I have an XFX 4870. The card has always ran warmer than most others I've had. I recently decided to disassemble the card and clean it up good for the first time since I got it. Before this I had always just sprayed it out really well and it worked fine. Since I had the card for a while I decided to replace the paste/thermal padding on the card.
After I put it back together and booted the card I noticed my MEMIO temps are going up to 100c-105 under load and with the fan at 80%.
The DISPIO temps run about 60c under load. All other temps are good as well. The MEMIO temp is the only problem. As soon as it hit 105c I dropped the memory clock down to about 400mhz which dropped my temps down to about 80c.
The thermal padding is some I bought off ebay and it does look different so I am not sure if this could be raising the temps. The card screws are as tight as they can go. I don't see anything which leads me to believe the heatsink isn't sitting properly. It mounted squarely onto the card with no reason for it to shift or slide.
The thermal padding doesn't look like it smashed very much though, despite the screws being as tight as they can go. The padding is the same thickness as the old stuff, but seems to be a different type of material/compound.
Any ideas what I might be missing here or what is most likely to cause the MEMIO to run hotter?
I am considering getting a zalman cooler off newegg and using the heatsinks to cool the memory. I read on another thread (on this forum I believe) that the memory isn't what's actually getting hot, instead it's the controller which is located elsewhere. Perhaps someone can better explain that?
I can get a different thermal padding, different cooler, etc. I just need to learn what is going wrong here so I'll know which approach to best fix it.
After I put it back together and booted the card I noticed my MEMIO temps are going up to 100c-105 under load and with the fan at 80%.
The DISPIO temps run about 60c under load. All other temps are good as well. The MEMIO temp is the only problem. As soon as it hit 105c I dropped the memory clock down to about 400mhz which dropped my temps down to about 80c.
The thermal padding is some I bought off ebay and it does look different so I am not sure if this could be raising the temps. The card screws are as tight as they can go. I don't see anything which leads me to believe the heatsink isn't sitting properly. It mounted squarely onto the card with no reason for it to shift or slide.
The thermal padding doesn't look like it smashed very much though, despite the screws being as tight as they can go. The padding is the same thickness as the old stuff, but seems to be a different type of material/compound.
Any ideas what I might be missing here or what is most likely to cause the MEMIO to run hotter?
I am considering getting a zalman cooler off newegg and using the heatsinks to cool the memory. I read on another thread (on this forum I believe) that the memory isn't what's actually getting hot, instead it's the controller which is located elsewhere. Perhaps someone can better explain that?
I can get a different thermal padding, different cooler, etc. I just need to learn what is going wrong here so I'll know which approach to best fix it.
