Fans On GPU Help Temps? (Specific Set-Up)

[AtramentiA]

Given that the aftermarket cooler for the GTX 280 has still not yet been released, and I always here about airflow going over the GPU is important, I had a question:

If I had two 120mm fans blowing down onto the GPU directly, would it help it's temps?
If so, do you think it would be a noticeable difference?

I'm currently running four side case fans, but would like to move to one 200mm fan again on high (which should move more air and be quieter) as opposed to four 120mm fans on medium, and also reduce the level of the stock GPU fan (which is starting to grate me) speed if possible.

I have an idea for a neat (as in not sloppy) rig to set this up, which would reduce the amount of fans in my case, but should even out in terms of airflow, and possibly (depending on responses here) cool down my GPU a decent amount. However, I have to build it, which I haven't done yet.

Thoughts?

 

[AtramentiA]

Anyone?

I'm not sure as to whether or not two 120mm fans blowing directly down onto the 280 will penetrate enough to make a difference, and I cant test it until I get this little "contraption" built, which is taking some work.

Don't want to move to watercooling, and have been waiting for the aftermarket cooler, which had development problems they're re-working.

Would be nice to drop these temps a bit more, while reducing the plethora of 120mm fans in my case. Just not sure if it's worth the work it's taking to build this thing I'm working on (though I do enjoy building stuff).

Thanks.

 

[lathode]

I personally doubt cooling the backside of the card would do anything. You could always just hold the fans there for a min and see if it lowers the temp. But seeing as how I've never seen a boutique builder or anyone for that matter cool the backside of a vid card I wouldn't bother.

 

[AtramentiA]

Hmmm... actually, I just found something yesterday that *looks* as if it has a similar concept: http://www.newegg.com/Product/Product.aspx?Item=N82E16835192007 though I'm not sure if this is supposed to be mounted above or below the GPU.

I've actually seem someone mod something a while back, that was two 80mm fans (I think) in like a mesh housing, mounted above their GPU. Someone posted a pic of it somewhere, and claimed to have good results with helping cool their GPU, but I cant remember where I saw it.

If having airflow blowing over the top of the GPU from normal side case fans helps, I'd think it'd have some effect... maybe...

Having airflow blowing over the top of a GPU I've always seen mentioned as most important. Might make sense, since the top of GPUs is always where it's felt hottest to me to the touch, even with an aftermarket cooler.

I'll try it and see what happens, if I can the setup right.

 

[Tudz]

On my 8800GTS 320mb, I dropped the temperature a few degrees by blowing a 120mm fan up into the GPU fan. I guess since its a centrifugal fan, you can easily pump extra air into it by blowing another fan at the centre of the existing fan.

Not sure about blowing at the back of the card though, I'm guessing it wouldn't do much though, given the PCB would insulate the heat from the GPU well.

 

[TGA]

Well over the years people have stuck fans most any where you could imagine.

Now after looking at the link to newegg I better understand how you are looking to mount this fan. Personally I wouldn't do it as I like my hot air to rise up and be sucked out of the case.

I think you would be better off with the 120mm fan mounted to the door blowing cool air from out side the case across the card. When I use to overclock I always had a 120mm in the door feeding cool air to CPU cooler, ram, ect.

Anyway I think you would find more help and better ideas in the case mod and cooling section rather then the video card sub forum.

This does however remind me of back in the day when people moded the slim line fans in to the motherboard tray to blow cool air on the back side of the CPU socket. Now I was never convinced this was very useful either but at least a fan back there doesn't mess with airflow in a case.