consequence of overclocking gpu other than overheating?

Hey guys, i was wondering is there are other consequences to overclocking gpu other than overheating. Also, I overclocked my 8600m gs to maximum and its running at 75 degrees on a 14.1 laptop. Do you guys think that is stable or should I put it down a bit? I usually just overclock the card enough to play sf4 at the minimum resolution, at 71 degrees. Is the 4 extra degrees worth it?

also 1 more question, is it bad to unlink the core clock and shader clock? my max core clock is only 636 but my shader clock can be overclocked to its maximum. Is it safe to unlink these clocks?

thank you, any idea is appreciated

 

I could be wrong but I think overclocking continually for long periods of time can slightly affect the overall longevity of the component. But I usually swap hardware every 2-3 years so it doesn't matter to me.

 

As long as you don't touch voltages, what is said is what is to be considered.
If you touch voltages, you can permanently damaged the GPU and other components.

 

Out of curiosity, what program are you using for overclocking?

 

There are only benefits in moderate overclocking ;-) If you keep your laptop cool when you do so of course. That's rule number one.

 

technically you could say that wear would increase by the %frequency you had upped the clocks by, but at nominal voltages I doubt the lifespan of the parts would come even remotely close to the time you use it for.

 

rivatuner

so is it bad to unlink the core/shader clocks ? My shadow clock can be oc'd way more than the core.

 

Riva tuner does not provide proper overclocking for mobile cards. You'll want to look more at nVidia System Tools.
Like everybody said, so long as you don't change voltages (which can only be done by flashing the vBIOS), you'll be fine. Start overclocking by raising the frequency 15-20mhz at a time, until either you BSOD or reach 90C on the GPU using furmark or another gpu benchmark. If you BSOD first, pull the frequency down a good 25mhz and test that for a while. If you hit 90C first, pull down the frequencies again till you max around 80-85C. Thats the sweet spot for max frequency and longevity, Anything higher than 85C and you risk shortening the life of the card.

Its not bad to unlock them. However, for testing, find the core:shader ratio. For mine, its 1:2.5. 500mhz core : 1250Mhz Shader = 2.5 : 1. So keep the ratio the same till you find the sweet spot, then try moving one or the other up to further tweak things.

Memory overclocking offers the smallest performance gain, and is usually the first component on a GPU to fry from OC. In my experience, its not worth taking it up more than 75mhz. Or nothing at all. Keep it stock.

 

+1 emike09

Check my signature for a quick guide in using Nvidia System tools.

 

It should be remember when overclocking that the temperature you are measuring is the GPU's processor, not the memory, reason to have more care when trying to increase the memory clocks.

 

That's why i only OC core and shaders now. It causes less trouble and is more stable.