What GPU will the new ps4 have? The ps3 had an RSX in it which was comparable to a 8800 geforce card. The ps4 could have something like a modified nvidia 480 gtx. This is currently the most powerful card in the computer market with the exception of the ATI 5970. If it takes 2 years to develop the system it makes sense that they would go with one of these two cards. However, the 5970 is too expensive and goes for about $700. The 480 GTX goes for about $499 so perhaps it will be something cheaper in the range of a 470 gtx or 460 which are somewhat cheaper.
To give an idea of what kind of power a 480 GTX has I will provide an example. Crysis for pc can run at over 80 fps with a 2560 X 1600 resolution, 4X anti-aliasing and full tesselation with a 480 gtx. That is crazy resolution and you would need a damn projector to make use of it. Bump this down to 1080p, which will likely be standard in ps4, and you get an idea of how good the graphics could be on a new console.
However I do believe that since the PS4 is a “closed” system and that the cell can do some graphical processing that a relatively moderate GPU can be used in the PS4. For comparison the PS3 uses the Reality Synthesizer developed by Nvidia, clocked at 550MHz with 256Mb of GDDR3 clocked at 700MHz.
So if Sony is going to continue with stereoscopic 3D then that will rule out any ATI 5000 series cards and below and I do believe that Sony will stick with Nvidia anyway since they have a good relationship. The PS4 will need to be able to support 1080p 3D @ 60 FPS per eye so it has to have enough VRAM.
The Nvidia GeForce GTX 560 (due to be released in 2011) fits the bill perfectly. A 256 bit bus so that it can communicate with the cell fast enough, a 820MHz core clock speed, 1Gb of VRAM clocked @ 1GHz (4GHz effective speed). All of which if utilised properly could do 1080p @ 120 FPS and most importantly unified shader cores means more polygons, higher resolution textures and better effects.
Although one thing to consider is Imagination Tech, and Intel. Imagination Tech’s PowerVR 6 series GPU they are developing for 2011/2012 release. As well as Intel’s Larrabee 2.0 GPU planned for 2011/2012 release. They are complete wild cards at the moment and noone knows where they are going to go and what they will be capable of doing or even if at all in the new console generation. If not in consoles they will hit the mobile market in some way. I personally can’t wait to see what happens.