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Overclocking 6990

post #1 of 14
Thread Starter 
Instead of using the bios switch, can i just go in CCC or AB and up it to 920/1340? or will this not work. I did up Power to +20 in CCC. Whats a good oc to start with?
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post #2 of 14
Ask these guys
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post #3 of 14
I wouldnt recommend OCing with the stock cooler
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post #4 of 14
Quote:
Originally Posted by Sir Amik Vase;12789210 
I wouldnt recommend OCing with the stock cooler

One guy here can do 975 on the stock cooler. The "loud" and "hot" things you've been hearing about the card are lies.
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post #5 of 14
Thread Starter 
what memory clock does he have though.? and is it on default bios switch? i dont see the bios switch ups voltage any, so idk how its good.
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post #6 of 14
Quote:
Originally Posted by thrgk;12789196 
Instead of using the bios switch, can i just go in CCC or AB and up it to 920/1340? or will this not work. I did up Power to +20 in CCC. Whats a good oc to start with?

No, it will not work better then using the BIOS switch. The BIOS switch is raising the voltage to 1.175 and the speed to match the 6970. Just move the switch. It takes 2 seconds, and loading a BIOS to raise your voltage is always better then using a program to do it.

All you heard about the ''switch warranty, noise and heat'' was green-propaganda. We know, we have the card now. smile.gif

Don't use Afterburner for now.

Move the switch, then go into CCC, and raise your clocks slowly, one at a time only, with Furmark runinng. Start with core speed, and when you start seeing artifacts, back down a bit. Then start pushing memory clock. Do the same procedure again.

After this, you can use Aftrerburner ONLY to raise your voltage more if you want to. Don't use it to raise core and memory speed. Use CCC to raise core and memory clocks instead.

And come join us in the 6990 Club. It's there for a reason. To help each other use that great card. smile.gif
Edited by Levesque - 3/19/11 at 7:29am
    
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post #7 of 14
just a noob question.............what's CCC?
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post #8 of 14
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post #9 of 14
Quote:
Originally Posted by mastical;12789243 
One guy here can do 975 on the stock cooler. The "loud" and "hot" things you've been hearing about the card are lies.

Are you being sarcastic? Everything you have heard is TRUTH. It's the fan boys who have played it down.

I just plugged mine in last night and by god its loud, and it's HOT. It's running at 58C _IDLE_ (OC bios switch) with the fan on 65%. 65% is ungodly loud. 65% is 2x louder then my Crossfire 6950 at 85%.

If I turn the fan down to 40 it idles at 65C.

It's unplayable at 45%. I was literally in a game for 5 minutes and the god damn thing hit 100C. I almost crapped my pants. VRAM / mosfets were 105/106. Hope I didn't break it.

Idle being... I'm working on a mid term. I have 4 word documents open on 2 screens with 1 browser window.

I'm about to rip it apart and put on these MCW80s I have.
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post #10 of 14
Quote:
Originally Posted by Intangible;12794933 
Are you being sarcastic? Everything you have heard is TRUTH. It's the fan boys who have played it down.

I just plugged mine in last night and by god its loud, and it's HOT. It's running at 58C _IDLE_ (OC bios switch) with the fan on 65%. 65% is ungodly loud. 65% is 2x louder then my Crossfire 6950 at 85%.

If I turn the fan down to 40 it idles at 65C.

It's unplayable at 45%. I was literally in a game for 5 minutes and the god damn thing hit 100C. I almost crapped my pants. VRAM / mosfets were 105/106. Hope I didn't break it.

Idle being... I'm working on a mid term. I have 4 word documents open on 2 screens with 1 browser window.
I'm about to rip it apart and put on these MCW80s I have.

woow idle temp 58c?? thats pretty damn hot , i was gonna get this card, if like u said , i will be freak out to get this card
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