From a desktop component perspective, Haswell has impressed me with the Core i7-4770K. I honestly wasn`t expecting as much CPU performance increase with this release but seeing our benchmarks scale from 5-15% (sometimes higher) from the 3770K to the 4770K makes it pretty clear that if you are building a new system today and you aren`t considering the $1000 CPU options, Haswell is the route to go."
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