gig-E, FM2+, DDR-3 2133, crossblade ranger, audio, asus, A88X
It has been a while since Josh reviewed the ASUS Crossblade Ranger so it seems appropriate to put up a reminder that there are some impressive AMD boards out there with The Tech Report's review of the board. This board has just about everything except an M.2 port, from the Asus SupremeFX 2014 with high end caps and EMI shielding to HDMI, DVI, and VGA display outputs to a BIOS button on the backplate which allows you to update the upgrade the motherboard's firmware without a CPU or RAM installed. Check out the full review to get a list of the other features as well as a glimpse into the personality traits the board displayed during testing.
"Asus' Crossblade Ranger is a tweaker-friendly, top-of-the-line motherboard for AMD's Socket FM2+ processors. We kicked the tires and turned up the clocks to see whether the Ranger lives up to its top billing."
Here are some more Motherboard articles from around the web:
- ASUS Rampage V Extreme Review @ OCC
- ASRock X99 OC Formula @ HardwareHeaven
- ASRock Fatal1ty X99M Killer mATX @ Kitguru
- ASRock X99X Killer @ HardwareHeaven
- ASUS X99-PRO Haswell-E Motherboard Review @ Hardware Canucks
- MSI's X99S MPower @ The Tech Report
Subject: Processors | January 29, 2015 - 03:41 PM | Sebastian Peak
Tagged: rumor, processors, Kaveri, Godavari, cpu, Athlon X4, APU, amd
VR-Zone has published a report with a detailed slide showing upcoming AMD Godavari processors, and the updated lineup includes 12 new models.
The release schedule indicates a spring availability for most of the new APUs, with the Athlon X4 850 and 870K shipping in May. The APU line gets a new flagship desktop part with the A10-8850K, and this appears to be a higher-clocked version of the A10-7850K, with a 100MHz higher boost clock (4.1 GHz vs. 4.0 GHz) and a higher GPU clock of 856 MHz (vs. 720 MHz).
Of particular interest for the potential budget quad-core buyer is the Athlon X4 870K, a new 95W part which would presumably replace the X4 860K - a processor that has seen inconsistent availability (and is currently unavailable on Newegg). With more games being released that require a quad-core to run, these sub-$100 Athlon CPUs present a great value in constructing a low-cost gaming system these days.
The slide does not indicate a change in the 28nm process from Kaveri, and it should be safe to assume these will not represent a significant architectural change. The modest clock increases from Kaveri will result in some performance gains, and this is good for consumers assuming these will sell at the same price points as the outgoing models.
A Step Up for FM2+
I have been impressed by the Asus ROG boards for quite a few years now. I believe my first encounter was with the Crosshair IV Formula, followed by the CH IV Extreme with that crazy Lucidlogix controller. These were really outstanding boards at the time, even if one was completely overkill (and not terribly useful for multi-GPU via Lucidlogix). Build quality, component selections, stability, and top notch features have defined these ROG products. The Intel side is just as good, if not better, in that they have a wider selection of boards under the ROG flag.
Asus has had a fairly large hole in their offerings that had not been addressed until fairly recently. The latest AMD APUs based on FM1, FM2, and FM2+ did not have their own ROG member. This was fixed in late summer of this year. Asus released the interestingly named Crossblade Ranger FM2+ motherboard for the AMD APU market.
FM2+ motherboards are, as a rule, fairly inexpensive products. The FM2+ infrastructure does not have to support processors with the 219 watt TDPs that AM3+ does, instead all of the FM2+ based products are 100 watts TDP and below. There are many examples of barebones motherboards for FM2+ that are $80 and less. We have a smattering of higher end motherboards from guys like Gigabyte and MSI, but these are hitting max prices of $110 to $120 US. Asus is offering users in the FM2+ market something a little different from the rest. Users who purchase an AMD APU will be getting much the same overall experience that the top end Intel based ROG customers if they decide to buy the Crossblade Ranger, but for a much lower price.
The bundle is functional, but not overly impressive.
Subject: Processors | November 20, 2014 - 06:31 PM | Josh Walrath
Tagged: amd, APU, carrizo, Carrizo-L, Kaveri, Excavator, Steamroller, SoC, Intel, mobile
AMD has certainly gone about doing things in a slightly different manner than we are used to. Today they announced their two latest APUs which will begin shipping in the first half of 2015. These APUs are running at AMD and are being validated as we speak. AMD did not release many details on these products, but what we do know is pretty interesting.
Carrizo is based on the latest iteration of AMD’s CPU technology. Excavator is the codename for these latest CPU cores, and they promise to be smaller and more efficient than the previous Steamroller core which powers the latest Kaveri based APUs. Carrizo-L is the lower power variant which will be based on the Puma+ core. The current Beema APU is based on the Puma architecture.
Roadmaps show that the Carrizo APUs will be 28 nm products, presumably fabricated by GLOBALFOUNDRIES. Many were hoping that AMD would make the jump to 20 nm with this generation of products, but that does not seem to be the case. This is not surprising due to the limitations of that particular process when dealing with large designs that require a lot of current. AMD will likely be pushing for 16 nm FinFET for the generation of products after Carrizo.
The big Carrizo supposedly has a next generation GCN unit. My guess here is that it will use the same design as we saw with the R9 285. That particular product is a next generation unit that has improved efficiency. AMD did not release how many GCN cores will be present in Carizzo, but it will be very similar to what we see now with Kaveri. Carrizo-L will use the same GCN units as the previous generation Beema based products.
I believe AMD has spent a lot more time hand tuning Excavator instead of relying on a lot of automated place and route. This should allow them to retain much of the performance of the part, all the while cutting down on transistor count dramatically. Some rumors that I have seen point to each Excavator module being 40% smaller than Steamroller. I am not entirely sure they have achieved that type of improvement, but more hand layout does typically mean greater efficiency and less waste. The downside to hand layout is that it is extremely time and manpower intensive. Intel can afford this type of design while AMD has to rely more on automated place and route.
Carrizo will be the first HSA 1.0 compliant SOC. It is in fact an SOC as it integrates the southbridge functions that previously had been handled by external chips like the A88X that supports the current Kaveri desktop APUs. Carrizo and Carrizo-L will also share the same infrastructure. This means that motherboards that these APUs will be soldered onto are interchangeable. One motherboard from the partner OEMs will be able to address multiple markets that will see products range from 4 watts TDP up to 35 watts.
Finally, both APUs feature the security processor that allows them access to the ARM TrustZone technology. This is a very small ARM processor that handles the secure boot partition and handles the security requests. This puts AMD on par with Intel and their secure computing solution (vPro).
These products will be aimed only at the mobile market. So far AMD has not announced Carrizo for the desktop market, but when they do I would imagine that they will hit a max TDP of around 65 watts. AMD claims that Carrizo is one of the biggest jumps for them in terms of power efficiency. A lot of different pieces of technology have all come together with this product to make them more competitive with Intel and their process advantage. Time will tell if this is the case, but for now AMD is staying relevant and pushing their product releases so that they are more consistently ontime.
Subject: General Tech | October 23, 2014 - 05:56 PM | Ken Addison
Tagged: video, podcast, GTX 980M, msi, X99S GAMING 9 AC, amd, nvidia, Intel, Kingwin, APU, Kaveri, 344.48, dsr
PC Perspective Podcast #323 - 10/23/2014
Join us this week as we discuss GTX 980M Performance, MSI X99S Gaming 9 AC and more!
The URL for the podcast is: http://pcper.com/podcast - Share with your friends!
- iTunes - Subscribe to the podcast directly through the Store
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- MP3 - Direct download link to the MP3 file
Hosts: Ryan Shrout, Jeremy Hellstrom, Josh Walrath, and Allyn Malventano
Program length: 1:18:59
Subject: Processors | October 23, 2014 - 02:02 AM | Josh Walrath
Tagged: Richland, Q3 results, lisa su, Kaveri, APU, amd, A10 7850K
While AMD made a small profit last quarter, the Q4 outlook from the company is not nearly as rosy. AMD estimates that Q4 revenues will be around 12% lower than Q3, making for a rare drop in what is typically a robust season for sales. Unlike Intel, AMD is seeing a very soft PC market for their products. Intel so far has been able to deliver parts that are as fast, if not faster than the latest APUs, but they also feature lower TDPs while at a comparable price. The one area that AMD has a significant advantage is in terms of 3D performance and better driver support.
To keep the chips selling during this very important quarter, AMD is cutting the prices on their entire lineup of FM2+ parts. This includes the entire Kaveri based lineup from the top end A10-7850K to the A6-7400K. AMD is also cutting the prices on the previous Richland based parts, which include the A10-6800K. Also of interest is that buyers of A10 APUs will be able to select one of three game titles (Murdered: Soul Suspect, Thief, or Sniper Elite 3) for free, or use the included code to purchase Corel’s Aftershot Pro 2 for only $5.
|Compute Cores||12 (4+8)||12 (4+8)||10 (4+6)||10 (4+6)||6 (2+4)|
|TDP (cTDP)||95 (65/45)||65 (45)||95 (65/45)||65 (45)||65 (45)|
The A10-7850K is a pretty good part overall, though of course it does suffer at the hands of Intel when it comes to pure CPU performance. It still is a pretty quick part that competes well with Intel’s 2 core/4 thread chips. 3D performance from the integrated graphics is class leading, and the potential for using that unit for HSA applications is another checkmark for AMD. We have yet to see widespread adoption of HSA, but we are seeing more and more software products coming out that support it. Having tested it out myself, the GPU portion of the APU can be enabled when using a standalone GPU from either AMD or NVIDIA. The Kaveri chips also support TrueAudio, which will show up in more titles throughout the next year.
One aspect of AMD’s latest FM2+ platform that cannot be ignored is the pretty robust selection of good and interesting motherboards that are offered at very low prices. Products such as the Gigabyte G1.Sniper.A88X and the MSI A88X-G45 Gaming motherboards are well rounded products that typically sell in the $90 to $110 range. Top end products like the Asus Crossblade Ranger are still quite affordable at around $160. Budget offerings are still pretty decent and they come in the $50 range.
One other product that has sparked interest is the Athlon X4 860K Black Edition. This product is clocked between 3.7 GHz and 4.0 GHz, features two Steamroller modules, and is priced at a very reasonable $90. The downside is that there is no GPU portion enabled, while the upside is that there is potentially more thermal headroom for the CPU portion to be clocked higher than previous A10-7850K parts. This will of course differ from individual chips, but the potential is there to have a pretty solid CPU for a very low price. Add in the low motherboard prices, and this has the making of a nice budget enthusiast system.
So why the cuts now? We can simply look at last week’s results for AMD’s previous quarter, as well as how the next quarter is stacking up. While AMD made a small profit last quarter, predictions for Q4 look grim. AMD is looking at around a 12% decrease in revenue, as stated above. AMD has a choice in that they can keep ASPs higher, but risk shipping less product in the very important 4th quarter; or they can sacrifice ASPs and potentially ship a lot more product. The end result of cutting the prices on their entire line of APUs will be of course lower ASPs, but a higher volume of parts being shipped and sold. In terms of cash flow, it is likely more important to see parts flowing rather than having higher inventories with a higher ASP. This also means that more APUs being sold will mean more motherboards from their partners moving through the channel.
Intel does have several huge advantages over AMD in that they have a very solid 22 nm process, a huge workforce that can hand tune their processors, and enough marketing money to make any company other than Apple squirm. AMD is at the mercy of the pure-play foundries in terms of process node tweaks and shrinks. AMD spent a long time at 32 nm PD-SOI before it was able to migrated to 28 nm HKMG. It looks to be 2015 before AMD sees anything below 28 nm for their desktop APUs, but it could be sooner for their smaller APUs and ARM based products on planar 20 nm HKMG processes. We don’t know a all of the specifics of the upcoming 16/14nm FinFET products from TSMC, Samsung, and GLOBALFOUNDRIES, so it will be hard to compare/contrast to Intel’s 2nd generation 14 nm TriGate line. All we know is that it will most assuredly be better than the current 28 nm HKMG that AMD is stuck at.