After studying Haswell`s architecture and taking the chip through our benchmark suite, we gave overclocking a shot. Our findings suggest that Haswell requires beefier cooling to overclock than the previous generation, and it may have less clock headroom, as well."
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