Hot Chips: Xbone Silicon (5b transistors, 363mm2, 8GB Flash, 1.31TFlops, 204GB/s peak BW)

[Scoobes]

Shinobi-san said:

Machiavellian said:

There is nothing spin about that part.  Memory is always calculated as a total of its read and write capabilities if it can be performed at the same time.  Since this was stated at the hot chips event, I am sure MS would have been called out on it.  So peak performance of the ESram is 200GB/s 

The 3.2TF was the combined GPU and CPU together.  The 1.8TF is just the GPU alone.  I have not attempted to do the calculations but most times its a system total calculations that is measured instead of just the GPU.  Anyway, who cares, all of this was an interesting fun read.

Apologies i was wrong. 204 is indeed the correct number. I was getting confused between that and the 270 number that was going around in other threads! Which basically someone went and added the bandwidth of the ESRAM and DDR3 ram. Which is incorrect.

As far as I know the PS4 CPU does not even have 1TF of compute performance? Was this not confirmed to be ~200GFlops?

200GFlops for the PS4 CPU?! Isn't that a bit much considering both consoles are using low powered Jaguar cores. If this table is anything to go by:

http://www.techpowerup.com/forums/showthread.php?t=94721

then even an overclocked Core i7 is only capable of just over 100GFlops. I doubt the Jaguar chips are going to do anywhere close to an i7 in terms of floating point calculations, even with 8 true cores.