I used to get around 63,4Mh
all of a sudden 6900xt started to fail (2days, before perfect runs). When I lower overclock for 6900xt both cards go down to ~60Mh and stable. When I increase OC for 6900 xt a little, both cards push to 63,4 but 6900xt starts to fail.
any suggestions on improving Mh and reducing power plz?