Post your PPD rates !!

[Andreas]

OCing a 3930 and a GTX690 results in about +220W power draw (above stock) which equals about 52$/mo (GE) and 9.50$/mo (US).
is it worth it? that's entirely up to the individual
while its not enough to make me shy away from folding (or make purchases based on power consumption rather than performance desires) it is enough to say it matters. (it just doesn't matter enough to make me stop )

With these high energy prices in countries like Germany the OC argument for folding makes even less "economic" sense if the intention is to contribute for extended periods. That's why a metric like PPD/Watt would potentially help guide some guys in their choices to make.

From a folding perspective, taken your 220W increase in power draw as a base:

Option 1) OC the existing rig, take the 220W hit and get how much % as PPD improvement? probably less than 20%
Option 2) Keep your system at stock frequencies. Get an additional 660 Ti which will take about 120W when folding and gives you an almost 50% PPD increase vs. your GTX 690.

Cheers,
Andy