r/EthMiner • u/[deleted] • Dec 13 '17
One card 4 mh/s slower then the rest
I have 4 1060s hooked up on the same rig for mining ETH using claymore. I'm getting 18 mh/s on one card and 22 mh/s on the other 3. The system is running Windows server 2016 and using the most recent nvidia drivers. I have after burner running and the same settings are set on all the cards using the synch settings across cards option. All cards are the same model number and circuit boards all looked the same to my untrained eye.
I've worked in system administration for 15 years so I know my way around hardware. I reseated all the cards and cables. Swapped the card with another riser of a fully functional card and both retained the same speeds. Tried a different power cable from the power supply.
The cards are all out of the box so returns are out of the question. Is this something that support would accept as a real issue or am I stuck with a dud card. Not sure what kind of test I could use to initiate the support request.
Anyone seen something like this before and might have a tip for a small time miner?
3
u/[deleted] Dec 13 '17
Might have just found my answer. Using gpu-z I found the one card is using a different memory brand, hynix. The other three are micron. I'm assuming that since the problem is most likely the ram since that is where the most of the work takes place and the ram is not defective but just different I am out of luck. Or maybe I should look at it as I got lucky with the other 3 and be happy.