Good news you won't even have to spend all that money, if you're re-using parts.
But what you intend to do with PC?
Please, fill out those questions, otherwise it's gonna take too long asking you those question one by one. Post answers here. Thanks http://www.tomshardware.co.uk/forum/353572-13-build-upg...
CPU: Intel Core i5-3470 3.2GHz Quad-Core Processor ($184.99 @ Newegg)
Motherboard: ASRock H77 Pro4/MVP ATX LGA1155 Motherboard ($87.55 @ Newegg)
Memory: G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-1600 Memory ($39.99 @ Newegg)
Storage: Western Digital Caviar Black 1TB 3.5" 7200RPM Internal Hard Drive ($95.41 @ Amazon)
Storage: Samsung 830 Series 128GB 2.5" Solid State Disk ($109.99 @ Newegg)
Video Card: Sapphire Radeon HD 7870 2GB Video Card ($268.00 @ Amazon)
Case: NZXT Phantom 410 (Black) ATX Mid Tower Case ($94.99 @ Amazon)
Power Supply: SeaSonic X Series 560W 80 PLUS Gold Certified ATX12V / EPS12V Power Supply ($135.71 @ Newegg)
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2012-11-15 04:16 EST-0500)
PSU is kinda expensive but it will last, and because you have the money to spend, it's better not to skimp on PSU
You may be just fine withouth overclocking, but i'll do build for that too.
This build has SSD which will load everything faster than HDD.
Actual price is lower, you have to minus HDD cost, because you already have one