You can build a pretty beastly rig for one grand.
Lesse here, the hard drive. Around 100 for 1-2 tb.
30 for the dvd drive
100 for the PSU
lets go 80 for the case, since we're on a budget.
And an i5 system, and if you REALLY wanna save, lg 775. For gaming, the gpu is really what matters
So cpu+motherboard. 350-400, let's go with 400. you can find i7 920's for 200 on ebay. Then 200 bucks for the mobo.
Ram, 4 gigs....
http://www.newegg.com/Product/Produc...e=&srchInDesc=
So 120 bucks
Let's assume stock coolers, since the i7 ones aren't too shabby. (but if you plan on overclocking, get a good one. I got the h50 for 59 bucks at local best buy, which was a killer deal)
Operating system. Hehe, gray area. Free or 70 bucks with student license. Let's say 70 bucks.
So what are we at so far?
100
30
100
80
400
120
=
830.
That gives us 170 for a graphics card.
I would suggest an ati 5770, but you insist on nvidia. The problem is, there isn't any 400 series for that price (yet). You'd have to go with the gtx 260.
HOWEVER, we can cut down on the cpu+mobo.
I just checked, i7 920 can be had for 225 on ebay, as listed. You can also go for "Or best offer" and probably get it down to 200. Then use bing cashback for 16 bucks back. So we'd be at 184 bucks. Hmmmmm....okay the motherboard isn't gonna go down much.
1366 is just pricier.
If you want to go i5, you can save maybe a 100 bucks. And save another hundred for last gen dual core (probably even more than that). In gaming, a dual core is usually gonna be plenty. TBH, my upgrade to a pricey i7 and quality mobo+ ram only gave me 4-5 extra fps on crysis.
So if you REALLY wanna go low, find these things on ebay. I'm guessing with bing cashback+"obo" and the low prices, you can cut 100-150 bucks off. Then add these to the vid card, for $330 and BAM! gtx 470!!!!
Of course, if the 470 is all you want, then you can go for a smaller hard drive, save 20-30 bucks, rosewill brand psu (haven't had any problems with mine) for maybe 20-40 bucks less, even CHEAPER case. Like the Antec 300. You can find killer deals on those for under 50. So that's another 30-50 off.
If you cut enough corners, then BAM, gtx 480! \o/
All for under 1000