http://www.ebay.com/itm/Acer-Aspire-M-T-AME600-UR378-PC-Desktop-i7-3770-Quad-Core-3-4GHz-10GB-2TB-WiFi-/251368114490?pt=Desktop_PCs&hash=item3a86b5093a
this one probably. $519
or
http://www.ebay.com/itm/Intel-i7-3770K-Custom-Gaming-Desktop-PC-Computer-3-9GHz-Fast-HD-DVI-4GB-400GB-/261178298734?pt=Desktop_PCs&hash=item3ccf70916e
$560