NVIDIA: PS4 GPU 3x less powerful than Titan, but more powerful than Xbox 720

[Jega]

I'm not sure if anyone has mentioned this but I saw a couple times that the xbox 720 has a dual gpu.

http://www.expertreviews.co.uk/games/1296739/xbox-720-release-date-specs-news-and-rumours

PROCESSOR AND GRAPHICS - updated 26/03/13

As with the PS4, the Xbox 720 looks certain to use AMD graphics hardware. VG247 reports that multiple sources have confirmed to it that the console will use two GPUs in tandem, it goes on to say that these won't be used in the usual 'CrossFire' configuration seen in PCs. We're not sure about all this as complex hardware architectures have been the failing of many consoles in the past, as a simple architecture is easier for developers to get to grips with quickly.

In any case it's the RAM that really matters if the ps4 is using 8 gigs of memory, you can bet xbox 720 will at least match that.