on dual/multi core:
dolphin final 1.03.2 beta has dual/multi core issues. tested on both AMD FX60 & Intel Core Duo T2400 cpus. until the code or plugins are fixed, set dolphin's process affinity via the windows task manager. the main advantage of dual/multi core is that threads in the ready queue run sooner. At the moment I have 590 threads total. so yeah, multi core is good.
on 64 bit:
at present, there is no 64bit build of dolphin. too bad; i want it. 64bit is good for math and memory. too bad xp64 drivers suck. vista64 intends to change all that.
on amd vs. intel:
i have an general opinion. but regarding gc emulation, i havent benchmarked it. speaking of which, is there a gc emulation benchmark?
on graphics cards:
at the moment, ati has better hardware but nvidia has better drivers.
on mothers day:
call your mother!