GPU Cooling.

[Hydra]

I have a small quandary here. With a single GPU my GPU was hitting 65C under heavy load.

With two GTX980's, one is hitting 60C, and the other is hitting 70C. A), I don't know how bad that is, and B) I'd still like to do something about it.

I'm not keen on going all in for water cooling. Only CPU water coolers are available locally.

My PC case is a Corsair Carbide 540;
http://www.corsair.com/it-it/carbide-se ... -cube-case

Its stock 140mm fans aren't really pushing air by the GPUs, but it is reasonably quiet. However I can replace the two 140mm fans with 3 120mm fans, the lower of which would push air to the GPUs. Its pretty much a straight throw from fan to both GPUs.

Would it make sense to put in 3 120mm high static pressure fans? (Corsair, SP120 Quiet Edition) I've noticed that static pressure fans tend to drive air in a straight line out their exhaust, and frankly the motherboard and everything else is reasonably far away, with an unobstructed path.

Does anyone have any advice on this?

[smicha]

60-70C is a very good temp range for air cooling - I would not touch your cards at all.

Water is good for 3-4 gpus where on air you reach 80-90C quickly and core clocks start to slow down.

Although water can give you great OC results - in todays scores in OctaneBench two best cards are mine on water - titan with 112 and 780 with 107 scores respectively

[Hydra]

Thanks... I don't want to tinker with the cards.

I guess I'm wondering if its worth the effort to improve the airflow to the cards. A) will it work, and B) how much. It costs $60(cdn) to try. Initially with one card in there it was cooler.

Right now, if I crank the card fans it will take it down 10C, buuuut it sounds like a jet engine and really considering the strix ventilation plan, its just recycling hot air.

[smicha]

Yes, it will improve temps. And you don't have to go with high static pressure fans for internal fans. Look rather for something with high airflow. Noctua NFS12 is great and silent, noiseblockers too. Just place one/two fans at a right side of gpus and if possible one in front and bottom.

If you can get 2-4 some fans from a store and ask if you can give them back (just in case if it won't work for you).

If you are looking for silence... watercool'em.

[Hydra]

Yes, it will improve temps. And you don't have to go with high static pressure fans for internal fans. Look rather for something with high airflow. Noctua NFS12 is great and silent, noiseblockers too. Just place one/two fans at a right side of gpus and if possible one in front and bottom.

If you can get 2-4 some fans from a store and ask if you can give them back (just in case if it won't work for you).

If you are looking for silence... watercool'em.

Hmmm... I hadn't considered just plopping one down by the GPUs. That would work, but I don't know how to place the fan. I do know of one fan with a back panel dial which might be fine for my needs. I guess I really just need to push that hot air out.

[smicha]

What about this?

[glimpse]

Another option =) One big fan that blows the air on GPUs =)

image.jpg

https://twitter.com/tomglimps/status/574889522925821952

[smicha]

Another option =) ane big fan that blows the airon GPUs =)

image.jpg

https://twitter.com/tomglimps/status/574889522925821952

I've been waiting for this, Tom

Now, Hydra, it's your turn

[glimpse]

I've been waiting for this, Tom

Sorry,

no wish to hijack Your conversation,
just left another option to consider =)..

[Hydra]

What about this?

Well thank you...

I really should post a picture of my PC.

The spots on the bottom aren't ideal. There's no grill or screw mounts, its open. Its also meant for hard drives. Hmmm... Drive bay fan might be interesting.

The one fan you put in the middle is the one I'm curious about. But its a bit high, and also directly on the motherboard. GPU fans are on the other side of the cards, so literally if its in line with the bottom front 120mm mount, it would be blowing air between the two GPUs and below the GPU.

Hence I was curious about high Static Pressure fans since they blow in a straight line out back.

This is like my set up, only my installer didn't coil up all the wires in front of the fans. The lower card is currently the cooler one.