So my mom wants a computer, decided to take advantage and make a rig where I can fold while she uses the computer. Woot JOIN THE THGC FOLDING@HOME TEAM! Anyway, I was looking at some items and with a $700 or $750 (750 is kind of pushing it). I have some items already picked out so I was going to look for some input and if you can find a cheaper setup.

CPU/MOBO: Intel i3 540 - Gigabyte GA-H57M-USB3 Combo: $221.98 (Justification for the 540, it's just 10$ more than the 530 so I might as well get something I can make sure I will hit 4.0ghz)
http://www.newegg.com/Product/ComboDealDetails.aspx?ItemList=Combo.487205

PSU/Case: XFX 650W XXX edition Modular - Lian-Li Lancool PC-K62 $169.98
http://www.newegg.com/Product/ComboDealDetails.aspx?ItemList=Combo.492974

GPU: Gigabyte GTX 460 768MB $189.99
http://www.newegg.com/Product/Product.aspx?Item=N82E16814125334

Mushkin Enhanced Blackline DDR3 1600 (PC3 12800) 4GB (2GBx2) Dual Channel:
http://www.newegg.com/Product/Product.aspx?Item=N82E16820226103

HDD: Samsung Spinpoint F4 - 320GB $42.99
http://www.newegg.com/Product/Product.aspx?Item=N82E16822152244

Subtotal: $719.93
Shipping: $16.83
Promo code- XFXPOWER: -$18.00

Total cost: $718.75

Input please?