Ah, but I have numerous objections to that last statement, Roger. :O) The purpose of fans is to move air. The application of case fans is to create a sort of 'wind tunnel' within the computer case by pulling cool air into the case in the front and exhausting the heated air out the back. For this to work as efficiently as possible, there must be balance between the push & pull. To much intake will create a high pressure system that will cause certain areas of the case to stagnate and eventually overheat. Too much exhaust creates more of a vacuum that will draw air into the case through any crack or crevice it can find and severely weaken the 'wind tunnel' in the process. Both setups also cause the other side to work harder than they should and lead to fans burning out before their time. The best approach is to have an equal amount of air coming in and going out without putting any undo strain on either end. It's also a great idea to make sure that wires, cables and such are as out of the way of the 'tunnel' as possible so they don't impede the flow. And, of course, it's also a good idea to crack open the case once every 6 months or so and clean out the gunk that's collected within, especially on the fan and heatsink fins. Peace, Gman "The only dumb questions are the ones we fail to ask" ----- Original Message ----- From: "Roger" <rcleavitt@xxxxxxxxxxxxx> To: "PCTT" <pctechtalk@xxxxxxxxxxxxx> Sent: Wednesday, September 17, 2008 12:22 PM Subject: -=PCTechTalk=- Case fan deal > Here's an offer you can't refuse! > > 10-Pack Masscool 80mm Case Fan $12.90 Free Shipping, Sep. 17 > > http://www.techbargains.com/news_displayItem.cfm/135075 > > Good chance to load up on spares and extras. Another case fan never > "hoits". > > ------------ --------------------------------------------------------------- Please remember to trim your replies (including this sentence and everything below it) and adjust the subject line as necessary. To unsubscribe or change your email settings: //www.freelists.org/webpage/pctechtalk To access our Archives: http://groups.yahoo.com/group/PCTechTalk/messages/ //www.freelists.org/archives/pctechtalk/ To contact only the PCTT Mod Squad, write to: pctechtalk-moderators@xxxxxxxxxxxxx To join the PCTableTalk off-topic group, send a blank email to: pctabletalk+subscribe@xxxxxxxxxxxxxxxx ---------------------------------------------------------------