drkohler said:
The GPU in the PS3 IS a GeForce GT7800. When the dual-cell design fell flat, Sony had no time left for anything really new. Sony paid $20mio to NVidia for a slightly modified 7800 design (the dram bus interface was changed to an XDR interface, and unneded video circuitry in the GPu was taken out. |
Just had a quick look and you're pretty much right. A few minor differences:
Difference RSX | nVidia 7800GTX
GDDR3 Memory bus width 128bit | 256bit
ROPs 8 | 16
Post Transform and Lighting Cache 63 max vertices | 45 max vertices
Total Texture Cache Per Quad of Pixel Pipes (L1 and L2) 96kB | 48kB
CPU interface FlexIO | PCI-Express 16x
Technology 90nm | 110nm
But the same chip otherwise.