[SoLiDUS]

64-bit XP and drivers are NOT optimized. Do NOT upgrade to it...

However, when it IS optimized, you will be happy to have purchased that
64 bit processor. I don't recommend anything higher than Athlon 64 3400,
9800XT and 1GB Corsair CL2 timing RAM... as more means overkill and
little in the way of extra BANG for the expensive hardware purchased. If
you have difficulty running HL2 and DOOM3 with an A64 3000+, 9800 Pro,
1GB Corsair and associated hardware, it's either your software configuration
or the programmers are retarded and did NOT optimize their code.