OC'ing GPU Confusion

[Omie]

So I OC'ed my 1080 Strix O8G and managed to get +75 on the core clock and +300 on the memory. Firestrike fails the benchmark if the OC is set to +80 on the clock, so I settled for +75.

 

Running firestrike showed a core clock of 2101. But when I open my games, I see the core clock hit 2101 for a second but then it drops down to like 2076 and stays there.

 

Does anyone know why it's not staying at the 2101 clock that is shown by the Firestrike results?

 

I also tested without any OC on the GPU and just using its factory OC, in games it was anywhere from 2012-2038. So a +75 on the core clock would have to get me at least 2087 (2012+75) but the max I get constantly is 2076.

 

 

[captain cactus]

You're either hitting thermal limits or power limits. The first limit (thermal) you can solve with more fan RPM, but changing the power limit on any recent nVidia card is a pain. You can give it some more voltage, but at around 1.35V Pascal just shuts down. If a card needs more than that, yeah, it'll crash.

[Omie]

6 minutes ago, lots of unexplainable lag said:

You're either hitting thermal limits or power limits. The first limit (thermal) you can solve with more fan RPM, but changing the power limit on any recent nVidia card is a pain. You can give it some more voltage, but at around 1.35V Pascal just shuts down. If a card needs more than that, yeah, it'll crash.

My GPU temps are fine. It never even gets to 70 degrees under load. In afterburner I also increased the temp and power limits to the max but did not add any voltage.