Hi guys, I have a EVGA 750 Ti SC 2GB card and did the bios power mod and noticed something quite interesting. I run 24/7 stable with no errors on +25 GPU and +500 MEM using precision x on win 7 x64.
My previous config I was using for my batch file based on reading forum posts was "cudaminer -a scrypt -o server -u user -p pass -l T5x24 -m 1 -C 1 -H 2 and was getting 295-297 kh/s stable. This got me full gpu being utilized and memory on card.
I did some more reading last night and switched to launch config of -l T10x24 and I now get between 310-312 kh/s 24/7 stable with same exact settings. The craziest thing is that when I check my precision x software it only shows GPU utilization at 540 mhz compared to the full 1344 mhz of the prior launch config. It's running faster at less GPU load and getting proper accepts!
I think this GPU has more untapped mining potential when we get actual maxwell launch configs and cuda 6 optimizations. Nvidia's mining future is looking brighter and brighter.
I noticed the same thing on mine, but I'm pretty sure it was because I previously had my overclock too high and one of the cards stopped reporting hashes. I restarted mining and they both started working again at those power usage levels for some reason. I could have just changed the 10x24 back to 5x24 at the same time, but I don't think I did. Will have to do testing later.
I will note that even with the clocks reporting like that, my card still showed 88-95% usage and spikes up to 100 or more at times. It was a lot smoother running 10x24 on my msi cards without 6pin power though. It was roughly the same hash as 5x24 I think, maybe a little lower. The difference was it was more consistent because I don't think it made the card throttle up and down from hitting the limit so much.