HD6770 added a few weeks ago. Hoping to start adding a few GTX580 at the end of the year or early next year (on my new dedicated folding machine). 553
Just replaced my HD6770 with a GTX570 (overclocked of course!). Count remains the same, but I wanted to share my good fortune Current estimate (at 10% into my first wu with stable overclock) is just over 34K ppd, and it hasn't affected how much of the CPU is available for smp! 550