Hi everyone I'm new in the forum and I hope this is the right place for my help request.
I have a Gainward RTX 2700 and I'm wondering why my hash rate is only 9MH/s when mining ETH. I use NBMiner with Daggerhashimoto algorithm.
If I don't do any OC, my GPU mines with core clock of only 300MHz causing a very low hashrate. During this process memory clock stays @7000MHz as it should be.
In order to get a decent hashrate I'm forced to do some OC with MSI Afterburner. I don't touch neither core clock or memory clock, I just raise power limit to 114% (max possible) and then GPU starts to mine quite properly. Core clock stays between 1300-1400MHz and hashrate reaches of 38MH/s.
I'm pretty sure that if I was able to raise power limit beyond 114%, I could also get higher core clock and higher hashrate. Something like my GPU is thirsty for power.
My concern is more about power consumption rather than temperature. In fact with 114% power limit GPU needs 200W (and that's a lot!), while temperature stays safely under 45°C with 60% fan speed.
It is as if something is nerfing my GPU only when mining, because during stress test with FurMark everything goes fine according to values declared by manufacturer: core clock 1620MHZ, memory clock 7000MHz and 170W power consumption.
Thanks in advance to anyone who's willing to help me find a solution! 38MH/s is fine for me but I would like my GPU to need much less power.

Here there are some more details about my system:
- OS: Windows 10
- CPU: Intel Celeron G3930 with 16GB ram
- HDD: Corsair 256GB SSD
- PSU: Corsair Ax1200i
- MoBo: Biostar TB250-BTC-PRO
- GPU_1: RTX 2700 (described in the topic - 38MH/s @200W)
- GPU_2: GTX 1080 ti (42MH/s @170W with P0 state and ETHlargementPill both enabled)