I have an 8x MSI 5700XT Gaming X platform. I have done Memory Toimming in all of them modifying the BIOS, and I get 54Mhs in each of them with memory at 1750.
The problem is when I try to increase the OC speed of the memory, to obtain a greater number of MHS, my Rig crash in random times, sometimes a few hours, sometimes many hours, sometimes a matter of minutes ... there are times that one of the graphics cards is placed at 0Mhs and within a few seconds the PC crashes, Other times PhoenixMiner gives an error with a lot of hexadecimal figures and freezes, and every few hours I have to restart the PC and restart everything.
I have even tried leaving it at 1750, and it has lasted 55 hours without stopping giving 54Mhs per GPU, but in the end it has frozen.
I have the power set to -46% and the consumption of the GPU is 113W each.
Could you tell me how to leave the rig stable?
Thank you very much
Another thing you can do is isolate which card is causing the most issues. Put on card in a separate rig by itself, run it for awhile and see what it runs best at. Do it for all cards till you find optimal configuration. It takes time but I have had some of my 5700 rigs run for weeks without a crash. I have a friend that his rig was up for 3 months without a crash. In my experiences the XFX 5700's seem to be the most stable I have came across.