Subject: Processors | November 28, 2016 - 09:26 PM | Scott Michaud
Tagged: amd, Zen, Summit Ridge
Guru3D got hold of a product list, which includes entries for AMD’s upcoming Zen architecture.
Four SKUs are thus rumored to exist:
- Zen SR3: (65W, quad-core, eight threads, ~$150 USD)
- Zen SR5: (95W, hexa-core, twelve threads, ~$250 USD)
- Zen SR7: (95W, octo-core, sixteen threads, ~$350 USD)
- Special Zen SR7: (95W, octo-core, sixteen threads, ~$500 USD)
The sheet also states that none of these are supposed to contain integrated graphics, like we see on the current FX line. There is some merit to using integrated GPUs for specific tasks, like processing video while the main GPU is busy or doing a rapid, massively parallel calculation without the latency of memory copies, but AMD is probably right to not waste resources, such as TDP, fighting our current lack of compatible software and viable use cases for these SKUs.
Image Credit: Guru3D
The sheet also contains benchmarks for Cinebench R15. While pre-rendered video is a task that really should be done on GPUs at this point, especially with permissive, strong, open-source projects like Cycles, they do provide a good example of multi-core performance that scales. In this one test, the Summit Ridge 7 CPU ($350) roughly matches the Intel Core i7-6850K ($600), again, according to this one unconfirmed benchmark. It doesn’t list clock rates, but other rumors claim that the top-end chip will be around 3.2 GHz base, 3.5 GHz boost at stock, with manual overclocks exceeding 4 GHz.
These performance figures suggest that Zen will not beat Skylake on single-threaded performance, but it might be close. That might not matter, however. CPUs, these days, are kind-of converging around a certain level of per-thread performance, and are differentiating with core count, price, and features. Unfortunately, there doesn’t seem to have been many leaks regarding enthusiast-level chipsets for Zen, so we don’t know if there will be compelling use cases yet.
Zen is expected early in 2017.
Subject: Motherboards, Processors | September 7, 2016 - 08:08 PM | Tim Verry
Tagged: Zen, Summit Ridge, Excavator, Bristol Ridge, amd, A12-9800
This week AMD officially took the wraps off of its 7th generation APU lineup that it introduced back in May. Previously known as Bristol Ridge, AMD is launching eight new processors along with a new desktop platform that finally brings next generation I/O to AMD systems.
Bristol Ridge maintains the Excavator CPU cores and GCN GPU cores of Carrizo, but on refreshed silicon with performance and power efficiency gains that will bring the architecture started by Bulldozer to an apex. These will be the last chips of that line, and wil be succeeded by AMD's new "Zen" architecture in 2017. For now though, Bristol Ridge delivers as much as 17% higher per thread CPU performance and 27% higher graphics performance while using significantly lower power than its predecessors. Further, AMD has been able to (thanks to various process tweaks that Josh talked about previously) hit some impressive clock speeds with these chips enabling AMD to better compete with Intel's Core i5 offerings.
At the top end AMD has the (65W) quad core A12-9800 running at 3.8 GHz base and 4.2 GHz boost paired with GCN 3.0-based Radeon R7 graphics (that support VP9 and HEVC acceleration). These new Bristol Ridge chips are able to take advantage of DDR4 clocked up to 2400 MHz. For DIY PC builders planning to use dedicated graphics, AMD has the non-APU Athlon X4 950 which features four CPU cores at 3.5 GHz base and 3.8 GHz boost with a 65W TDP. While it is not clocked quite as high as its APU counterpart, it should still prove to be a popular choice for budge builds and will replace the venerable Athlon X4 860 and will also be paired with an AM4 motherboard that will be ready to accept a new Zen-based "Summit Ridge" CPU next year.
The following table lists the eight new 7th generation "Bristol Ridge" processors and their specifications.
|CPU Cores||CPU Clocks Base / Boost||GPU||GPU CUs||GPU Clocks (Max)||TDP|
|4||3.8 GHz / 4.2 GHz||Radeon R7||8||1,108 MHz||65W|
|A12-9800E4||4||3.1 GHz / 3.8 GHz||Radeon R7||8||900 MHz||35W|
|A10-9700||4||3.5 GHz / 3.8 GHz||Radeon R7||6||1,029 MHz||65W|
|A10-9700E||4||3.0 GHz / 3.5 GHz||Radeon R7||6||847 MHz||35W|
|A8-9600||4||3.1 GHz / 3.4 GHz||Radeon R7||6||900 MHz||65W|
|A6-9500||2||3.5 GHz / 3.8 GHz||Radeon
|A6-9500E||2||3.0 GHz / 3.4 GHz||Radeon
|Athlon X4 950||4||3.5 GHz / 3.8 GHz||None||0||N/A||65W|
To expand on the performance increases of Bristol Ridge, AMD compared the A12-9800 to the previous generation A10-8850 as well as Intel's Core i5-6500. According to the company, the Bristol Ridge processor handily beats the Carrizo chip and is competitive with the Intel i5. Specifically, when comparing Bristol Ridge and Carrizo, AMD found that the A12-9800 scored 3,521.25 in 3DMark 11 while the A10-8850 (95W Godavari) scored 2,880. Further, when compared in Cinebench R11.5 1T the A12-980 scored 1.21 versus the A10-8850's 1.06. Not bad when you consider that the new processor has a 30W lower TDP!
With that said, the comparison to Intel is perhaps most interesting to the readers. In this case, the A12-9800 is about where you would expect though that is not necessarily a bad thing. It does pull a bit closer to Intel in CPU and continues to offer superior graphics performance.
|AMD A12-9800 (65W)||Intel Core i5-6500 (65W)||AMD A10-8850 (95W)|
3DMark 11 Performance
|PCMark 8 Home Accelerated||3,483.25||3,702||Not run|
|Cinebench R11.5 1T||1.21||Not run||1.06|
Specifically, in 3DMark 11 Performance the A12-9800's score of 3,521.25 is quite a bit better than the Intel i5-6500's 1,765.75 result. However, in the more CPU focused PCMark 8 Home Accelerated benchmark the Intel comes out ahead with a score of 3,702 versus the AMD A12-9800's score of 3,483.25. If the price is right Bristol Ridge does not look too bad on paper, assuming AMD's testing holds true in independent reviews!
The AM4 Platform
Alongside the launch of desktop 7th generation APUs, AMD is launching a new AM4 platform that supports Bristol Ridge and is ready for Zen APUs next year. The new platform finally brings new I/O technologies to AMD systems including PCI-E 3.0, NVMe, SATA Express, DDR4, and USB 3.1 Gen 2.
According to Digital Trends, AMD's AM4 desktop platform wil span all the way from low end to enthusiast motherboards and these boards will be powered by one of three new chipsets. The three new chipsets are the B350 for mainstream, A320 for "essential," and X/B/A300 for small form factor motherboards. Notably missing is any mention of an enthusiast chipset, but one is reportedly being worked on and will arive closer to the launch of Zen-based processors in 2017.
The image below outlines the differences in the chipsets. Worth noting is that the APUs themselves will handle the eight lanes of PCI-E 3.0, dual channel DDR4, four USB 3.1 Gen 1 ports, and two SATA 6Gbps and two NVMe or PCI-E 3.0 storage devices. This leaves PCI-E 2.0, SATA Express, additional SATA 6Gbps, and USB 3.1 Gen 2 connection duties to the chipsets.
As of today, AMD has only announced the availability of AM4 motherboards and 7th generation APUs for OEM systems (with design wins from HP and Lenovo so far). The company will be outlining the channel / DIY PC builder lineup and pricing at a later (to be announced date).
I am looking forward to Zen and in a way the timing of Bristol Ridge seems strange. On the other hand, for OEMs it should do well and hold them over until then (heh) and enthusiasts / DIY builders are able to buy into Bristol Ridge knowing that they will be able to upgrade to Zen next year (while getting better than Carrizo performance with less power and possibly better overclocking) is not a bad option so long as the prices are right!
The full press blast is included below for more information on how they got their benchmark results.
Clean Sheet and New Focus
It is no secret that AMD has been struggling for some time. The company has had success through the years, but it seems that the last decade has been somewhat bleak in terms of competitive advantages. The company has certainly made an impact in throughout the decades with their 486 products, K6, the original Athlon, and the industry changing Athlon 64. Since that time we have had a couple of bright spots with the Phenom II being far more competitive than expected, and the introduction of very solid graphics performance in their APUs.
Sadly for AMD their investment in the “Bulldozer” architecture was misplaced for where the industry was heading. While we certainly see far more software support for multi-threaded CPUs, IPC is still extremely important for most workloads. The original Bulldozer was somewhat rushed to market and was not fully optimized, while the “Piledriver” based Vishera products fixed many of these issues we have not seen the non-APU products updated to the latest Steamroller and Excavator architectures. The non-APU desktop market has been served for the past four years with 32nm PD-SOI based parts that utilize a rebranded chipset base that has not changed since 2010.
Four years ago AMD decided to change course entirely with their desktop and server CPUs. Instead of evolving the “Bulldozer” style architecture featuring CMT (Core Multi-Threading) they were going to do a clean sheet design that focused on efficiency, IPC, and scalability. While Bulldozer certainly could scale the thread count fairly effectively, the overall performance targets and clockspeeds needed to compete with Intel were just not feasible considering the challenges of process technology. AMD brought back Jim Keller to lead this effort, an industry veteran with a huge amount of experience across multiple architectures. Zen was born.
Hot Chips 28
This year’s Hot Chips is the first deep dive that we have received about the features of the Zen architecture. Mike Clark is taking us through all of the changes and advances that we can expect with the upcoming Zen products.
Zen is a clean sheet design that borrows very little from previous architectures. This is not to say that concepts that worked well in previous architectures were not revisited and optimized, but the overall floorplan has changed dramatically from what we have seen in the past. AMD did not stand still with their Bulldozer products, and the latest Excavator core does improve upon the power consumption and performance of the original. This evolution was simply not enough considering market pressures and Intel’s steady improvement of their core architecture year upon year. Zen was designed to significantly improve IPC and AMD claims that this product has a whopping 40% increase in IPC (instructions per clock) from the latest Excavator core.
AMD also has focused on scaling the Zen architecture from low power envelopes up to server level TDPs. The company looks to have pushed down the top end power envelope of Zen from the 125+ watts of Bulldozer/Vishera into the more acceptable 95 to 100 watt range. This also has allowed them to scale Zen down to the 15 to 25 watt TDP levels without sacrificing performance or overall efficiency. Most architectures have sweet spots where they tend to perform best. Vishera for example could scale nicely from 95 to 220 watts, but the design did not translate well into sub-65 watt envelopes. Excavator based “Carrizo” products on the other hand could scale from 15 watts to 65 watts without real problems, but became terribly inefficient above 65 watts with increased clockspeeds. Zen looks to address these differences by being able to scale from sub-25 watt TDPs up to 95 or 100. In theory this should allow AMD to simplify their product stack by offering a common architecture across multiple platforms.
Subject: Graphics Cards, Processors | June 13, 2016 - 03:51 PM | Scott Michaud
Tagged: amd, Polaris, Zen, Summit Ridge, rx 480, rx 470, rx 460
AMD has just unveiled their entire RX line of graphics cards at E3 2016's PC Gaming Show. It was a fairly short segment, but it had a few interesting points in it. At the end, they also gave another teaser of Summit Ridge, which uses the Zen architecture.
First, Polaris. As we know, the RX 480 was going to bring >5 TFLOPs at a $199 price point. They elaborated that this will apply to the 4GB version, which likely means that another version with more VRAM will be available, and that implies 8GB. Beyond the RX 480, AMD has also announced the RX 470 and RX 460. Little is known about the 470, but they mentioned that the 460 will have a <75W TDP. This is interesting because the PCIe bus provides 75W of power. This implies that it will not require any external power, and thus could be a cheap and powerful (in terms of esports titles) addition to an existing desktop. This is an interesting way to use the power savings of the die shrink to 14nm!
They also showed off a backpack VR rig. They didn't really elaborate, but it's here.
As for Zen? AMD showed the new architecture running DOOM, and added the circle-with-Zen branding to a 3D model of a CPU. Zen will be coming first to the enthusiast category with (up to?) eight cores, two threads per core (16 threads total).
The AMD Radeon RX 480 will launch on June 29th for $199 USD (4GB). None of the other products have a specific release date.
Some Fresh Hope for 2016
EDIT 2015-05-07: A day after the AMD analyst meeting we now know that the roadmaps delivered here are not legitimate. While some of the information is likely correct on the roadmaps, they were not leaked by AMD. There is no FM3 socket, rather AMD is going with AM4. AMD will be providing more information throughout this quarter about their roadmaps, but for now take all of this information as "not legit".
SH SOTN has some eagle eyes and spotted the latest leaked roadmap for AMD. These roadmaps cover both mobile and desktop, from 2015 through 2016. There are obviously quite a few interesting tidbits of information here.
On the mobility roadmap we see the upcoming release of Carrizo, which we have been talking about since before CES. This will be the very first HSA 1.0 compliant part to hit the market, and AMD has done some really interesting things with the design in terms of performance, power efficiency, and die size optimizations. Carrizo will span the market from 15 watts to 35 watts TDP. This is a mobile only part, but indications point to it being pretty competent overall. This is a true SOC that will support all traditional I/O functions of older standalone southbridges. Most believe that this part will be manufactured by GLOBALFOUNDIRES on their 28 nm HKMG process that is more tuned to AMD's APU needs.
Carrizo-L will be based on the Puma+ architecture and will go from 10 watts to 15 watts TDP. This will use the same FP4 BGA connection as the big Carrizo APU. This should make these parts more palatable for OEMs as they do not have to differentiate the motherboard infrastructure. Making things easier for OEMs will give more reasons for these folks to offer products based on Carrizo and Carrizo-L APUs. The other big reason will be the GCN graphics compute units. Puma+ is a very solid processor architecture for low power products, but these parts are still limited to the older 28 nm HKMG process from TSMC.
One interesting addition here is that AMD will be introducing their "Amur" APU for the low power and ultra-low power markets. These will be comprised of four Cortex-A57 CPUs combined with AMD's GCN graphics units. This will be the first time we see this combination, and the first time AMD has integrated with ARM since ATI spun off their mobile graphics to Qualcomm under the "Adreno" branding (anagram for "Radeon"). What is most interesting here is that this APU will be a 20 nm part most likely fabricated by TSMC. This is not to say that Samsung or GLOBALFOUNDRIES might be producing it, but those companies are expending their energy on the 14 nm FinFET process that will be their bread and butter for years to come. This will be a welcome addition to the mobile market (tablets and handhelds) and could be a nice profit center for AMD if they are able to release this in a timely manner.
2016 is when things get very interesting. The Zen x86 design will dominate the upper 2/3 of the roadmap. I had talked about Zen when we had some new diagram leaks yesterday, but now we get to see the first potential products based off of this architecture. In mobile it will span from 5 watts to 35 watts TDP. The performance and mainstream offerings will be the "Bristol Ridge" APU which will feature 4 Zen cores (or one Zen module) combined with the next gen GCN architecture. This will be a 14nm part, and the assumption is that it will be GLOBALFOUNDRIES using 14nm FinFET LPP (Low Power Plus) that will be more tuned for larger APUs. This will also be a full SOC.
The next APU will be codenamed "Basilisk" that will span the 5 watt to 15 watt range. It will be comprised of 2 Zen cores (1/2 of a Zen module) and likely feature 2 to 4 MB of L3 cache, depending on power requirements. This looks to be the first Skybridge set of APUs that will share the same infrastructure as the ARM based Amur SOC. FT4 BGA is the basis for both the 2015 Amur and 2016 Basilisk SOCs.
Finally we have the first iteration of AMD's first ground up implementation of ARM's ARMv8-A ISA. The "Styx" APU features the new K12 CPU cores that AMD has designed from scratch. It too will feature the next generation GCN units as well as share the same FT4 BGA connection. Many are anxiously watching this space to see if AMD can build a better mousetrap when it comes to licensing the ARM ISA (as have Qualcomm, NVIDIA, and others).
2015 shows no difference in the performance desktop space, as it is still serviced by the now venerable Piledriver based FX parts on AM3+. The only change we expect to see here is that there will be a handful of new motherboard offerings from the usual suspects that will include the new USB 3.1 functionality derived from a 3rd party controller.
Mainstream and Performance will utilize the upcoming Godavari APUs. These are power and speed optimized APUs that are still based on the current Kaveri design. These look to be a simple refresh/rebadge with a slight performance tweak. Not exciting, but needs to happen for OEMs.
Low power will continue to be addressed by Beema based APUs. These are regular Puma based cores (not Puma+). AMD likely does not have the numbers to justify a new product in this rather small market.
2016 is when things get interesting again. We see the release of the FM3 socket (final proof that AM3+ is dead) that will house the latest Zen based APUs. At the top end we see "Summit Ridge" which will be composed of 8 Zen cores (or 2 Zen modules). This will have 4 MB of L2 cache and 16 MB of L3 cache if our other leaks are correct. These will be manufactured on 14nm FinFET LPE (the more appropriate process product for larger, more performance oriented parts). These will not be SOCs. We can expect these to be the basis of new Opterons as well, but there is obviously no confirmation of that on these particular slides. This will be the first new product in some years from AMD that has the chance to compete with higher end desktop SKUs from Intel.
From there we have the lower power Bristol Ridge and Basilisk APUs that we already covered in the mobile discussion. These look to be significant upgrades from the current Kaveri (and upcoming Godavari) APUs. New graphics cores, new CPU cores, and new SOC implementations where necessary.
AMD will really be shaking up the game in 2016. At the very least they will have proven that they can still change up their game and release higher end (and hopefully competitive) products. AMD has enough revenue and cash on hand to survive through 2016 and 2017 at the rate they are going now. We can only hope that this widescale change will allow AMD to make some significant inroads with OEMs on all levels. Otherwise Intel is free to do what they want and what price they want across multiple markets.
Subject: General Tech | April 27, 2015 - 01:04 PM | Jeremy Hellstrom
Tagged: Summit Ridge, rumours, Godavari, Bristol Ridge, amd
This morning DigiTimes is reporting on a unconfirmed rumour that AMD's new APU, Godavari, will be arriving towards the end of May of this year. This goes along with the leak that WCCFtech reported on this weekend, they have information that the chip will be a Kaveri design with up to four Steamroller cores, a GCN 1.1 base GPU with up to 512 stream processors and a dual-channel DDR3 memory in an FM2+ socket. If their information is accurate you can expect to see models with 65W or 95W TDPs and boost clocks in the 4GHz range depending on the model. Also worth noting is the rumour that AMD has placed orders with ASMedia Technology for USB 3.1 controller ICs for release in September.
"AMD will launch Godavari series APUs at the end of May to compete with Intel's Broadwell and Skylake platforms, according to Taiwan-based supply chain makers."
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