Wow, I dropped my 5870 memory clock to from 1200 MHz to 180MHz and saw an increase of 4-7Mhash/s. More importantly my temperatures dropped by 10C.
Don't drop mem clock below 300 Mhz. If u increase it to 300 Mhz, u will see more gain.
my trick is to use core clock/3 + 14= mem clk gives maximum hash.
If your core clock is 990, then 990/3 + 14 = 344 gives u maximum hash/s & of course 10 C drop in temp.
I remember you saying that when I first joined the forum a few weeks ago. No matter how hard I try, 960/390 is the best stable config I can get away with on my 5830. It drives me nuts. I can usually get it to run at 380 on Memory Clock for a bit, or 970 on Core, but it always just ends up freezing or crashing the drivers for the card. If I tried to drop my clock to 334 (per your equation), my computer would die outright. Win 7 64. What am I doing wrong?
If u installed catalyst control center uninstall it. It won't allow to go more & interfere.
Just install this 4 only for mining. Some times even VC++ not necessary.
ATI display driver, ATI catalyst install manager, APP 2.3 (or) SDK 2.1 & VC++
Still i am running at 1038/360 with 100% fan & temp <73C getting 298-300 Mhash/s
Windows 7 32 bit, Aero enabled.
Miner with -v -w128 -f10
If i run with -f1 some times system gets crashed, if i use youtube or accidentally open a site with flash...
I have the same issue with Flash...if you haven't, you can right click on a YouTube video, go to "Settings" and uncheck "Enable Hardware Configuration" on the Display tab (I know you know this, but lots prolly don't).
System specs for me:
Win 7 Home Premium 64-bit w/Aero and XFX 5380
Miner - Phoenix - running with -k poclbm VECTORS BFI_INT FASTLOOP AGGRESSION=7 DEVICE=1
(no hashrate change with smaller worksize after BFI_INT)
Current stable config @ 960/360; current temp 77C (varies between 70 and 80 depending on room temperature)
Current hashrate ~ 288-290MH/s
Software looks good...no Catalyst Control Center lurking about. Currently running SDK 2.1 and 10.7 display driver.
I may be at my max with this here Windows box.
I'd love to get a 970 or 980 stable config, tho...seems to get damn near 300 MH/s when I have it up that high.
Also may be what you get is maximum & can't go beyond.
Default core clk for 5830 is 800, while 5870 is 850 & 6870 is 900.
At current I can go up to 1040 in MSI...no idea if that's wise, but the slider goes over that far.