MSI Afterbruner.
You do not overclock video cards through the bios, it is only done in windows (essentially, you can change the GPU's bios with another program, but that isnt something a novice should be doing as you can easily end up with a paperweight).
That said its easy.
1. Give the card .05 - .1 more volts.
2. Push on the core 25Mhz, then test using 3dMark11, or Unigene Heaven (Hwbot version). If you do not see artifacts or the system doesnt freeze, rinse and repeat.
3. Once it freezes, or you see artificats, back it down 25Mhz. That is your limit on the core.
4. Memory time. Do the same thing, push 25Mhz at a time and test. Once you see artifacts, back it down 25Mhz.
^This, though I'd extend it a little, for kicks and giggles.
1) Push core 25MHz.
2) Start Unigine Heaven with these settings. Run the benchmark (F5) once.
Code:
API - DirectX 11
Tessellation - Extreme
Shaders - High
Anisotropy - 16x
Stereo 3D - Disabled
Multi monitor - Disabled
Anti-aliasing - 8x
Full screen - Enabled
Resolution - System
3) Check for artifacts, driver crashes, freezes, BSODs, high temperatures, et caetera.
a) No artifacts / no high temperature -> Go back to 1. Write down these settings on a piece of paper.
b) Artifacts or driver crash without high temperature -> Raise voltage by one notch. Go back to 1.
c) Artifacts or driver crash, voltage maxed, or high temperature -> Lower clock by 5MHz. Go to 1.
4) When you have reached your top core frequency, save the settings to a MSi Afterburner profile.
5) Run Unigine overnight. Do not run the benchmark, just let the engine demo run.
6) If the system is still alive after the testing, go stock, and go to 7. Else, lower clock by 25MHz, and go to 5.
7) Raise memory by 25MHz.
8) Steps 2 and 3. Raise memory instead of core.
9) When you have reached your top memory frequency, save the settings to another profile. Load the previous profile.
10) Set the memory speed you found as top before.
11) Run the benchmark again (Step 2).
12) Check for artifacts, driver crashes, high temperatures, et caetera.
a) No artifacts / no high temperature -> Go to 13.
b) Artifacts or driver crash without high temperature -> Lower memory clock by 10MHz. Go to 11.
13) Run Unigine overnight with the same settings. Do not run the benchmark, just let the engine demo run.
14) If the system is still alive after the testing, congratulations, save the profile, set Afterburner to overclock on system startup, and enjoy!!
Else, lower memory clock by 25MHz, and go to 11.
15) (Optional) Run 3DMark11 Advanced Xtreme overnight (tests only and loop). Try all sorts of benchmarks for stability.
FurMark is NOT recommended, though you can run it if you want to, but it will probably trigger OCP.
You can unlock "extra voltages" by modding your BIOS, but that'd require some serious VRM cooling and GPU cooling.
