Those debating between the Core i7-3820 and the Core i7-2700K then have to decide if the added memory support and additional PCIe bandwidth are worth the added cost. If you are a heavy multi-GPU user then that might be the case, otherwise we are kind of at a standstill. Motherboards based on the Z68 platform available now should be able to support Ivy Bridge in the coming months but in truth we don`t expect the processor portion of that upgrade to be particularly noteworthy - only the GPU side of the processor will see significant jumps. On the other hand, Ivy Bridge-E may or may not even actually use the LGA2011 socket, as Intel hasn`t confirmed, though all indicators show that it will."
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