We recently found that the GeForce GTX 660 Ti generally outperforms the Radeon HD 7950 in our latency-focused tests in many of the latest games, despite the fact that the Radeon is based on decidedly beefier hardware. We concluded that AMD has work to do in optimizing its drivers for the latest games. Now comes confirmation from AMD that software is to blame for some of the latency issues, along with word of planned fixes, including a rewrite of the GCN memory management software. "
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