My MacBook (Intel C2D) and desktop (AMD AX2) are similarly specced and the Mac creams my desktop in almost everything.
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.: Mac Pro :: Dual Quad-Core Intel Xeon 5400s :: 6 GB 800MHz DDR2 ECC FB-DIMMs :: NVIDIA GeForce 8800 GT 512 MB GDDR3 :.
.: Macbook Pro 17" :: 2.33 GHz Intel Core 2 Duo :: 2 GB 667 MHz DDR2 :: ATI Radeon X1600 :.