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Will someone Help me Real Quick? first mining rig
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Topic: Will someone Help me Real Quick? first mining rig (Read 2809 times)
Serge
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Re: Will someone Help me Real Quick? first mining rig
May 27, 2011, 02:51:28 PM
#21
people who said don't use crossfire - i'm not sure how they able to run dual cards on windows without crossfire, i wasn't able to run them both without it
- use single crossfire bridge between two cards ( i don't think it matters which connection out of two you use)
- in ati ccc enable crossfire
- do all tweaks in msi afterburner (i don't look at what ati ccc reports as current clock values as long as i know both my cards hashing at expected rates
sometimes when overclocking system can become unstable and even after reboots sometimes acts weird, to fix it i would just uninstall and install video drives again in device manager in control panel and start steps above all over
get both cards recognized and able to mine at default values, and keep an eye on gpu temps. lowering mem clock will allow to bump gpu clock and keeping temps under control. overclocking uses more power per cards so if you have low power supply overclocking may render system unstable too.
DarkKnightNomeD
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Re: Will someone Help me Real Quick? first mining rig
May 27, 2011, 03:00:16 PM
#22
i think IT IS CCC underclocking my second video card
i just installed 11.5 drivers only with cl 2.4
"Previous Drivers" on ati site, does not load 11.4 ccc and drivers only for me
orthzar
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Re: Will someone Help me Real Quick? first mining rig
May 27, 2011, 03:08:49 PM
#23
What wattage is your power supply rated at? I recall that the more modern cards need in excess of 500 watts to function properly.
You might test each card separately to see if you got a bad card. For example, you might play a 3d game with only card 1 installed, then play with only card 2 installed, then play with both cards installed (and bridged?).
Good luck
DarkKnightNomeD
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Re: Will someone Help me Real Quick? first mining rig
May 27, 2011, 03:23:32 PM
#24
i think i just figured it out
i uninstalled all drivers, installed 11.5 catalyst drivers only, it comes with 2.4 for some odd reason
also video card number 1 is overheating i guess cuz its too close to video card number 2
timmmay
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Re: Will someone Help me Real Quick? first mining rig
May 27, 2011, 10:10:12 PM
#25
Quote from: DKNomeD on May 27, 2011, 02:18:13 PM
i just found this out, my second video card will not overclock infact that S.O.B. will not even Default Clock
its Underclocking itself, and i cant stop it
i used ati trays, i used msi afterburner, its staying at 157 cpu mhz and 300 memory mhz
swap the cards around on the motherboard and see if that helps
█ DECENT FOUNDATION █ ICO ⏰ 10th of September
pokermon919
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Re: Will someone Help me Real Quick? first mining rig
May 27, 2011, 10:34:06 PM
#26
I've noticed the underclocking on my sapphire 5870 also. This was after I was able to clock beyond the range that ATI would allow. There was a thread that gave instructions to allow MSI Afterburner to clock beyond the locked ranges. It was a mod to the msi config file. That didn't work for me, but luckily I found a site about overclocking and copied them. I use AMD GPU Tool to set clocks, then use MSI Afterburner to set fan speed. With this method I was able to clock beyond the locked ranges which capped the core clock at 900mhz.
Currently my 5870 is Core=960 Mem =335, getting ~400mhash
Here is where I noticed the same thing as the OP, after clocking beyond the set range and restarting my comp the clocks I saved disappeared, and my gpu was way underclocked. This still applied even when I save the clock settings and even click the option in MSI to apply the clocks are startup. I've just given up and redo the clocks if I restart my comp, which hardly happens since I'll be mining 24/7.
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