*bows.
Danke, danke.
You're bumping it to $650 now?
You just screwed up all my calculations...
Well, you could upgrade the i3 to an i5-2500 for $209.99 + free shipping, of course. O, and it includes a free Blu-ray burner, those things usually cost about $100.
So that's a grand total of $583.93.
-Other considerations-
So... that leaves $66.07 to spare to maybe... get a better graphics card. Bump the GTX 550 Ti up to a HD 6850. Or maybe upgrade the motherboard to a P67.
Or both.
Your choice.