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David M · 07-10-2011, 05:34 PM

By putting a positive pressure in your case and having filters over the inlet fans your case will stay much cleaner. With a negative pressure dust gets drawn in through the cracks. There are all kinds of filter elements you can buy such as that for household heaters, vacuum cleaner bags to car air cleaners to most any sort of air filter element you can find.

Since you only have a 420 watt PSU, which is not much waste heat wise, I would consider two inlet fans with filters and one outlet fan. To test the pressure put a piece of Saran Wrap over a crack and see if it gets drawn in or gets blown away.

07-10-2011, 05:34 PM	#14
David M Techphile. Join Date: Nov 2003 Location: San Francisco Bay Posts: 6,550	By putting a positive pressure in your case and having filters over the inlet fans your case will stay much cleaner. With a negative pressure dust gets drawn in through the cracks. There are all kinds of filter elements you can buy such as that for household heaters, vacuum cleaner bags to car air cleaners to most any sort of air filter element you can find. Since you only have a 420 watt PSU, which is not much waste heat wise, I would consider two inlet fans with filters and one outlet fan. To test the pressure put a piece of Saran Wrap over a crack and see if it gets drawn in or gets blown away. __________________ Asus P8P67 WS Revolution \| Intel 2600K @ 4.7 GHz \| Win 7 Pro 64 \|8 gigs Corsair 1600 \| Two Diamond 6990's in Crossfire\| Corsair AX1200 \| Thermalright Silver Arrow \| Western Digital Black 2TB 64 meg cache \| Lian-Li PC-A71B \| Logitec Z-5500 \| Three Asus 26" VW266H monitors running under Eyefinity \| Last edited by David M; 07-10-2011 at 05:42 PM.