NOTE all 5660 usersI have been testing Powerstrip with my 5660 and I here is the report :-
1] With the drivers that came with the system I was scoring 6700 on the 3DMark 2001 SE
2] Found that the 5660's were shipping underclocked and therefore used Powerstrip to up the DDR to 182 and now I was scoring a comfortable 7280 on the 3DMark 2001 SE
3] With the factory settings I was getting between 50 and 100 fps in Hitman 2 Silent Assassin.
4] With the Powerstrip settings I was getting between 80 and 120 in Hitman 2 Silent Assassin.
5] With the factory settings I had the fans coming on and off at regular intervals and operation was silent.
6] With Powerstrip installed the fans were on more often than off and operation was a little more noisier.
7] With the factory settings the system never crashed in the 2 weeks I had the factorry setting.
8] With Powerstrip installed the system has crashed 4 times and each time the error reported was "Powerstrip failed to shutdown correctly" and was caused by closing windows, opening games, changing powerstrip settings etc..
9] So far no game has played badly on the factory settings and I reason that Sager fixed it underclocked for some reason.
I have uninstalled Powerstrip and cleaned out my registry to remove all traces of it. I will not use it until and unless my games start to stutter - which I dont expect will happen with the current generation of games.
I advise all those using Powerstrip on the 5660's that shipped underclocked to refrain from using it in the future. Remove this software and clear out your registry. You dont need it for the current crop of games and you may be voiding your warranty by using it and overclocking your GPU to 182!!!
Play it safe and stay happy - the crashing really pissed me off so it had to GO