The new Intel Core i7-3970X has six cores and the standard core clock of 3.5 GHz (vs. the 3.3 GHz of i7-3960X). Besides, the maximum core clock is increased by 100 GHz, reaching a psychological barrier of 4 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