I just got my new cards: 2x HD 6950 2GB flashed to 6970. Got them up and running at stock (800/1250) @ 300-350 Mhash/s
any tips for flags?
Running catalyst 11.5b or whatever newest on guru3d is.
try with and without vectorization which is -v
and the rest -w64 -f1
one of my machines does better with vectors and the other without them...almost the same hardware and same software packages
I would use -v -w 128 without hesitation. Consider starting with a higher value such as -f 60 for a work station used for other things or -f 30 for a dedicated machine. Then, after a time, if all is well, lower the -f value in 5 or 10 increments and again let it go for a time. I have found that even on my dedicated windows machines [one Win7 x64 and one Vista x64 with Catalyst 11.5], that -f 1 sometimes causes a lock up if you login to your locked console [which you should be locking] and as the monitor powers up and the screen comes to life and I moved the mouse too quickly ... boom. Totally frozen. Actually, I think it was still mining, but there was nothing that could be done with the computer until I power cycled it [once, pressing power teased the OS into a graceful shutdown, but the other time, I had to hard power cycle]. So, careful with starting with too low a value for -f; I decided on -f 10 on my dedicated machines since any differences going to -f 1 were pretty much neglible. Also, turn Aero off for your dedicated machines and even your multiple use machine if you don't mind having it off [I kind of like it and find it useful and productive as I can see through the window borders meaning I can make just a little better use of my real estate or other niceties that transparency can provide].
BTW ... I use -f 30 for my workstation [which gets used all day for work]. I think it would work even lower [although I use poclbm command line, not the GUIMiner]. For 69xx series, I recommend using poclbm executable and not phoenix. But for 58xx series [and probably 59xx series], I suggest using phoenix using the phatk kernel as the difference in hash rate [more than 3% on my 5850 cards] more than makes up for the stale shares issue with phoenix [which I hope they fix soon].