"Intel launched this month their new CPUs based on the "Sandy Bridge" architecture. Let's check the performance of the new Core i7-2600K (3.4 GHz) and compare it to the CPU it came to replace, the Core i7-875K (2.93 GHz), and to the most expensive CPU from AMD, the Phenom II X6 1100T (3.3 GHz)."
Any major computer upgrade generally requires a full software reinstall too. No so if you heed the advice in the guide to Upgrading a Motherboard without Reinstalling. PCSTATS Tips