As mentioned above, the PS3 uses the RSX "Reality Synthesizer", which is a modified version of nVidia's GeForce 7800 series. It's speed is 550MHz on a 65nm dye process and boasts a ~200 GigaFLOPS (Floating point calculatings per second) in terms of performance. It has 256MB of GDDR3 RAM, giving it sufficient memory to store the graphics for most PS3 games. While fairly advanced when it first came out in 2006, graphics technology has improved significantly since then, and a top-of-the-line computer graphics card of today could easily out-compete the RSX for performance.