Untill AMD get thier new proccesor out to compete with the dual core 2 an AMD 64 x 2 is faster than the intel equivalent at the moment, when AMD put thier new processor out then we will see who is faster or better.
You can spend £1000 or $1800 on a 1gb graphic card and have 2 of them with a quad processor and the fastest mother board going, but ill still take an AMIGA 500 with a video toaster anyday for video work over a pc.