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[Official] AMD Radeon HD 6850/6870 Owners Thread - Page 327

post #3261 of 6939
11.4 ccc here no issues.
6850x2.
only issues is punkbuster and afterburner in BC2.
mesely 850mhz oc isnt cutting it wink.gif
My cards do around 950mhz without issues when PB dosnt crash.
cards I have is bang for the buck especially for eyefinity.

BF3 and hopefully a 28nm upgrade is what I look forward.
new ssd, and the rest is as it is.
computer upgrade wont happen soon heh.
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post #3262 of 6939
Quote:
Originally Posted by Zerkk;12823239 
Well so much for a stable card. Had my PC freeze up during a BC2 match yesterday, I'm guess that's showing an unstable OC on my 6850. It's at 950/1125 with stock volts so I'm going to knock the voltage up a tad and see if that' stabilizes it. I've never had a problem until now and it figures it would happen during a BC2 match where I lose all my points I earned during the game.... so lame.

Could it be the system OC unstable though? BC2 has recently locked up on me when GPU's were at stock clocks. My system was proven stable by P95 but then BC2 seemed to be the real test for it.
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post #3263 of 6939
That's might be it but I've been fine with my OC in the past with BC2 when I was running with my 4850. I'll set my clocks back to stock and keep my GPU OCed and see what I come up with. Looks like I have a bit of testing to do after work.
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post #3264 of 6939
Quote:
Originally Posted by Alden;12822105 
why would you run your card with 0.3v more vcore and risk degrading it for a measly 100-150mhz. will your voltage regulator circuitry handle that? mine does not have a heatsink so i wouldn't push it. although i have version 2 of the card with 2 6pin power connectors so i could differ

because maybe i want to push the crap out of it?

my previous card did like 875 on the stock voltage and 1100+ with 1.4v (+2.5v). 225mhz on a GPU is nothing to scoff at, and I'm willing to bet this card can do close to 1200 with that voltage. anyway i am not willing to settle for less than 1.3v.

i never really expect to keep a card beyond the next generation. lots of people doing 1.3v on air and when i have sinks on everything + the card is on water and never even hits 50c...why not?

maybe people shouldn't put cpu's on ln2 and push the **** out of them either???
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post #3265 of 6939
"in pursuit of performance" thumb.gif
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post #3266 of 6939
Well I ran OCCT again at 950/1125 and after 8 minutes the driver crashed. Dropped the core to 925 and it ran for 15 minutes without a hiccup. The card gets around 82 so I didn't want to leave it running for to long. I'll test with BC2 later but I'm betting that that's what my problem was.
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post #3267 of 6939
Quote:
Originally Posted by madmanmarz;12828492 
because maybe i want to push the crap out of it?

my previous card did like 875 on the stock voltage and 1100+ with 1.4v (+2.5v). 225mhz on a GPU is nothing to scoff at, and I'm willing to bet this card can do close to 1200 with that voltage. anyway i am not willing to settle for less than 1.3v.

i never really expect to keep a card beyond the next generation. lots of people doing 1.3v on air and when i have sinks on everything + the card is on water and never even hits 50c...why not?

maybe people shouldn't put cpu's on ln2 and push the **** out of them either???
Completely agree one version of smartdoctor limits voltage at a high 1.35..with my asus cards you can monitor vrm temps and they are not bad in anything but OCCT.Imo 1.3 is perfectly safe as long as your ambient temps are too high.Water cooling these cards is overkill, with a good air cooler temps are not going to limit your overclock.I hope your using a full cover block because vrm temps are just as important as gpu if not more.
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post #3268 of 6939
add me gunner.gifbiggrin.gif

imagem0030m.jpg

My Sapphire HD6850
post #3269 of 6939
Hey all. So you've seen my system before:
Sapphire HD6850
OC using Trixx to 1005 core, 1200mem, w/ 1.18v

http://i1222.photobucket.com/albums/dd488/mrhdream/IMG_0225.jpg

Thought I knew what load testing was, boy was I wrong...
Played mass effect 2 for hours (noticed it affected my cpu temp much higher than my gpu... max cpu 61-63), gpu never above 65
Played crysis sp demo as a test (not nearly the cpu temp increase, to max 57)

Decided to try Furmark, ran that badboy, cpu never above 57, but gpu temp stabilized at 78-80, never going above, with a max fan speed of 80% set to auto.
During both gameply and furmark, never any artifacts, no BSOD, worked fine.

Is this a reasonable temp? Never seems to hit that high on regular games, but figured I'd just stress my gpu some, I was def. nervous watching the temps rise on the gpu, but was happy the auto-fan control dialed up to the point where temps stabalized.


thoughts?
thanks!
post #3270 of 6939
Quote:
Originally Posted by smoke420;12829523 
Completely agree one version of smartdoctor limits voltage at a high 1.35..with my asus cards you can monitor vrm temps and they are not bad in anything but OCCT.Imo 1.3 is perfectly safe as long as your ambient temps are too high.Water cooling these cards is overkill, with a good air cooler temps are not going to limit your overclock.I hope your using a full cover block because vrm temps are just as important as gpu if not more.

core is on water and the vrms/memory all have copper sinks with a fan right on them... ran a 2900 pro on a similar setup with 1.3 or 1.35v for a LONNGG time with no problems.
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mhmm
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