750 Ti drops off to 850MHz when overclocking

[joe_theunknowing]

While I'm overclocking my 750 Ti in after burner (currently +100 MHz) occasionally drops of to 850MHz when I'm bench-marking in Heaven, any explanation for this? 

[PlayStation 2]

thermal throttling?

[joe_theunknowing]

thermal throttling?

I wouldn't think so because it's never risen higher than 70 Celsius 

[AresKrieger]

Does it do this during the more or less intensive portions of Heaven? AKA whats the fps when it drops down

[SonoDanshi]

If it happens during scene transitions then it is simply down-clocking because it doesn't need to be at full load for the fade out/in between scenes.

[PlayStation 2]

I wouldn't think so because it's never risen higher than 70 Celsius 

what 750 ti? and brand?

[JaZoN_XD]

Sometimes this happens because of a driver glitch. Reset the driver by disabling and then re-enabling in device manager. It will most likely fix the problem.

 

(I had this problem before, the core clock would randomly drop down to 550MHZ when using intense program such as a benchmark or a game)

[CaptainPebbleDash]

It's hard to go off what you've only said due to the things it can be. 

 

With heaven you normally get a general dip in 'performance' when transitioning onto the next scene. It could be a cpu bottleneck, thermal limits, the card not having to work as hard at the select point etc.

 

My GPU will still downclock from 1.4ish to 1350ish if it doesn't need that amount of core speed, as it's a waste of power and heat.  

[joe_theunknowing]

Just ran it again and this time it didn't drop off which is odd, anyway this is the one I bought https://www.techpowerup.com/gpudb/b2768/msi-gtx-750-ti-oc.html

 

According to afterburner it hover between 1315 and 1306 the whole test.

[arniks8]

Maybe a TDP limit? Your card has TDP of 60w and PCI-E can only provide maximum of 75w.