"After trying out both the Intel Pentium G620 and Pentium G850 we must admit that we are still impressed by what these cost effective mainstream processors can do. Thanks to the powerful Intel 'Sandy Bridge' microarchitecture these dual-core processors don't run too far behind the more expensive offerings from Intel and AMD. You can find some pretty good deals on LGA775 and LGA1156 platforms right now, but the Intel Pentium series for LGA1155 has more features and as you could see in the performance tests they weren't that far behind in the benchmarks..."
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