Any tuning advice for these Radeon cards? (6800, 6900 XT)

[uttles]

I picked the wrong time to start mining. Finding cards has been somewhat difficult. Anyway, I am getting decent performance out of these two cards, as seen below:

Does anyone have any advice on how to tweak these settings to push these cards farther (safely)? I feel like I’m not getting enough Mh/W with the 6900XT, but I don’t know.

[Yamaruan]

It’s very headache to manage mixed rig, it’s like you’re having twice as much of the problems. Sell of that 6900xt n look for another 6800, sounds easier to do.