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cpu I5 2400 I5-2400 3.1GHz/ 6MB Socket LGA 1155 CPU Processor HD 2000 Supported Memory: DDR3-1066, DDR3-1333 Run quickly to help you run your computer : Amazon.co.uk: Computers & Accessories
Intel Core I7-3770 LGA 1155 CPU Processor 3.40GHz Up To 3.9GHz 8MB Quad Core | eBay
Beginners Guide: How To Install/Remove Intel Socket LGA1155 CPU and Heatsink - PCSTATS.com