I'm surprised that people here are impressed with this. The memory clock is mediocre at best. I can easily get mine to 1100, most GTS can do it without a voltmod... Plus, the memory modules get damaged over time with frequencies over 1000MHz...
Plus, 800MHz is really not that great of an overclock for a voltmod. I can get mine to 785 with stock voltage, and I've hit 800 with the initial drivers, but the driver performance is a little bit poorer, so it's a trade-off. Not really imprssed at all with this... and he's charging $500? What a rip!