Well made some progress on the evga gtx260 196sp card.
Its really a tricky little beast. So that resister I changed out with at first a 75kohm one which lowered the resistance to roughly 70kohm. This helped a tad as in I could raise voltages but it would still screen out after a bit. I then slapped a 37kohm resister on there which lowered output to 27kohm. This helped alot but its still not a final finish I dont think.
Regardless Im not sure exactly what it is but over 1.30vgpu (as read with MM) and it will lower clocks in benchmarks. If I stay under that it seems to do ok.
Im testing now with the highest clock Ive gotten so far. 837core, 1674 shader and like 1300 ram. I may add that before this mod I couldnt get 750core to complete a benchmark and above 1.20vgpu would cause a screen out.
The screeching is still present but if i stay under 1.32vgpu it is relatively quiet. If I go above that it sounds like it did at stock without the cap mods running 1.18vgpu so that is definatly a plus.
I think I found some more spots for caps but Im not sure. I checked with the short function on my MM and these circled points go to the same locations that the allready capped locations do.
Oh and I would like to add, if anyone knows how to force it to run allways at its top clocks I would appreciate some help. Im kind of fighting two fronts here. One issue is the OCP which I think Ive pretty much solved. The other is that these cards when they detect instability somewhere they downclock themselves. I know you can edit the bios somewhere (hexedit basically) but everyone Ive found for these cards doesnt match my bios exactly. Also if you change in the bios for all three settings to have the same clocks it distorts the screen on windows boot so basically it doesnt like it, even with the associated votlages adjusted.
Edited by MADMAX22 - 1/26/10 at 12:22am