GTX 780 Ti DC2 Overclocking problem

[alexfsr]

I'm trying to overclock my GTX 780Ti from Asus with MSI Afterburner and Asus GPU Tweak. I'm new to GPU overclocking and i'm running into some problems already. The card runs at 954MHz bace and 1020MHz boost by default. I'm got it to 1100MHz boost and 1035MHz base, with 1140mV max and 937mV on the core, 7000MHz VRAM, 75 degrees target temp, 110% power target.

First problem - Clock speed. When i run MSI Kombustor, the clock speed doesn't go up to the boost 1100Mhz, but instead hovers around the base clock - 1035MHz. I'm don't know if it's normal or not, bur i assumed it's not and went to fix it. I googled around a little and figured to turn the power management mode from Adaptive to Max Performance. When i ran Kombustor again, the 780 Ti would randomly drop from 99% load to ~50% and them my secondary Physx GPU GTX660 would kick in for whatever reason. I'm super confused. What should i do now? The OC is stable so far from what Kombustor says.

[RamboOC]

When to load dropped to ~50c, was the gpu overheating?

[Raudi_]

I'm trying to overclock my GTX 780Ti from Asus with MSI Afterburner and Asus GPU Tweak. I'm new to GPU overclocking and i'm running into some problems already. The card runs at 954MHz bace and 1020MHz boost by default. I'm got it to 1100MHz boost and 1035MHz base, with 1140mV max and 937mV on the core, 7000MHz VRAM, 75 degrees target temp, 110% power target.

First problem - Clock speed. When i run MSI Kombustor, the clock speed doesn't go up to the boost 1100Mhz, but instead hovers around the base clock - 1035MHz. I'm don't know if it's normal or not, bur i assumed it's not and went to fix it. I googled around a little and figured to turn the power management mode from Adaptive to Max Performance. When i ran Kombustor again, the 780 Ti would randomly drop from 99% load to ~50% and them my secondary Physx GPU GTX660 would kick in for whatever reason. I'm super confused. What should i do now? The OC is stable so far from what Kombustor says.

Drop the PhysX card you don't need it with a GPU as strong as the 780ti and keep trying messing with the fan profiles, because the boost clock depends alot on the tempature of the GPU, Like my card can boost at stock speeds all the way up to 1300mhz with no overclock because of low temps. the hotter the card gets the lower the boost clock speeds will be.

[Enderman]

Do not use the physX card, you're losing performance.

[alexfsr]

The Physx card helps a lot (personal testing) when maxing out Physx games with the 780 Ti. The Fans were at 100% and the card was hovering around 79 C.