Or more specifically I’ll be explaining overclocking the:
- HD 7670M
- AMD A6-3420M
This guide comes with absoulutely no warranty. This may damage your hardware, it will void your warranty, follow this guide at your own risk.
Overclocking the A6-3420M
Because the APU is much easier to overclock than the GPU, that’s what I’m going to explain first. The first thing you should do is update AMD Vision Engine (Shortened to AVE), you can do so with this.
The next thing you should do is open AVE (Right-click your desktop, click “Graphics Properties”). In AVE, click “Preferences” in the top-right, and select “Advanced View”. In the left pane, click “Performance » AMD OverDrive”.
Now that you’re in the AMD OverDrive settings, click “Overrride existing CPU settings”, then click “Auto-Tune”. At any point if it asks you if you’re sure, or it explains that doing so will void your warranty, agree if you wish. After Auto-Tune is finished, enable AMD OverDrive (On the OverDrive pane, there will be a slider at the bottom, to the top-left of the slider should be a big button, click it so it’s green). You should have options all the way up to 1.9GhZ (At least, anyways), this does not effect “turbo” (You can download the full version of AMD OverDrive to do that if you wish, I will not be covering that), I set mine to 1.7GhZ because I found 1.9GhZ (and 1.8GhZ) ran a little too hot.
Congratulations! You’ve just overclocked your 3420M!
Overclocking the HD 7670M
(If you haven’t updated AVE, do that now) First thing to do is install MSI Afterburner (If you prefer Sapphire TRIXX, that works too, I won’t be covering it though), you can get a copy of it here. Next, make sure Afterburner and AVE are closed before proceeding (You may wish to reboot your computer).
First thing to do is open regedit (Start » “regedit”). Hit “Edit » Find”, and type in “enableulps”, search. Wait for it to complete, after it finds it, double-click “enableulps” and change it’s value from 1 to 0. Hit “F6” to find the next entry of “enableulps”, it probably won’t find one but do it just to be safe.
Now open the folder Afterburner installed to (Probably “C:\Program Files (x86)\MSI Afterburner”) and open “MSIAfterburner.cfg”, in Notepad. Find the line that says “UnofficialOverclockingEULA =”, and add “ I confirm that I am aware of unofficial overclocking limitations and fully understand that MSI will not provide me any support on it” to the end of it. Next, the line below it “UnofficialOverclockingMode”, change to “0” to a “1”. Now reboot your computer (This is required to disable ulps, which is required to use AfterBurner, if you don’t do this, you may need to do the regedit step again).
Now run Afterburner (Start » All Programs » MSI Afterburner » MSI Afterburner). Set “Core Clock” to “700”, and “Memory Clock” to “1050”, then hit “Apply”. Next click “Save”, then click the first profile. Now your GPU should run (While gaming) at about 66-68 Celcius, capping at 70. It may run hotter depending on what game you’re playing, I tested this with Diablo III (Which ran my GPU at a max of 88% so it can likely get warmer), it should cool down to as low as 43 within 20mins of little-no use, 50 in 5mins of little-no use, and 53-54 in 1-2mins of little-no use.
If you have an issue regarding “ulps”, reboot your computer (Make sure MSI Afterburner isn’t set to start on startup first), and go back to the regedit step. If you can’t raise your clocks beyond the stock, close Afterburner (or reboot your computer, and make sure it doesn’t start on startup) and go back to the Afterburner configuration step.
Congratulations! You’ve just overclocked your 7670M!