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I DID IT! I finally got 1000MHz Core clock on my reference HD 5970

post #1 of 9
Thread Starter 
I finally did it. 1.2875v, 1000MHz core. 1050MHz memory.

It is stable, 40 minutes of MSI Kombustor, along with 30 minutes of Crysis.

GPU-Z Validation:

http://www.techpowerup.com/gpuz/32bwv/

Screenshot:

337



I will not be running this 24/7, my PSU is not enough. I had to downclock my i5 to 2.3GHz and unplug a few case fans, along with my second hard drive.

I've got 960MHz core and 1150MHz memory on 1.24 or something like that for 24/7 use.

My max VRM temperature during MSI Kombustor was 86c, max core was 66C.

I'm so happy!!!
Edited by White Fire - 2/18/12 at 1:02pm
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Red Thunder
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post #2 of 9
CONGRATS! biggrin.gifapplaud.gifapplaud.gifapplaud.gifapplaud.gifapplaud.gifapplaud.gifapplaud.gifapplaud.gifapplaud.gifapplaud.gif
post #3 of 9
pass a tool for scanning artifacts..
post #4 of 9
personally i would of went stock 5870 speeds on Core and memory then go on from there biggrin.gifredface.gif
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post #5 of 9
Thread Starter 
Quote:
Originally Posted by PontiacGTX View Post

pass a tool for scanning artifacts..

It passed AMD CCC's Stability test, it passed 20 minutes of the tool included in GPU-Tool It didn't artifact during some random test I found on the web, specifically this one:
freestone-group.com/video-card-stability-test.htm
And it didn't artifact during MSI Afterburner, and it didn't artifact during 30 minutes of Crysis. I think it's stable
Quote:
Originally Posted by REAPER XD View Post

CONGRATS! biggrin.gifapplaud.gifapplaud.gifapplaud.gifapplaud.gifapplaud.gifapplaud.gifapplaud.gifapplaud.gifapplaud.gifapplaud.gif

Thanks
Edited by White Fire - 2/18/12 at 2:21pm
Red Thunder
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Red Thunder
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post #6 of 9
so what are temps like?

EDIT: 66C at 1000mhz? Doesn't seem right...
post #7 of 9
Thread Starter 
Quote:
Originally Posted by naizarak View Post

so what are temps like?
EDIT: 66C at 1000mhz? Doesn't seem right...

I know, I ran it with 100% fan

I didn't get it either, but that's how hot it got.. the VRMs are what got toasty..
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Red Thunder
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post #8 of 9
mem clock is still really kinda.....well slow.....

stock 5870 is 1200Mhz, and trust me, it makes a big difference at high core clocks.
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post #9 of 9
Thread Starter 
Quote:
Originally Posted by wumpus View Post

mem clock is still really kinda.....well slow.....
stock 5870 is 1200Mhz, and trust me, it makes a big difference at high core clocks.

It's really hard to keep the memory cool when there is that big a load already on the heatsink, so I just lowered it..

You're right though, I get alot better performance with higher memory clock, that's why it's much higher with my 24/7 OC.
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Red Thunder
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