Will the PS4 represent 50% better performance than the X1

[HoloDust]

jake_the_fake1 said:

MaulerX said:

Well that's the thing, things might not be as similar as you think. The X1 has four LZ77 Move Engines built into the GPU that compresses and decompresses in the background. Something that the PS4 GPU obviously does not.  The audio chip in the X1 is supposedly a powerhouse as well (presumably to handle Kinects vastly improved voice recognition, amongst other things). This might end up like the PS3/360, one system "appears" to be more powerful but in the end they end up much more comparable because of other factors beyond the Teraflop count.

The move engines are nothing more than part of the DMA setup, all they've added is some extra compression units, to say that it's something over the PS4 when the PS4 also uses DMA and also have compression units is disingenuous. To be clear, the DMA on the Xbox one has been modified enough in order to keep the ESRAM full and the GPU fed, something the PS4 doens't need to worry about since it has no ESRAM, in other words the Move Engine are nothing special, their just there along with ESRAM to mitigate the low bandwidth of DDR3 memory. The PS4 simply has 8GB of fast ram, 176GB/s, accessible by both the GPU/CPU and this is why neither ESRAM or Move engine are required, 2 approaches to achieve the same goal, the PS4 just achieves the goal better with less headaches.

This. People seem to forget that PS4 arhictecture also has lot of improvements over off the shelf parts.

For all those who missed Gamasutra interview with Mark Cerny, here it is again:

http://www.gamasutra.com/view/feature/191007/