Quote from: namley on June 08, 2011, 03:04:18 AM

Quote from: donotdisassemble on June 07, 2011, 02:58:10 AM

I have one rig with 2 5830s and just ordered my second with 4 of them...

The two I have were unstable anytime I tried to clock above 970, or memory below its normal 1000... what gives... how are you guys able to OC them so high and they last for days. (shrug)

Make sure when your dropping the memory, between 400-600 the card is extremely unstable. The Sapphire 5830, has a power save mode, which underclocks the card to 157/400 I think. ** I know the Core Clock speed is for sure, not the memory clock speeds in powersave mode **

Drop the memory clock all the way down to 300, make sure that the card is running above the powersave 0.9V

MSI Afterburner - Can't do it ** not that I know of anyway **

If your using ATI Tray Tools, set the Voltage profile from 0.9 to 1.163 then save the core clock somewhere between 800-1000 or where every you want, and the memory down to 300

If you bump the core above 828 I found that the card hardlocks using the 0.9V card profile.

Start by adjusting it at 5MHz increments and test for a couple minutes mining, making sure you keep your temps below 80C. You can run the Temps higher, but its not recommended for long term use, especially 24/7 100% utilization lol
When the card starts to studder back it off by 20MHz, then start playing with the AGGRESSION and WORKSIZE and other RPC Miner options.

It takes some playing around with to find the sweet spot for the card in your system, but when you find that hotspot, she's good to go for a long time

, unless some fails of course Tongue

YES, Double YES! thank you. I can finally clock both cards the way I want and without crashing them. the key was removing all the crappy tools like afterburner, trixx. disabling ATI's own processes, and then removing UAC and installing ATI Tray tools as admin on win 7. Upping the voltage FIRST before playing with RAM speed was the trick! kudos! im at 980:180:1.163v and runnig stable at about 304Mhs on each card ... woo hoo. Grin

--edit: Namely: I just sent you a little token of appreciation. thanks much for the help. -John