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Help with airflow - Page 2

post #11 of 18
Thread Starter 
This is what makes me so confused about all this. I really like the low temps that my CPU and motherboard are now getting, but my video card is running around 5-8C hotter at load.

Yeah, it does seem like it's just keeping a pocket of hot air at the bottom with nowhere to go except recycling through the GPU. I really don't like the idea of putting my case under the knife, though .

I'm thinking of getting a fan for the PCI slot (something like this) to exhaust some air from the bottom, but… I don’t know how effective that’ll be either.
post #12 of 18
Quote:
Originally Posted by frenetic1amnesic View Post
This is what makes me so confused about all this. I really like the low temps that my CPU and motherboard are now getting, but my video card is running around 5-8C hotter at load.

Yeah, it does seem like it's just keeping a pocket of hot air at the bottom with nowhere to go except recycling through the GPU. I really don't like the idea of putting my case under the knife, though .

I'm thinking of getting a fan for the PCI slot (something like this) to exhaust some air from the bottom, but… I don’t know how effective that’ll be either.
Those seem to pretty much just move air within the case, although in a poor airflow case i have (Its the same brand as yours) i have one from Best Buy which actually improved theh temps by about 6-7 C, but still.
post #13 of 18
Thread Starter 
Looked around some more, thinking of getting a pair of these Lian Li slot fans.

I only have one video card right now, but I have another 5870 in the mail. I’m thinking I can have one of these two-slot coolers underneath each card exhausting their heat. These might add some noise to the system, but hopefully I won’t need to run them very fast and it’ll in turn let my GPU fans run slower. Those are the noisiest…

EDIT: Hmm… I’m hoping that these fans won’t create a vacuum between it and the GPU fan, making things less efficient than before. This would actually be ideal I think, but having something this big sticking out the back of my case doesn’t seem very feasible.

That, and I might swap my two top fans with a pair of these Noiseblockers for some better intake to match those slot fans.
Edited by frenetic1amnesic - 3/8/11 at 10:53am
post #14 of 18
I have my top fans sucking air into my case and blowing through the zalman fan which is on my cpu towards the back and out the rear with another 140mm. I also have one in the lower front like yours. It seems to do a good job
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homeade
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post #15 of 18
Thread Starter 
Or maybe I can have those two PCI slot fans as intake and put my top fans back as exhaust... hmmm...
post #16 of 18
I find that with intake on the h70, you get better temps on your cpu though.
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post #17 of 18
Thread Starter 
Quote:
Originally Posted by Rakhasa View Post
I find that with intake on the h70, you get better temps on your cpu though.
This is true; my CPU temps go WAY down with the top fans as intake. I’m wondering what the effect will be with those PCI slot fans though. Anyone think it’ll be too close to the GPU fan and create a vacuum between the two, or is this not anything to worry about?
post #18 of 18
Thread Starter 
I found another Lian Li PCI slot fan. It’s a single 140mm fan rather than the dual 120mm from my earlier post. I like this one a lot. The fan sits closer to the back of the case and sticks out sideways a bit more than the video card. It should be able to take heat from the edges (a lot of heat leaks from the side of the GPU) rather than just competing with the fan on the 5870. I think I’m going to try two of these bad boys and see what they can do.
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