Overclocking the Gigabyte geforce gtx 660 ti

LexGaming76

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Dec 28, 2013
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10,510
Hi Im kinda new to overclocking GPU's and Im having trouble finding the right set of oc settings on Asus tweak and I've been using Furmark 3d and I run it on 1080p and it lags a lot and I dont know a lot about boost clock, base clock, etc. So if anyone can help, that'll be great! Also I have not touched the sliders because I'm trying to be cautious by not knowing a lot about this.
 
Solution


No problem!

If I helped please select as solution. :)
Base Clock: Minimum clock the GPU will run at
Boost Clock: Clock speed that GPU will boost to in demanding scenarios.

Usually when you overclock, you must be very careful of adjusting settings. I recommend using PrecisionX or MSI Afterburner for overclocking.

PrecisionX: http://www.evga.com/precision/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+EvgaNewsRssFeed+(EVGA+News+RSS+Feed)

MSI Afterburner: http://event.msi.com/vga/afterburner/download.htm

These tools will allow you to change the base clock speed, memory clock speed, power limit, etc.

So, let's walk through what;s going to happen.

1) The most important part of GPU overclocking (and most beneficial TO overclock) is the core clock. That will determine the speed at which your GPU operates. So, what is a good idea to do is add 10 MHZ to the core (or base) clock speed and then stress test. FurMark is a good stress tester. After about 10 Minutes of stress testing you can move on.

2) Keep adding MHZ in increments of 10 (stress testing every time you do so) until the card starts crashing or having issues.

*KEEP IN MIND. WATCH THE TEMPERATURES. MAKE SURE THEY DONT GET TOO HIGH!*

3) Once you have reached a point where the GPU starts crashing, back off the clock speed by about 10-15mhz and then stress test for about 1-2 hours to ensure stability. If all goes well, it is a stable overclock!

Once again, I recommend MSI Afterburner for overclocking as that is what I use.
 


Memory clock literally has a very small impact on overall performance. Core clock is much more beneficial to overclock. For example, 200mhz memory overclock is equivalent of performance increase as 10Mhz core clock. So memory clock is a sort of an afterthought in overclocking.

For memory clock you can go much higher overclock than core, but you can do that in increments of 20-30 AFTER you found a good core clock.

As far as voltage goes, it depends on your card. Some offer ability to overvolt, (allows for more stability at higher clocks), but it will generate more heat and increased power consumption. My card lets me overvolt by 12mV, so I just put it at max to get the most out of it. (12mV is very little. About 1% of the 1200mV the card recieves.) Some cards are unlocked and allow unlimited overvolting so you have to be careful not to push it too hard.

Generally you can go up by 5mV at a time. But remember, you want to get the most clock speed for the least voltage. So don't just over volt unless you want to add more clock speed. The increased voltage will add stability.