MSI RX470 4gb hashrate falls to 4Mh/s (one card of 6 card gpu rig), 2 samsung 4 hynix, (problem with 1 samsung)
What can be the problem ? what is wrong with it ?
MSI; core clock 2100, mem clock 1125 /2 samsung
core clock 2000, mem clock 1125 /4 hynix
note: hynixs were 1900 on msi afterburner 26.2 hashrate, then i make it 2000 its 27.6- 28.2 mh/s (not very stable but more good than 26.2)
and it mined for hours and dropped mining in 23mh/s (all of 6 cards)
TOTAL nearly 140 MH/s
and i make again it 1125 - 2000 and 2100 and mined for ours, and now all cards is okay and stable, but
one of samsung falls to 4 MH/s (stable on 4mh/s)
TOTAL nearly 140
what can be the problem, any one have idea ?
Thank you !