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

Newbie

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

Mittwoch, 14. April 2010, 22:25

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

Beiträge: 18 130

Donnerstag, 15. April 2010, 19:58

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

Beiträge: 2

Donnerstag, 15. April 2010, 21:15

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

Beiträge: 99

Mittwoch, 21. April 2010, 22:45

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: