While we are not entirely convinced that the GeForce GTX 550 Ti is a worthy contender at $149 US, Gigabyte certainly has done a lot to improve its value. When compared to the Radeon HD 6850 which was consistently much faster, the GeForce GTX 550 Ti costs just 15% less despite being around 30% slower most of the time.
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