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How To: Overclock Your AMD / ATi GPU - Page 16

post #151 of 644
Quote:
Originally Posted by HothBase View Post
IIRC, this is a fairly common problem. Have you tried the latest drivers? If that doesn't fix the issue then I think you're simply gonna have to wait for ATi to fix it.

Edit: Or you could always force the card to run higher clocks 24/7.
Edit2: http://www.overclock.net/8581175-post14.html
That's how you do that with MSI Afterburner. Note that the values in that post are for a 5770, but I think you get the idea.
Superb, I was just looking inside a CCC profile, but didn't have a clue what was what

Still getting the odd bit of flickering though. I'll see if I can have a fiddle to try and get it a bit nicer.

Thanks!
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post #152 of 644
I'm sorry if this question was asked already. I browsed through the first 6 pages and I couldn't find anything about it.
Quote:
If you are using a 2xMolex to PCI-e power adaptor or are near the limits of the power output of your current PSU overclocking may not be recommended, as you overclock power draw can increase dramatically.
So if I have 2 cards in Crossfire on Corsair 650W TX which has 2 PCI-e connectors I shouldn't overclock 2nd card since I used both PCI-e connectors on 1st card and 2nd card is working on Molex to PCI-e adapter?
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post #153 of 644
Thread Starter 
Quote:
Originally Posted by DDin0 View Post
I'm sorry if this question was asked already. I browsed through the first 6 pages and I couldn't find anything about it.

So if I have 2 cards in Crossfire on Corsair 650W TX which has 2 PCI-e connectors I shouldn't overclock 2nd card since I used both PCI-e connectors on 1st card and 2nd card is working on Molex to PCI-e adapter?
It may be better if you could use one pci-e 6xpin in each card and one molex adaptor in each card. Provided the PSU is well within the reccomended spec for a crossfire setup if it is single rail it doesn't really matter too much, but of course a proper connector is always preferred.
post #154 of 644
Quote:
Originally Posted by coffeejunky View Post
It may be better if you could use one pci-e 6xpin in each card and one molex adaptor in each card. Provided the PSU is well within the reccomended spec for a crossfire setup if it is single rail it doesn't really matter too much, but of course a proper connector is always preferred.
Card is HD 5850.


Any advice where I should plug PCI-e connector, left or right looking at this picture?
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post #155 of 644
Maybe someone here has advice for me regarding overclocking my x-fire setup with MSI Afterburner. I didn't have any problems with using one card and overclocking but now I am having some issues. To start, I have "enable unofficial overclocking" set to 1 in the .cfg file as I did before. I am also using a G15 keyboard with the monitoring enabled in the LCD display so I can see my temps, voltages, clocks and such.

My 1st GPU when idle is running at .949v 157/300MHz...
My 2nd GPU is running idle at .949v 850/1200MHz...

Any particular reason my 2nd GPU while idle is not running at 157/300MHz as well? This is the same whether I have synchronization enable or not. My top card seems to run about 8 degrees hotter than the lower card which I am sure is to be expected, no?

If I try to adjust the voltage manually on either card or increase the core or memory and then try to apply it, my computer freezes and I have to manually reboot and I get a notice of a BSOD after rebooting. Sometimes it will just go to a BSOD sayaing "MACHINE_CHECK_EXEMPTION" or something similar. Again, this is the same with synchronization enabled or disabled.

Both my video cards are identical makes and models. I have a feeling overclocking both card at the same time is difficult and they probably need to be adjusted individually but I can seem to do either in Afterburner. I just wonder if anyone out there has had a similar experience or a solution.

Thanks
Edited by buffalofloyd - 5/12/10 at 9:42pm
post #156 of 644
so, when pushing the GPU, should we only look for particles, or also for errors in the bottom left?

i had a couple errors at 950 but i didn't see any particles so i backed it down to 940
post #157 of 644
How do I know which point to stop? I tried once to oc my card and ended it up with just artifacts. I didnt have artifacts on the test softwares but when gamed css there came problems, got lower points on furmark tests too. Also what is good balance/how much mhz for memory and the gpu?
Also should I even try to oc my graphic card when my cpu ocing fails with this mobo?

The guy at up me: you can fill your specs here http://www.overclock.net/specs.php?do=addsystem
Edited by MooMoo - 5/13/10 at 11:59am
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post #158 of 644
Fantastic guide, i'll ahve a go at OC'ing my 5970.

My only question is what would you guys recommend for tuning gpu voltages? The guide did not specify any preferred ones.

Thanks again.
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post #159 of 644
Quote:
Originally Posted by Mariusz803 View Post
Fantastic guide, i'll ahve a go at OC'ing my 5970.

My only question is what would you guys recommend for tuning gpu voltages? The guide did not specify any preferred ones.

Thanks again.
Msi afterburner
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post #160 of 644
Quote:
Originally Posted by yianni View Post
Msi afterburner
Okay sorry, I thought msi only tweaked your core and memory speeds.

Can I ask you if I need to have msi open in my task bar (constantly running) after I have overclocked? Or do you setup a profile with your core speeds and voltages that does not require msi to always be open?

Thanks again.
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