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Overclocking limits 780 TI 2x

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  • Overclocking
Last response: in Overclocking
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September 14, 2014 1:16:56 PM

I decided to check what my computer is capable of. I ran couple of benchmarks in Heaven to see the score and I was kind of happy when I managed to get a nice score. I overclocked my 2x ZOTAC 780 TI OC to 1080 core clock and 1825 memory clock. (base 941 core clock, 1750 memory clock). It works fine, but when I increased the core clock to 1090 and then ran the Heaven benchmark, the computer kind of "froze". I stopped hearing the fans spinning as fast immediately after the screen went black. Music was still playing in the background, but CTRL+ALT+DEL or ALt+F4 didn't work, I also tried to turn off the PC by pressing the power button but nothing happened, so I had to unplug the computer from the wall. I tried the benchmark this way 3 times and I unfortunately had to unplug the PC from the wall three times. The main questions are...

Will unplugging the computer from the wall cause damage to my PC? I haven't noticed any differences when I turned in on again.

Did I reach the maximum clocks that my graphic cards can handle without increasing voltage? I assume the black screen appeared simply because the graphic cards couldn't handle the overclock for longer than 3 minutes. Does it mean, I have to increase voltage to be able to overclock it even higher? There's no point in overclocking it, but it'd be great to know.

More about : overclocking limits 780

September 14, 2014 1:54:54 PM

Overclocking a SLI setup isnt safe because SLI takes a lot of power an produce a decent heat output. It's maybe be an overheat that caused that crash.
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September 14, 2014 1:58:47 PM

I've got tons of fans, and the screen turned off only when I increased the core clock from 1080 (stable) to 1090. The benchmark ran for about 3 minutes, and the screen turned black. The heat isn't a problem, since I monitor it all the time and it never surpasses 80 degrees celcius. I had to unplug the PC from the wall, and now I'm testing the drive that has Windows on to see if there's no damage or corrupt files. I just wanted to know whether this is normal, and everything should be fine. Apparently, it all depends on the quality of PSU.
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