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.
Topic: Will someone Help me Real Quick? first mining rig (Read 2829 times)
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
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
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
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
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
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
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
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
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.
- 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.
i feel asleep last night
the problem i had last night was that the Computer would RESTART whlie Mining for 5 to 15 minutes
the problem i had last night was that the Computer would RESTART whlie Mining for 5 to 15 minutes
the issue maybe due to a single or a combination of following:
a) too much overclocking
b) overheating
c) not enough power
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
i feel asleep last night
the problem i had last night was that the Computer would RESTART whlie Mining for 5 to 15 minutes
the problem i had last night was that the Computer would RESTART whlie Mining for 5 to 15 minutes
the issue maybe due to a single or a combination of following:
a) too much overclocking
b) overheating
c) not enough power
i feel asleep last night
the problem i had last night was that the Computer would RESTART whlie Mining for 5 to 15 minutes
the problem i had last night was that the Computer would RESTART whlie Mining for 5 to 15 minutes
Use MSI Afterburner and keep an eye on the temps. HWMonitor is good to monitor temps too.
What clock are the cards set at?
What temp are they running at?
i feel asleep last night
the problem i had last night was that the Computer would RESTART whlie Mining for 5 to 15 minutes
the problem i had last night was that the Computer would RESTART whlie Mining for 5 to 15 minutes
MSI afterburner FTW 
i just removed the crossfire's
i just installed catalyst 11.5
for some FREAKING reason
my Clocking and Memory, will be normal 700 and 1200 whatever
then it will jump to 150 and 300 for no freaking reason
i just installed catalyst 11.5
for some FREAKING reason
my Clocking and Memory, will be normal 700 and 1200 whatever
then it will jump to 150 and 300 for no freaking reason
mine does this too when i'm not mining...no idea why
Do yourself a favour, download MSI Afterburner and use that to set the clock/fan settings. Kill the CCC.exe process or your miner will crash often.
i just removed the crossfire's
i just installed catalyst 11.5
for some FREAKING reason
my Clocking and Memory, will be normal 700 and 1200 whatever
then it will jump to 150 and 300 for no freaking reason
i just installed catalyst 11.5
for some FREAKING reason
my Clocking and Memory, will be normal 700 and 1200 whatever
then it will jump to 150 and 300 for no freaking reason
i am a mining newb too - but are you should not use crossfire on opencl/cal computations
fe.
http://forums.amd.com/forum/messageview.cfm?catid=390&threadid=134757
happy computing
fe.
http://forums.amd.com/forum/messageview.cfm?catid=390&threadid=134757
happy computing
im starting to think i have the WRONG DRIVERS
noo i dont think so, usually the frequencys are 700 and 1200+
and its 150 and 300
and its 150 and 300
cards always use low freqency in 2d (windows)
its ok.
its ok.
ok this is fking wierd
i just noticed just now
in my ATI OVERDRIVE / Overclock settings, its showing it as 137 herts and 300 memory, its like Super underclocked
i just noticed just now
in my ATI OVERDRIVE / Overclock settings, its showing it as 137 herts and 300 memory, its like Super underclocked
yes i did, and its working
let me do that, ill reply in a sec
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