I finished my first mining rig with 4x EVGA GTX 1070 SC Black Edition (6 when my extra cables arrive).
I use a MSI Z170A Pro Gaming Carbon with G4400 CPU and a Seasonic 1200w Platinum 80+ PSU.
I will connect 4-6 120mm fans when they arrive, to improve the airflow between the GPU’s.
Each GPU has it’s own PCI-Express cable connected to the PSU.
The powered USB risers are directly connected to the PSU with Molex with 2 risers per 6-pin peripheral to Molex cable.
I didn’t use the Molex to SATA connectors that came with the risers due to the reported fire hazard.
I’m new to this world and the world of overclocking (or undervolting) GPU’s, but I believe I do have some basic knowledge.
My current settings can be seen in the attached screenshot. I’m not sure if these are optimal, so tips are welcome and will be much appreciated.
I am currently averaging about 430 sol/s with EWBF miner.
The issue I’m having at the moment is that GPU0 (connected to the first PCI-Express slot) consistently brings 30-40 sol/s less than my other GPU’s.
I can’t seem to solve the issue by tuning my OC settings on EVGA PrecisionX OC.
Would the problem have anything to do with my current setup? GPU 0+1 are setup exactly the same as GPU 2+3 though.
Are there any other potential reasons why this could be happening?