Cold air feed to gpu

Bazippy · 27 Dec 2013 at 11:06

Running my 7990 is a lovely experience but when you add my 7970 matrix and start mining the temps fly up... The 7990 usually runs at 83c add the 7970 and we're rush through 105then screen goes back. Why does no one make a cold air feed induction for gpus? The hest for the 7990 is taking the air off the hot side of the matrix adding at least 20-30c

I'm now making my own using a exhaust blower mounted outside the case blowing into a plastic pci slot wide boxtube with sections cut out under the fans of the 7990 hopefully this will solve my problem... Anyone else had or done anything similar?

nutsnut · 27 Dec 2013 at 12:55

for my 7970 set up in my old case (poor air flow) i used and interal 80mm fan at one end of the GPU's (by the power connecters) and ran a 120mm fan out side of the case with the PCie brackets removed.

This was to push the hot air between the two cards out of the case.

I don't have any problems in my new case (carbide 540) with temps peaking at 65 and 75c

Bazippy · 27 Dec 2013 at 13:00

Tried everything, got great airflow even running full load for 2days it's at 83...it just can't cope with adding the 7970..the backplate gets really hot and the air is sacked straight onto the 7990.addimg a fan either end just slowed the process of overheating. This will sort it and will be quite unique once completed but just a pain I can't do anything else. Running games it's fine barely reaches 70c in either setup but. Mining is the heat problem.

spankingtexan · 27 Dec 2013 at 19:07

Remove side panel, use a desktop fan to blow directly on GPU's

Bazippy · 27 Dec 2013 at 19:20

spankingtexan said:
Remove side panel, use a desktop fan to blow directly on GPU's

As lovely and beautiful as that sounds erm no, and also with both gpus taking air from the bottom and exiting out the side you just create pressure slowing down the exiting air. Hence feeding it cold air to the fans directly then it can exit its normal route and still have the side on with the exhaust fan taking it out to the room. Will post pictures once its done if it doesnt look like crap.