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4870 80c at idle

post #1 of 17
Thread Starter 
Hey guys (and girls?) as the title says I have Sapphire HD 4870 512 dinosaur I know, but I just got the capability to water cool it. I know they don't make a full cover board for it but it runs at 80 with a 30% fan at idle and I am just wondering what options I have for getting the temp down. Please note this is at stock everything and this is in rivatuner it shows 3 core temps and the highest is at 80 the other 2 are at 64c ambient temps stay about 74f.

I don't really want to spend $100 on an old card to water cool it unless I can use the parts on a newer card, id rather spend that money on a better card. But just wondering if I can pull it apart and re-apply TIM or something to help out.
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post #2 of 17
Check if it's very dusty- that can make the temps skyrocket.
post #3 of 17
1. Open the card, clean it up.
2. Apply better TIM
3. Use Manual control on the fan


My CFX HD4890 XXX need 65 % fan to get decent temps on idle.
 
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post #4 of 17
Holy crap thats hot......definitely take it apart, clean it, apply better TIM. Also, manually set fan speeds as others have mentioned.
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post #5 of 17
Known feature of a lot of these cards. Use the manual fan control to speed the fan up to ~40%. Temps will drop to around 40-50 C.

Check this picture for details.
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post #6 of 17
For now do what tianhui said. Since your able to watercool take a look at some universal waterblocks and some small vram heatsinks. These waterblocks work on most cards so you'll most likely be able to use it on your next card, just check in the compatibility list to make sure.
post #7 of 17
Thread Starter 
Its clean, like I said I was just in the case doing the cpu loop and I am pretty anal about keeping my case and components clean anyway so it has never really had any dust on it to speak of, have had dust covers on the case fans since day 1.

It might also be important to note that I had very good temps on my cpu before the water look as a sign that there is good air flow through the case.

is there anything I would have to buy to replace when I take it apart? I have plenty of tim, as5 MX2 and ceramiq already, just dont want to get into it and have to order something to put it back together as there are no computer stores near me.
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post #8 of 17
Thread Starter 
Quote:
Originally Posted by Yumyums View Post
For now do what tianhui said. Since your able to watercool take a look at some universal waterblocks and some small vram heatsinks. These waterblocks work on most cards so you'll most likely be able to use it on your next card, just check in the compatibility list to make sure.
recommendations?

Fan is already on manual at either 30 or 35% at idle
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post #9 of 17
Well, you said it's a dinosaur so the TIM is most likely incredibly dry and barely existent anymore at this point. I suggest you take off the heatsink, remove all of the old dry paste with isopropyl alcohol, thoroughly clean the heatsink fan, and of course apply new TIM.
post #10 of 17
Thread Starter 
Well the TIM was old, it was dried up a bit, got it all back together and added a fan blowing cold air from the intake across the card and netted a whole 3º im at 77 idle now, but I can't open CCC to check the reference fan speed I click it and I get the wait circle and then nothing happens so I am about to re-install that.

Might be important to note (although this problem has been going on a lot longer) but I added 2 little 4" UV cclf's for my tubing and when I turn them on my card goes haywire and runs the fan to 100% and kills the output to the monitor and causes a BSOD .. kind of weird and I don't know why. Again the temp problem is older than that though
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CPUMotherboardGraphicsRAM
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Hard DriveCoolingOSMonitor
A-Data N001 SSD  XSPC Rasa 750 Win 7 Ult. 64bit Asus 22" 
PowerCaseAudio
Corsiar TX750 Antec 1200 X-Fi Xtreme Gamer 
CPUMotherboardGraphicsRAM
Q6600 (3.6Ghz 1.487v) Asus P5Q-E (2x CF)Sapphire HD 4870 512 & 1GB 4GB (2x2GB) G.Skill PC8000 
Hard DriveOptical DriveCoolingOS
A-Data N002 128GB SSD, 1.5TB WD Green Pioneer DL-DvD/RW XSPC RASA 360 push/pull Windows 7 64bit Ultimate 
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22" Asus WS-HD VK222H Logitech Elite Corsair Tx750 Antec 1200 
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