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6950 vreg1 @ 90C

post #1 of 8
Thread Starter 
Hi guys,

I just finished installing my first waterloop (w00t) and I'm noticing muuuuch lower temps then I was getting with air cooling!

The only number that hasn't changed much is my vreg 1 temperature. http://gpuz.techpowerup.com/11/08/04/gz.png

I have the Sapphire 1gb 6950 without the bios switch (non-ref) - and I *think* that the hot vreg chip can be seen here:

http://forums.techpowerup.com/attach...1&d=1297660728

I think it is the small chip directly to the center-left of the red box (and has the writing: Chill)

How can I cool this down? At load it is running over 90C + !!! I can't imagine that this is good. It does this on both of my cards and I have been taking them off of full load once it hits 90.

Any recommendations on how to get this down? I made an aluminum heatsink out of a very old laptop heatsink that measures 5mmx5mmx10mm (two fins) - but it doesn't seem to do anything.

Blowing air w/ a 120mm on that area seems to help, but not enough.

Any advice would be much appreciated
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Squirtle
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post #2 of 8
Thread Starter 
That image above is not of the same card. This is what my cards looks like: http://www.pcgameshardware.de/aid,80...e/?iid=1482606
Squirtle
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post #3 of 8
Are those temps with a full cover waterblock or just a GPU block? All the temps look high to me for a watercooled card.
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post #4 of 8
Thread Starter 
It's just a gpu block. I have two gpu blocks, two 6950s at full load, and a 2x120mm radiator with only one fan blowing on it.

I realize that more fans would help with the GPU cores - but I am mostly concerned about the vreg. Which I don't think is affected by the water cooling.
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post #5 of 8
90°C isn't that bad.
They are made to go up to 120°C.
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post #6 of 8
You could try the Enzotech RAMsinks or MOSFET sinks but they're difficult to stick to small chips. I had a similar problem with a 4870 and the only way I got the temps down was to have a fan on the side panel as well blowing directly onto it which dropped the temps from around 100ºC to the mid 70s. Having good airflow in the rest of the case should help too. My card didn't last too long which might have been the temps or maybe just bad luck.
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post #7 of 8
they make some pretty cool fans that mount into your expansion slots. If you want something large the have this and if you want to spend a bit less they have this or this
    
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post #8 of 8
I would go buy a small pwm fan and glue it on top of the vrms. Swap the plugs from your stock cooler with the pwm fan and plug it into the card. Frozencpu has a few 40mm-60mm pwm fans to choose from.
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