dual core is amazing. first off, 2.0ghz single core (athlon 64) is enough for most games out today, and if they ever require more than that then the company will optimize it for dual core. i dont think even at X2 at 2ghz is worth upgrading. maybe overclock it to 2.2ghz or 2.4ghz, that ought to be fast enough for now.
i mean, i sold my old rig for a grand and built a new one for $991 so i actually saved 9 bucks.
lol ill put that 9 bucks toward a directX 10 card when they become affordable, and when games begin supporting it...
either that or toward neverwinter nights 2 lol