Scisca said:
| TallSilhouette said:
Topping 6tflops in a console is expected to require a Vega gpu (why it's still so far out), not Polaris and not the 480, whatever it's capable of with a good desktop setup. Pairing that with a Zen cpu would be seriously costly and they would have bragged about it too if they were using it. Really doubt we'll see it debut at $450 or lower unless they want to eat a big loss.
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Why? RX 480 sits at aroung 5.5 - 5.6 tflops, the full chip with 40 CUs and 2560 SPs (RX 480 has 36 and 2304) should hit 6 tflops nicely without the need of Vega. Obviously, I'm not discounting the possibility of Vega, but I don't think they have to go that far. It's a console after all, it will get better perfomance in games than RX 480 gets in a PC.
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To quote DF:
First up, let's discuss the GPU - the area of the spec that Microsoft is clearly most proud of. The rumoured six TFLOPs of processing power is confirmed, out-stripping the 4.2TF found in PlayStation Neo by quite some margin. It's around 40 per cent faster, calling to mind the advantage PS4 had over Xbox One.
We know how Sony has achieved its performance target - it is almost certainly utilising the AMD Polaris 10 graphics core, using 36 next-gen GCN compute units clocked at 911MHz. Essentially, it is a downclocked version of the Radeon RX 480 graphics card - AMD's upcoming $199 next-gen GPU, aimed squarely at the mainstream gamer while also offering good, entry-level VR capabilities. We can be fairly sure that this GPU is a cut-down version of a yet-to-be-seen product, quite possibly one with 40 compute units. By leaving a portion of the CUs deactivated, imperfect chips can be used from the production line - it's a tactic used on both PS4 and Xbox One, both of which have two offline CUs on the silicon.
However, based on the differential in spec between Neo and Scorpio, it's unlikely that the new Microsoft console uses Polaris at all. A 40 CU part would need a mighty overclock to hit 6TF, and based on the rendered imagery we've seen, the heating assembly planned for Scorpio looks a little lacklustre. With that in mind, our money is on a downclocked version of AMD's upcoming Vega technology.
Thanks to an AMD engineer rather unwisely posting a partial spec for Vega on his LinkedIn profile (!) we know that the fully enabled processor features 64 compute units. Assuming that this is cut down to 56 CUs (as in the Radeon R9 Fury, a pared back version of the 64 CU Fury X), a clock speed in the 830-850MHz region looks likely. Alternatively, and perhaps more likely, we could be seeing 60 CUs at 800MHz. Both represent a substantial increase over PlayStation 4K Neo, while the raw increase to performance over PS4 and Xbox One is obviously much larger.
Modern consoles use cut down versions of PC cards for higher yields and better deals on the hardware. Neo is the one using the 480 you're toting, but a compact console can't clock a gpu as high as a big desktop rig can or it would overheat. If an affordable console could safely overclock a card like you're claiming, the Neo would be significantly more powerful than we're expecting. If the card MS is using were already out today for $200 retail, they wouldn't have to wait so long to release the console. So if Scorpio wants to reach 6tflops, it's gonna need to cut down a Vega, not overclock a Polaris.