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Thread Starter 
I'm using the Extreme Tuner, but everytime I try to raise the Graphics Current Limit or Additional Processors Graphic Voltage and reboot it always comes out as "failed to apply." I have no idea why it does this. Here's what I use.

Windows 7 64-bit
8 GB Ram 1600mhz G-Skill Sniper
1.5 TB 7200 RPM HDD
I7 3770k CPU w/ IGP (HD 4000)
750 watt PSU 2 volt rails.

Trying to OC this, because I'm waiting on my GPU.