Marshall-Mathers wrote

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NV_Lobbys wrote

Marshall-Mathers wrote

NV_Lobbys wrote

Marshall-Mathers wrote

NV_Lobbys wrote

Marshall-Mathers wrote

NV_Lobbys wrote It's not hard, just open up Afterburner, find something that says "Core Clock (Mhz)",the number next to it should say 775. All you need to do now is double click on the 775 and type in the number you want to overclock to (You can also use the slider, but I think it's easier to just type in the number). I'd suggest only increasing the clock speed 10Mhz at a time to avoid any damage or issues. To get the most out of it, simply increase the number +10Mhz, and run a stress tester and see if it holds up.
If everything runs smoothly, up it another 10Mhz and repeat the process until you run into instability.

So, lets say you overclocked from 775Mhz, to 810Mhz whenever you receive a BSOD instability or crashes, all you need to do is reboot the system, turn down the clock speed to 800Mhz or decrease it about 10Mhz and continue to use the system like normal. If it runs smoothly an does not have any issues, you have found what is called your "sweet spot".

More accurate intervals would be 100 each time. After your first freeze, decrease the previous number by 50 and try.

Are you kidding? You're going to smoke your GPU doing that.

I'm not kidding. I've overclocked cards many times before, and he will not get anywhere by overclocking 10 mhz at a time then benchmarking.

Well I wouldn't risk my GPU overclocking to those extremes.

That's hardly extreme. I've overclocked my card from 960 to 1350. Nonetheless, no damage will be done to the card unless you overvolt it.

What I mean't be "extreme" was upping it 100Mhz at a time, not the actual clock speed it is overclocked to.

It's not extreme in the slightest. Bumping up by 10 is a waste of time.

I, personally, up it 50Mhz-75Mhz at a time, but this thread isn't for experienced overclockers who know how much is enough. For a beginner, one who doesn't have a high end card, should start off small, and then make their way up to bigger numbers. I fully understand where your coming from, but there is an obvious difference in knowledge between you and OP.

I see no mention of Vcore, memory clock, or Furmark.

If you're not over-volting, it's easy, just find the max core clock you can run stable. At stock voltage, heat shouldn't even be an issue because although higher clock speeds create more heat, voltage increases create a lot more heat (very basic explanation). There's nothing wrong with starting with 100 MHz increases because if you set something too high, the test will simply crash and you will not damage your hardware. A crash will indicate that you've set your OC too high, so if you were using 100 MHz increases, decrease the speed by 50 MHz and run the test again. If it's still unstable, decrease the clock by 25 MHz. If the stability test fails again, decrease the clock by 10 MHz. Once you get a successful test, see if it's still stable if you increase the clock speed by half of your previous increment.

See where I'm going with this? You're trying to find the highest stable clock speed that your Vcore will allow. This is different for every card/chip, so this process is the quickest way to find the sweet spot.

Whenever you change the clock speed, run a Furmark test to test for stability. If the test fails in any way (BSOD, error, card shutdown), don't be alarmed or surprised, it just means your overclock is not stable and you need to set it lower. Watch the temperature and don't worry about it unless it's around 90C; GPUs can take the heat and no game should be able to get your card as hot as Furmark. If your card gets too hot, it will automatically shut off to prevent hardware damage (just restart your PC). I suggest the 15-minute 1080p "Burn-in benchmark" for testing.

Once you've found your "sweet-spot," play some games. This will also test for stability issues that may not have been evident in the Furmark burn-in test. Don't worry about the memory clock, but you can give it a little bump if you want. It will probably be 900 at stock.

I wouldn't expect too much out of the GT 630 so I'd begin with 50 MHz increments.

EDIT: Forgot to mention that you'll need an OC tool like Afterburner: [ Register or Signin to view external links. ]

Furmark: [ Register or Signin to view external links. ]