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How I cool my PC in the winter!

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February 2, 2010 8:59:46 PM

I wanted to show you what I have done to cool my computer in the winter!

I replaced one of my computer room's windows with a cardboard duplicate, cutting a hole in the lower part of it where I attached a small box to act as a tunnel to let the cold air into the room. My PC case has ventilation holes in the removable side panel, which I measured to correctly place the hole in the faux-window. I lined the PC up to the tunnel and slid a flat cardboard piece between the PC and the tunnel opening, allowing some control over how much air comes in. This is very important because the tunnel should be closed overnight, when it's very cold or damp outside, or when the PC is off. This prevents the components from being damaged, or having difficulty restarting. The PC runs just fine overnight with the side ventilation holes closed, as the temperature on the other side of the cardboard baffle is frigid enough to chill the room air that gets in through the front. I drew some horizontal lines on the board with a marker, measured to let me change the opening from 0 (closed) through ¼, ½, ¾ etc.

In the drawing below, the gray represents duct tape, the blue is the window's channel, the red is the window frame and ledge. The green is a shelf board I attached to the window ledge with a C-clamp to give more room for the PC. I press the PC firmly against the tunnel with the board in between and only a small amount of cold air gets into the room through the vents in the back of the case. I used masking tape on a few of these, making sure not to block the fan exhaust.

I have noticed an improvement in overall system performance, particularly while playing CPU/GPU-demanding games like Grand Theft Auto IV. The video card temperature now hovers around 20°, which allows me to overclock it, and the CPU as well!

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a c 145 K Overclocking
February 2, 2010 9:11:55 PM

Cold front meets warm front ....rain ensues :) 

When you turn off computer, cold interior components meeting warn air inside room can cause condensation. You'll wanna have fans operate for 10 minutes or so after shutting down outside air source.

This dude solved the problem using conditioned air:

http://www.youtube.com/watch?v=Udk-wvGO2Jo&NR=1&feature...

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a b K Overclocking
February 2, 2010 9:28:13 PM

Awesome. That's a pretty good idea. As Jack points out though, you may want to check for condensation.
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February 2, 2010 9:41:30 PM

Thanks a lot! I knew condensation might be an issue, but didn't think of running the fans to clear it out! Great idea! It sounds like just leaving the PC running with the baffle closed for a bit before shutting down will do the trick!

My biggest concern at first was birds getting into the tunnel (no screen on the window I chose) LOL!
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a b K Overclocking
February 2, 2010 10:16:09 PM

We had several posts about this sort of configuration in the past. I think this is the first time someone has actually done it.
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February 2, 2010 10:22:03 PM

I'd put pictures but I don't have a camera - hence the sketch. It has been working well for over a month now!
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a b K Overclocking
February 3, 2010 4:07:53 AM

Kristoffer from XS lives in norway where outside it was -30. He set up his water system to run off of acetone and put his rad through his window.. Great idea!
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a b K Overclocking
February 3, 2010 5:08:55 AM

Yay, I get to use this pic again!

I think I may do another P95 temp bench while its still below -20c here this week, just for the hell of it. One day last week I left the window open while I went to pick up my wife, and it was idling at -2 when I got home 25mins later.

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a b K Overclocking
February 3, 2010 6:15:56 AM

Lol nice one jofa.
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February 3, 2010 6:20:42 AM

Now if I could just figure out how to overclock the CPU... I don't think my board/CPU will allow it. Phenom 9500 quad at 2.2ghz with an ASUS M2A-VM HDMI board.
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February 3, 2010 6:53:23 AM

That CPU won't OC very well. 3Ghz will be lucky.
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February 3, 2010 4:43:03 PM

From what I've been led to believe, any gain would be a plus. As far as I could find out the board doesn't allow it unless I use a hacked bios, which was what killed off my original board so I'm not anxious to try that again!
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