I’ll have to disagree a bit. The only reason not to use Opteron for gaming, in general, is higher memory latency because of the type of DRAM it needs. The Opteron is, after all, exactly like the FX processors, modulo SMP support and marketing.
The IWILL SFF, however, does look like it only has one CPU with RAM on it, so you are partly correct.
I think you’re also correct about XP, too. IIRC, Windows XP has neither processor nor resource affinity built in.
Sorry, just being pedantic. :wink: