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nVidia Speaks On Performance Issue
Nvidia has said that most of the outlandish performance increase figures touted by GPGPU vendors was down to poor original code rather than sheer brute force computing power provided by GPUs.
Both AMD and Nvidia have been using real-world code examples and projects to promote the performance of their respective GPGPU accelerators for years, but now it seems some of the eye popping figures including speed ups of 100x or 200x were not down to just the computing power of GPGPUs. Sumit Gupta, GM of Nvidia’s Tesla business said that such figures were generally down to starting with unoptimized CPU code.
During Intel’s Xeon Phi pre-launch press conference call, the firm cast doubt on some of the orders of magnitude speed up claims that had been bandied about for years. Now Gupta told The INQUIRER that while those large speed ups did happen, it was possible because of poorly optimized code to begin with, thus the bar was set very low.
Gupta said, “Most of the time when you saw the 100x, 200x and larger numbers those came from universities. Nvidia may have taken university work and shown it and it has an 100x on it, but really most of those gains came from academic work. Typically we find when you investigate why someone got 100x [speed up] is because they didn’t have good CPU code to begin with. When you investigate why they didn’t have good CPU code you find that typically they are domain scientist’s not computer science guys – biologists, chemists, physics – and they wrote some C code and it wasn’t good on the CPU. It turns out most of those people find it easier to code in CUDA C or CUDA Fortran than they do to use MPI or Pthreads to go to multi-core CPUs, so CUDA programming for a GPU is easier than multi-core CPU programming.”
AMD’s Roadmap Leaked
According to the latest AMD desktop roadmap, published by DonanimHaber, the Steamroller architecture could be delayed, which means Piledriver cores will power AMD’s third-generation APUs.
So what does this mean for consumers? Well, Richland APUs might not be quite as good as expected. AMD could optimize the x86 cores and go for more powerful graphics, but it’s hard to get excited about the next generation.
Vishera parts will also stick to Piledriver cores, backed by discreet Radeon 7xxx and 8xxx series graphics. However, we will see a new architecture in the low end. Kabini is apparently on track to launch next year, with Jaguar cores, refreshed graphics and an all new system-on-chip version, with an integrated on-chip Fusion controller hub (FCH).
What’s more, AMD will also offer quad-core Kabini parts, and who could say no to a dirt cheap E-series APU with four cores, good graphics and a ridiculous TDP?
AMD Makes More Cuts
There have been some rumors that AMD plans to drop prices on its older generation APUs as well as some AM3 Athlon II CPUs and as of yesterday, the new price list confirmed those cuts. Unfortunately the price cuts are not that impressive on the FM1 side but some AM3 Athlon II CPUs have seen a price reduction of over 30 percent.
The full list includes a total of six A-Series APUs and twelve AM3 Athlon II CPUs. The most impressive price cut in the A-Series was on the A4-3300 APU for 21.7 percent, or from US $46 down to US $36. The flagship A8-3870K got cut down by 9.9 percent while A6-3670K was cut down by far less impressive 3.7 percent.
The most impressive price cuts on the AM3 Athlon II side is on the Athlon II X4 640 and the Athlon II X2 265. The Athlon II X4 640 got cut down from US $98 to US $67, or 31.6 percent, while Athlon II X2 265 got cut down from US $69 to US $48, or 30.4 percent.
Two Athlon II CPUs, the X3 445 and the X4 638, were removed from the price list as they were most likely discontinued.
You can check out the full list and price cuts over at CPU-World.com.
AMD Goes Piledriver
AMD has released its Piledriver desktop
processors codenamed Vishera.
AMD showed off Vishera at IDF last month, an overclocked chip running at 5GHz. Now the company has taken the wraps off its eight-core Vishera chip, a processor that it hopes will finally bury memories of its disappointing Bulldozer Zambezi chip.
AMD’s Vishera processors will continue to use Socket AM3+, meaning it is a drop-in upgrade for those customers lumbered with Zambezi processors.
The firm announcing four models all branded with the FX moniker. The low-end Vishera chip is the quad-core FX-4300 clocked at 3.8GHz boosted up to 4.0GHz, with 4MB of Level 3 cache.
The firm has kept feature parity throughout its Vishera FX range aside from core count and total Level 3 cache. Therefore AMD’s six-core FX-6300 still sports the same 1MB of Level 2 cache per core but has a total Level 3 cache of 8MB and is clocked at 3.5GHz that can be boosted up to 4.1GHz.
AMD’s top two Vishera parts, the FX-8320 and FX-8350 sport eight cores and have 8MB of Level 3 cache. The difference between the two chips is their clock frequencies, with the FX-8320 running at 3.5GHz and boosted to 4.0GHz while the FX-8350 is clocked at 4.0GHz and is boosted to 4.2GHz.
The firm’s decision to clock its FX-8320 and FX-8350 so closely is largely academic, as all Vishera chips feature an unlocked multiplier. AMD even plays up the overclockability of Vishera and touts 5GHz as being reachable with water cooling. Insiders have even said it can reach 5GHz with strong air cooling.
As for AMD’s Piledriver architecture, the firm claims it offers improved branch prediction and improvements to Level 2 cache efficiency and scheduling. Overall the company is sticking to its longstanding line that Vishera is a 15 percent performance increase over Bulldozer, and while that might well be true, Bulldozer was so far behind its competition in single-threaded performance that a 15 percent gain is needed simply to achieve parity, let alone a lead.
AMD Adds On For GPU
AMD is offering a new games bundle with HD 7000 series cards and oddly enough, the games on offer are pretty good.
Anyone who goes for an HD 7900 series card is looking at Farcry 3, Hitman: Absolution and Sleeping Dogs. Buyers of two HD 7800 cards or a dual-headed HD7770 GHz edition can expect Farcry and Hitman, while those less fortunate, who end up with a single HD 7800 or HD 7770 series card will get just Farcry.
Still, this is pretty good value for money and the choice of titles is just as good. Bundled games tend to be somewhat older, less popular titles, so AMD’s new Never Settle bundle seems like a welcome breath of fresh air.
AMD Makes Cuts
AMD has cut its third quarter revenue and gross margin forecasts citing weak demand.
AMD’s lacklustre Bulldozer processor line has left the firm desperately trying to compete with Intel in the desktop market while its more impressive accelerated processor unit (APU) range has been rebuffed by Intel’s multi-million dollar ultrabook marketing push. Now AMD has revised down its estimate of third quarter revenues, which it says will be around 10 percent lower than the previous quarter.
Even more worrying for AMD is its lower forecast for gross margin, the difference between selling an item and the cost to make it, down from 44 percent to 31 percent. Effectively AMD said its cost of doing business has risen considerably higher, although it laid most of the blame on an $100m inventory writedown.
AMD couldn’t avoid admitting the blindingly obvious and said that its writedown of inventory was due to “lower anticipated future demand for certain products”. The firm has suffered through a disappointing 2012, and earlier this year it announced a $580m loss back in April.
AMD And BlueStacks Join Forces
AMD has joined forces with BlueStacks in an effort to bring Android apps to Windows tablets. BlueStacks is the outfit behind Android App Player, a Windows app that enables users to run Android apps on tablets.
Since AMD is not in the ARM game, it could obviously benefit from bringing some popular Android apps to Windows, allowing users to play a few levels of Bad Piggies on Hondo tablets.
However, apps have to be vetted before users can take end up on the AMD AppZone, but it is also possible to install other applications.
The BlueStacks Android Player will also run on Windows 7 and Windows 8 PCs, and it even supports Windows XP.
In the long run, the possibility of running Android apps could be very interesting for consumers thinking about getting a Windows 8 tablet, as it will combine Microsoft’s unmatched enterprise solutions with fun and popular Android apps. Provided the whole thing works as advertised, of course.
AMD Confirms Trinity’s New Specs
AMD has confirmed the specifications of its Trinity accelerated processor units (APUs), with the majority being quad-core units with 4MB cache.
AMD launched its mobile Trinity APUs earlier this year in a bid to cash in on “back to school” sales and now it has detailed the specification of Trinity processors that will slot into desktop systems. The firm confirmed that Trinity has moved from Socket FM1 to Socket FM2 and save for two A4 and A6 SKUs the chips will all be quad-core parts with base frequencies over 3GHz.
AMD stuck with its A4, A6, A8 and A10 branding with the dual-core A4-5300, base clocked at 3.4GHz with turbo mode pushing that up to 3.6GHz and 128 graphics cores clocked at 723MHz at the foot of AMD’s APU line-up. Next up the firm has the unlocked dual-core A6-5400K, which not only bumps the CPU clock speed by 200MHz to 3.6GHz and 3.8GHz for base and turbo modes, respectively, but increases the number of graphics cores to 192 and their frequency to 760GHz.
While AMD’s A4 and A6 Trinity processors are dual-core, the four other chips in the range are all quad-core parts, with the A8-5500 and A8-5600K sporting base clock speeds of 3.2GHz and 3.6GHz, respectively, with turbo mode boosting those to 3.7GHz and 3.9GHz, respectively. The firm has kept the number of graphics cores on both chips the same at 356 and clocked them at 760MHz, however the higher frequency on the A8-5600K means that the firm bumped up the TDP to 100W, though given it is unlocked, the factory TDP is largely academic.
AMD’s A10 chips follow in the same vein as the A8 parts, with the 65W A10-5700 part clocked at 3.4GHz, boosted to 4GHz while the 100W A10-5800K part has its clocks set at 3.8GHz and boosted to 4.2GHz. AMD has given both processors 384 graphics cores clocked at 800MHz.
AMD Details Vishera
AMD will launch three eight-core processors led by the AMD FX 8350 but it also plans to launch two six-core processors for people who like to spend a bit less.
The AMD FX6350 is a 125W six-core with a 3.9GHz base clock and 4.2 maximum turbo core clock. It comes with 14MB of cache, supports DDR 3 1866 and comes in AM3+. Naturally this is a 32nm SOI product just as its predecessor as AMD is not ready for 22nm fun yet.
The runner up is a 3.5GHz clocked six core that turbos to 4.1GHz, all that while staying in 95W TDP envelope. The name is FX 6300 and these two boys should launch together. The rest of the specification is the same as with faster brother. These two processors will replace the Zambezi based FX 6120 and FX 6100. These parts as well as FX 6200 that is also a part of Zambezi legacy are all selling between $190 and $250 which is definitely not a lot of money for quite powerful processors.
AMD Cuts Radeon Prices
After the recent price cut back in July, that included a $50 price cut for HD 7970, HD 7950 and HD 7870 graphics cards, AMD has apparently decided to cut some of these prices even further taking the HD 7950 3GB graphics card down to $320, or just in line with Nvidia’s recently release GTX 660 Ti graphics card.
AMD has already dropped the HD 7970 from $479 to $429, HD 7950 from $399 to US $349 and the HD 7870 down from $349 to $299. The new price cut skips the HD 7970 graphics card but includes the HD 7950, HD 7870 as well as the 1 and 2GB versions of the HD 7850.
The most important is probably the price cut for the 3GB HD 7950 which battles it out with Nvidia’s recently released GTX 660 Ti. The HD 7950 3GB is, according to the report, will receive a $30 price cut placing it at $320. The HD 7870 2GB graphics card got another $50 price cut pushing it down to $250 which probably makes it one of the most interesting mid-range graphics cards on the market.
AMD also decided to drop price on 1 and 2GB version of the HD 7850 graphics card taking them down by $40 to $190 and $210, respectively.