PS4 Neo presentation leaked

[DonFerrari]

Pemalite said:

DonFerrari said:

How is it plausible that Scorpio is smaller, cheaper, more powerfull, with better yield, generate less heat, draw less power using the same architeture?

 

I have already outlined that, so would rather not repeat it again in this thread. (But I will again anyway... :P)

I think you are confusing me for a console gamer, I have no preference to any particular console platform.

Merely saying any benefits in fabbing that one company gets, the other gets also.

DonFerrari said:

what law prevent them? I'm not aware of it.

general improvements will carry, but we are talking about customized chips so the differences between them will block a lot of the improvements being carried.

but explain to me how they using the same basic architeture would end up with ms having a smaller chip, with higher processing power and better yield?

The x86 license agreement. Only Via, AMD, Intel and a couple of fabs are allowed to "look" at them there was a poster on this forum who hilariously thought that Sony built the SoC in the PS4.

Now how would a chip of the same uArch, which is smaller have a higher processing power and yield?

Well, it's all a game of balance really.
Essentially a smaller chip will use less energy due to simply having less transisters, which means if you choose the right transisters you should be able to increase the clockrate to make up for less hardware.
And that is true up to a point. At any process once you hit a certain clockrate and voltage, then power consumption/heat output starts to climb faster.

And we know that 14nm and 16nm has been able to clock pretty impressively without massive jumps in TDP.

Now the leak for the Neo calls for a 933mhz @ 36 CU chip. 36 CU * 4 SIMDs per CU* 16 ALUs per SIMD = 2304 shaders.
2304 shaders * 2 floating point operations per cycle * 933 million cycles per second = 4.3Tflop.

Now... Microsoft could take a 32CU chip which 32 * 4 SIMD's * 16 ALU = 2048.

That would make it a smaller chip than the PS4.

Now to meet Microsofts 6 Teraflop target Microsoft would need 2048 * 2 floats * 1.5 billion cycles per second = 6.1Tflop.
Is 1.5 billion cycles a second possible? Yes. Depending on the transisters used and voltages.

That would give you a chip that is not only smaller than the Neo and thus cheaper to manufacture, but faster as well.

That's just a possible theory, we need more information to go on.

So you expect the components capable of doing all this with less energy and higher frequency to be cheaper?