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post #11 of 17
Quote:
Originally Posted by breenemeister;15557366 
Nice idea on that +rep. My case actually has a black box that attaches to the back of the case covering the slots where the video cards go. You can mount a 120mm fan there to suck out the hot air, but I've never tried it. Others with my case call that device a black box of fail biggrin.gif I don't think it would work as good as your set up because the fan isn't mounted directly against the case.

Not so much a 'black box of fail' as a 'black box of not needed' if you have rear exhausting cards or 'black box of blocking my soundcard' if you aren't using onboard and your mobo doesn't have a PCI over the top PCIe slot. biggrin.gif

As long as the black box isn't made of mesh biggrin.gif , I don't see why it wouldn't work just as well even if the fan is an inch or 3 further away. My fan fits flush to the case on 3 sides but the PCI slots are recessed so the fan is an inch away. I used some black foam to fill that gap at the top. Its not like my mounting is air tight or anything. In fact the fan at the end of the box is probably by design so that you can still have a soundcard etc and the cables routed through and out of the box without fouling the fan.

Its amazing how hot the air is coming out of that fan when the cards are under load. I now shudder to think about that amount of hot air lingering around inside the case even for a few seconds more or being recycled through the CPU cooler/Rad. With this fan its out of the case and never escapes the boundaries of the PCI area of the mobo to heat up anything else never mind get sucked back in by the Twin Frozr intakes.
Quote:
Originally Posted by itchyBlood;15560763 
All I wanted was a reason to get an sli set up, use some tools to drill some holes, and have some fun.

Thanks to your simple mod, it is no more.

Thank you will test it out!

Haha!! You don't know how close you are to the mark!! biggrin.gif I was actually a little disappointed when I fit a replacement 200mm to the front of my case to replace the anaemic stock 200mm and jury rigged the 120mm behind the PCI slots and got these great temperatures straight away on both cards and where the GC fans rarely go above 50%, ie. very quiet. Up to that point I thought I was going to have to do a lot more to get anywhere near those kind of results and had spent weeks worth of free time brainstorming how I could duct airflow from here to there, mount my H100 CPU cooler rad and fans in novel positions with ducted intake and exhaust to ensure it wasn't going to recycle all that internally vented GPU heat etc.

Then I go and try this on a whim and in one fell swoop, rendered all that brainstorming time moot. Luckily I already had all the tools and bits and bobs I would have needed already, so at least I didn't waste any money trying to crack a nut with a sledgehammer biggrin.gif
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post #12 of 17
Quote:
Originally Posted by Calibos View Post
Not so much a 'black box of fail' as a 'black box of not needed' if you have rear exhausting cards or 'black box of blocking my soundcard' if you aren't using onboard and your mobo doesn't have a PCI over the top PCIe slot.

As long as the black box isn't made of mesh , I don't see why it wouldn't work just as well even if the fan is an inch or 3 further away. My fan fits flush to the case on 3 sides but the PCI slots are recessed so the fan is an inch away. I used some black foam to fill that gap at the top. Its not like my mounting is air tight or anything. In fact the fan at the end of the box is probably by design so that you can still have a soundcard etc and the cables routed through and out of the box without fouling the fan.

Its amazing how hot the air is coming out of that fan when the cards are under load. I now shudder to think about that amount of hot air lingering around inside the case even for a few seconds more or being recycled through the CPU cooler/Rad. With this fan its out of the case and never escapes the boundaries of the PCI area of the mobo to heat up anything else never mind get sucked back in by the Twin Frozr intakes.
Actually, the black box sticks out about 6 inches and the exhaust fan goes in the side of it. It's made for a decently flush fit and I don't have a sound card to worry about. My video card exhausts air out of both ends as it's a twin frozr III, too.

To the OP, I've attached a diagram of my case setup for your reference.
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post #13 of 17
nice setup, but i think it'd be overkill for single-card use. my TFIII runs super cool as it is.
post #14 of 17
Quote:
Originally Posted by breenemeister View Post
Nice idea on that +rep. My case actually has a black box that attaches to the back of the case covering the slots where the video cards go. You can mount a 120mm fan there to suck out the hot air, but I've never tried it. Others with my case call that device a black box of fail I don't think it would work as good as your set up because the fan isn't mounted directly against the case.
120mm fans fit back there? I was thinking about putting a 92mm
    
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post #15 of 17
Thread Starter 
Haven't done any drilling or sawing.

With my stock set up and sli'd 460's, I got temps of 67C and 62C under load.

Even with the great input from everyone here and my own temperatures...I still want to drill and saw...this weekend maybe
post #16 of 17
Thread Starter 
Did just a quick test with an 80mm fan on the exhaust of the gpus.

Temps dropped by ~4º-5º C.

Incredible.
Will put in a 92mm fan.
Thanks for the advice guys!
post #17 of 17
Quote:
Originally Posted by itchyBlood View Post
Did just a quick test with an 80mm fan on the exhaust of the gpus.

Temps dropped by ~4º-5º C.

Incredible.
Will put in a 92mm fan.
Thanks for the advice guys!
That sounds like an excellent result for such a small mod.
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