The folks at Bare Feats have taken a performance look at the latest MacBooks out of Apple, utilizing the Santa Rosa chipset. I feel sorry for anyone who just bought a MacBook prior to these ones being announced, because the 8600GT really adds a nice punch.
The new MacBook Pro with the GeForce 8600M runs 3D accelerated games significantly faster than the previous 2.33GHz model with the Mobility Radeon X1600. For example, Quake 4 ran 60% faster, Prey 55% faster, and Doom 3 ran 38% faster. The “Rosa” even beat the 4-Core Mac Pro desktop with a GeForce 7300 GT in 4 out of 5 of our tests.
Source: Bare Feats