See for yourself:
P4 Vs. AMD Vs. PM
2GHz P-M equals around a P4 3.6GHz or AMD A64 3500+ for gaming.
I run Farcry on my 17" laptop at it's native resolution on 1440x900, with it's 1.8GHz P-M, and ATi mr9700, high quality, and it is flawless. Similar results with Half-Life 2 at 1440x900.
Centrino is NOT a processor.
I do NOT have a Centrino laptop.
Centrino is a chipset "package" that includes a P-M, and also MUST include "Intel" wireless network adaptor.
I skipped the Intel adaptor, and went with the faster Dell 1350, which means I didn't get the Centrino sticker on my laptop.