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Overclock.net - Overclocking.net > Graphics Cards > ATI > ATI Cooling | |
*Pics* 4850 Temp Issue
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#21 (permalink) | |||||||||||||
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Yep, you were right, the duorb sucks air toward the card, the big fan, however, pulls air away, so that's what's causing my bad vram temps. Thanks, give me a minute to fix it.
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#22 (permalink) | ||||||||||||||
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WaterCooler
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The duorb and fan configuration will hurt everything on the card. The purpose of its design was to blow aire down on the fins and then over all of the card cooling everything. You other fan looks more powerfull, so its going to pull most of the air that way. This will pull heat from the fins some, but nothing else. Metal can only take so much heat before it cant transfer any more without a fan.
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#23 (permalink) | |||||||||||||
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Oh, and that big fan doesn't do much. It was too loud for me, so I just plugged it into the 5v rail as opposed to the 12v. It still blows a good amount of air, but it's just not so loud.
Ah dammit. I flipped the fan so it blows the same direction as the duorb, and my core still gets to 70c when it's under load. The vrm temps didnt change, and the memory still gets up there to 83C. I may just have to deal with the loudness and flip the fan to 130cfm. In fact, flipping the fan appears to have raise the temps further. It's at 80C load now. That's overclocked to 775/1000, and the voltage still at 1.33. That's with the 130cfm fan not running. That's with it running full speed.This is ridiculous.
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Last edited by mth91 : 08-01-08 at 05:52 PM |
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#24 (permalink) | |||||||||||||
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If you take a look at those pictures, that big fan it blowing the same direction the duorb is, up. So is that fan next to it, and the fan that's perpendicular to the hard drives is blowing to the left. So is the fan at the front of the case, so all the air moves from the front of the case to the back.
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#25 (permalink) | ||||||||||||||
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WaterCooler
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The duorb blows to the card, the fan pic is blowing down (away) from the card. The fan blows in the direction of the stickers.
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#26 (permalink) | |||||||||||||
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Yeah. That's bad, so I reconnected the fans. This time the little fan is on the duorb, and it blows up, the big fan is blowing toward the duorb also, but it's on the right, blowing on the vrm's now. It's running at 130cfm, and my god, these temps are still insane. Something is seriously wrong. I'm considering cutting off the vrm part of the stock cooler, and putting that on instead of the zalman sinks. Is the stock cooler made out of aluminum or copper?
OMGThis is ridiculous. Why in hell would my temps be so high compared to everyone elses. I could put this thing on water, and it still wouldn't do me any good because the vrm's are ridiculous. When are they going to come out with something that can watercool these damned vrm's. WHAT THE HELL IS GPU TEMP #3!!!!!!!!!!!!!!! I'm beginning to wonder if gpu temp #2, and gpu temp #3 are actually vrm's and ram, because that' doesn't make sense. Maybe my vrm's are secretly really cool, and so is my ram, but I can only see the gpu temp, so I wouldn't know.
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Last edited by mth91 : 08-01-08 at 06:32 PM |
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#27 (permalink) | |||||||||||||
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Ok I reseated the cooler, and now my idle temps have dropped a bit. I'm going to see how the load temps did. It was just a minor drop, like a couple of celsius.
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#28 (permalink) | |||||||||||||
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![]() Got the temps out of the hundreds now by reseating the duorb, but those temps are still way too high.
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#29 (permalink) | ||||||||||||
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Just to let you know, those GPU temperatures reported by GPU-Z are not VRM temps. They're just three sensors inside the gpu die at different strategic locations. To read you VRM temps you need the latest version of Everest. For example, my 4870 report all 3 temps in GPU-Z in the range of 52-55 load. VRM, in the other hand, will hit 95 degrees easily. And this is with the Zalman VRM sinks on them.
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