Facts
GC:
- 485MHz custom CPU with 162MHz custom graphics processor
- 40MB total memory; 2.6 GB per second memory bandwidth
- 12M polygons per second; texture read bandwidth 10.4 GB per second
- 64 audio channels
PS2:
- CPU: Emotion Engine 300MHz, 128-bit INT, 128-bit FP, 24KB L1, 16KB Scratch, 8KB VU0, 32KB VU1, 450 MIPS, 6.2 GFLOPS, 66M Vertices/Sec, 2.4 GB/s Internal, 1.2 GB/s Graphics, 3.2 GB/s Memory
- Graphics: Sony GS 150MHz, 1.2G Texels/Sec, 32-bit Color, 4MB (48 GB/s), 1.2 GB/sec Bus
- Sound: SPU2, 48 2D Voices, ADPCM, 2MB
Sadly I cant make heads or tailes of the PS2 specs listed here. I think all the custom chips in both systems make them hard to compare at this point, it's like the PS2 might be more powerful but onlu because it has to work harder to do what the GC was naturally designed for.