For an everyday normal usage, Facebook, web browsing, and other normal everyday stuff, you really don't need more than that for a long long time :
PCPartPicker part list:
http://pcpartpicker.com/p/3fek8
Price breakdown by merchant: http://pcpartpicker.com/p/3fek8/by_merchant/
Benchmarks: http://pcpartpicker.com/p/3fek8/benchmarks/
CPU: AMD A10-6790K 4.0GHz Quad-Core Processor ($109.99 @ NCIX US)
Motherboard: MSI FM2-A75MA-E35 Micro ATX FM2 Motherboard ($57.78 @ Newegg)
Memory: G.Skill Ares Series 8GB (2 x 4GB) DDR3-1600 Memory ($64.99 @ Newegg)
Storage: Samsung 840 EVO 120GB 2.5" Solid State Disk ($80.99 @ Amazon)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($59.23 @ OutletPC)
Case: Corsair 200R ATX Mid Tower Case ($44.00 @ Newegg)
Power Supply: XFX 550W 80+ Bronze Certified ATX Power Supply ($44.99 @ NCIX US)
Total: $461.97
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-03-23 19:54 EDT-0400)