MicroCenter.com has the Intel Core i5-2500K Sandy Bridge 3.3GHz (3.7GHz Turbo Boost) 4 x 256KB LGA 1155 95W Quad-Core Desktop Processor (BX80623I52500K) for
$100 with free in-store pickup only. This 95W 32nm CPU features 6MB of L3 Cache, Hyper-threading, and a 3.3GHz clock speed.