Micro Center offers the Intel Core i5-2500K Quad-Core 3.3GHz LGA 1155 Sandy Bridge Processor, model no. BX80623I52500K, for $139.99 plus $5.99 for shipping. Outside of a pre-Black Friday mention where we saw it for $46 less but with pickup only, that's the best price we've seen for this processor. (It's also a current price low by $65.) Sales tax is added where applicable. This processor is compatible with Socket LGA 1155 motherboards and features Turbo Boost to 3.7GHz, an integrated graphics chip, 256KB of L2 cache per core, 6MB of L3 cache, fan, and more.