I have water-cooled rig with 4x RTX 3090 and 2x RTX 3080. Both 3080 are the same Gigabyte Gaming series. One of them works perfectly, 98MH/s, no problem. The second one still freezes on 0MH/s after some time. If I overclock it to the same values like the first one, it goes 97,…MH/s but after approx 10 minutes goes to 0MH/s a and Hive is restarting. If I overclock it less (1800MHz memory and 200W power limit) it can mime for about 1-3hrs but then 0MH/s again.
I tested it in Windows to see memory temperatures and this is ok (about 90°C).
I changed pads for 2 times for sure but no effect. Any ideas where can be the problem?