Poll Will Sony ever "enable" the extra 128 cores in the PS4 in the future? (49 votes)
Many of you may know that PS4 actually has 128 MORE stream processors according to the Chinese site below. Making this a full blown Pitcairn GPU. In other words instead of having 1152 stream processors it actually has 1280 stream processor, in other words a fully blown 7870 GPU. Now, from what I read that Sony hasn't fully laser cut this extra cores and are using that for redundancy. This is not a surprise as in the PC world this is done with GPU's for yield reasons. Also, sometimes when some of the stream processors can't be used they just sell at as a lower tier model instead of getting rid of the entire GPU. Or it could work the other way when the GPU might be fine but the GPU maker chooses to block some of it any way and sell it as lower tier GPU in which case you may be able to exploit it which I did to my benefit when a flashed my HD 6950 to a fully blown HD 6970 with ALL it's 1536 stream processors. :)
IMO, these extra cores are certainly for redundancy and given the history of consoles (unlike the GPU industry) I highly doubt Sony will ever enable the extra cores. (sorry to disappoint you Sony fanboys!)
But given it's not laser cut..PS4 supporters can argue that in future iterations or when the release a "slim" version of the PS4 with better yields Sony may enable some of the cores (even without informing the press about it). I am willing to bet my money that they won't because I have never heard of such a thing ever happening in the history of consoles (correct me if I am wrong).
Enabling this extra cores with it'ss 10% performance boost, will certainly benefit later PS4 adopters down the road who do buy a fully enabled PS4 where they will get better frame rates in games. This means that upcoming games that are coming out on the PS4 like Tomb Raider Definitive Edition which I believe will have TressFX will run even better on the PS4 as TressFX is demanding on the GPU.
So, what do you think?
Source below:
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http://news.mydrivers.com/1/282/282961.htm
(translated to you via Google translate).
PS4 APU explore: hidden 128 stream processors? !
After the succession of several major chip PS4 X-ray, microscopic observation, ChipWorks focused on the SoC processor, which is sinking AMD APU.
Sony used the radiator is enormous, but the processor itself does not install a metal roof, so you can directly see the kernel. After accurate measurement, core area of 19.0 × 18.3 = 348 square millimeters, the host is kind of a big chip, you know PS3 CPU + GPU inside but also add up 228 mm2, and the time is 40/45nm technology, now is the new 28nm.
This is a photomicrograph of the metal layer, but also what to see.
This is a plan view of a transistor-level kernel, can easily find CPU, GPU, memory controller. Eight Jaguar Jaguar CPU core is no accident, but a careful count can be found, even GPU computing units in 20 groups of 64 stream processors, then it is 1280 stream processors.
According to previous news, PS4 GPU computing unit is equipped with 18 sets, 1152 stream processors, floating point performance 1.84TFlops, between Radeon HD 7850/7870. According to this view, it seems to hide a tenth of strength, but it was unclear why the - guaranteed yield? This unit has a card or two uses?
Maybe someday PS4 will be full of 1280 stream processors, Xbox One 768 个 even more immeasurably.
Again the math area. Coupled with AMD's claims based on observation, Jaguar CPU core for each area of 3.1 mm2, with the corresponding secondary cache is 6.5 mm2, the total add up to 52 mm2, approximately 15% of the total area.
GPU core in each cell plus level cache, secondary cache area of ​​approximately 5.6 mm2, GPU with a total area of ​​about 112 mm2, representing approximately 32% of the whole kernel, while the CPU is twice as much.
Can be seen from the side of the metal layer 11 of copper , in addition to aluminum and a top layer (not shown).
Local amplification, showing that TSMC 28nm HKMG process , much like the Radeon GPU 28HP process variants.
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