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Huge difference of cooling between the 2 GPUs of the ATI HD5970

Tibici

Newbie

Huge difference of cooling between the 2 GPUs of the ATI HD5970

Wednesday, April 14th 2010, 10:25pm

Hi everybody,

I have the aquaduct 720XT and a GPU Block aquagratiX for HD 5970 (2x RV870) standard (not with Nickel plates). I've got an important difference of cooling between the 2 GPUs. Using games or stress tools like FurMark, I reach 60°C for GPU1 and 100°C for GPU2. Even in the idle state, I've got GPU1=44°C and GPU2=54°C.
Water T°C is around 29°C. The graphic card is from MSI.

I've used Noctua Thermal compound and checked that the compound is set similarly on the 2 GPUs and Memory chips (as explained in the documentation).

Is this a known issue or do you have any advice for me?

Thank you guys,

Shoggy

Sven - Admin

Thursday, April 15th 2010, 7:58pm

Do you know if you own the Rev. 2 blocks? They have a small Rev. 2 engraving at the base near one of the GPU surfaces. Can't be overseen if it is there.

Tibici

Newbie

Thursday, April 15th 2010, 9:15pm

Hi Sven,

I can't see any engraving on the external side of the waterblock. Should I unmount it from the graphic card to see it?
I can read "Stand 12/2009" into the documentation delivered with the block. It has been shipped to me on February, 15th 2010.

Its reference is n° 23483 in the Shop: http://shop.aquacomputer.de/product_info…roducts_id=2409

Thanks,

drbo

Full Member

Wednesday, April 21st 2010, 10:45pm

For me it seem that your GPU2 does not have good enough contact with the cooler.
I have the same waterblock, with an Sapphire HD5970 OC.
I run watertemps of 40/44 idle and 61/61 at full stress.
The GPU VRM, runs at 42/43 idle, 72/79 at ful stress
Chrech if you can get a better fit for GPU2.
drbo :thumbup: [MSIE_newline_end ]
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Shoggy

Sven - Admin

Sunday, April 25th 2010, 12:41pm

You have to remove the block to see the engarving (if it is there). It is on the base which has contact to the card.

wholehog439

Junior Member

Saturday, June 5th 2010, 4:03am

What is the difference with the Rev.2 blocks?
thanx

Shoggy

Sven - Admin

Monday, June 7th 2010, 11:10pm

Rev. 2 has some small changes on the base to avoid contact problems with specific components of the card.

wholehog439

Junior Member

Monday, June 21st 2010, 7:59am

So could having the rev.1 block cause any problems, I could not see any rev.2 engravings on my block.
thanx

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