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750 TI Superclock - Overclocking, what am I doing wrong?

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  • Overclocking
  • Graphics Cards
Last response: in Overclocking
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April 16, 2014 1:46:46 PM

I just got an EVGA GTX 750 TI SC. I can get almost 60 fps in rFactor 2 with must things turned up to max, so I thought if I overclocked it a bit it should stabilize.

Using EVGA Precision X, I applied a +200 Mhz GPU clock offset and a +400Mhz memory clock offset, along with bumping up the voltage to the maximum of +31mV. I found these changes on a review of the GTX 750 TI FTW, which is almost identical except it has a 6 pin power connector that the reviewer was NOT using.

After applying those changes, they were reflected in TechPowerUp, but when I started rFactor my framerate was suddenly in the 20s even with the exact same car/track/settings combination.

The framerate was only fixed once I reset Precision X to the defaults and rebooted the system. What did I do wrong?

Edit: For those with this card interested in my solution, after learning that the memory clock could be pushed much higher than the gpu clock, I've settled on +75MHz on the GPU clock and +650MHz on the memory clock. The post I saw had +80/+700 so there is some wiggle room there, if you're lucky.

Thanks all!

More about : 750 superclock overclocking wrong

April 16, 2014 1:55:27 PM

It's possible that because of the overclocking the card started to heat up.
If the heat reached a certain thermal limit, the card would automatically downclock in order to save itself from melting into oblivion. If you're interested in overclocking, make sure to do it in smaller increments. Don't believe that just because a reviewer was able to get a certain overclock you will be able to. Each card is different and will overclock differently.
Good luck!
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April 16, 2014 2:05:39 PM

noahhicks said:
It's possible that because of the overclocking the card started to heat up.
If the heat reached a certain thermal limit, the card would automatically downclock in order to save itself from melting into oblivion. If you're interested in overclocking, make sure to do it in smaller increments. Don't believe that just because a reviewer was able to get a certain overclock you will be able to. Each card is different and will overclock differently.
Good luck!


I should note that I was keeping an eye on the temps and it never got above 40 C. Since the 750TI only uses the PCI slot power (no external connectors), that should mean it won't get as hot, correct? Additionally, the framerate was in the 20s right from the minute the game loaded, it did not slow down after a period of use which I imagine would be indicative of overheating?
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April 16, 2014 2:13:26 PM

Okay, good info, so overheating isn't the problem.
But somehow, overclocking is...

Try stepping back the overclocking, and running stress tests, until you find a stable overclock. Like I said, it wont be exactly the same as someone else unless you were using literally the exact same card (The reviewer mailed it to you after the review was finished).
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April 16, 2014 2:29:31 PM

noahhicks said:
Okay, good info, so overheating isn't the problem.
But somehow, overclocking is...

Try stepping back the overclocking, and running stress tests, until you find a stable overclock. Like I said, it wont be exactly the same as someone else unless you were using literally the exact same card (The reviewer mailed it to you after the review was finished).



Oops, I accidentally hit 'best answer'. Not solved yet! Any way to undo that?

I went through in increments, adjusting both clocks at once. I got to +75/+75 for gpu/mem clock with no problems. Then I tried +100/+100 which brought me back to the 20ish fps. However, I tried going back to +75/+75 and it was still in the 20s. Does this seem normal? A reboot should fix it but I don't know why the damage is permanent til I reboot it, shouldn't changing the clock values back fix it?

Edit: Alright, after more tweaking and learning that the mem clock could be pushed much further than the gpu clock, I've found what appear to be stable settings. Thanks very much for the help!
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April 22, 2014 10:23:43 PM

Not to be a dick, but to the OP, the reviewer HAD to be using the 6-pin power plug, i have a 750 ti ftw and it will not boot without using the 6-pin power plug. Just clearing that up incase anyone read this and maybe bought that card thinking that. Hope you get everything set up the way you want.
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