MSI Afterburner Voltage Problems

[dibthelegend]

After researching a bit about increasing the voltage of your gpu to achieve a higher clock, I figured I might as well try increasing it just a small amount to test the waters. I have a GTX 660 that I OC'ed to 1188MHz on the gpu with the out-of-the-box voltage of 1.175. I increased the voltage in afterburner by 12. But when I ran the MSI Kombuster benchmark, the voltage fluctuated heavily between ~0.87 and ~1.15 and then crashed my display driver about 4 seconds later. I tried checking the option to force constant voltage, but to no success. I have a hard time believing that such a minor voltage increase could cause such horrific instability, but that's why I'm asking for help. Here's my profile prior to changing core voltage:

 

 

 

[luke_2bossly]

After researching a bit about increasing the voltage of your gpu to achieve a higher clock, I figured I might as well try increasing it just a small amount to test the waters. I have a GTX 660 that I OC'ed to 1188MHz on the gpu with the out-of-the-box voltage of 1.175. I increased the voltage in afterburner by 12. But when I ran the MSI Kombuster benchmark, the voltage fluctuated heavily between ~0.87 and ~1.15 and then crashed my display driver about 4 seconds later. I tried checking the option to force constant voltage, but to no success. I have a hard time believing that such a minor voltage increase could cause such horrific instability, but that's why I'm asking for help. Here's my profile prior to changing core voltage:

 

 

 

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How do you get the power limit to 119??? Mine doesnt slide past 110??? where is that setting?

[dibthelegend]

I didn't do anything special, i'd assume Afterburner just gives you what your card/system is capable of. I just maxed it because it occasionally gets to ~112% TDP