if you don't have it very full of drives/cards, yes, you should be able to get by with less cooling, but you should remember that in the future if you add things. as far as air flow at 7v vs. airflow at 12v, you'd have to look at the power the fan is operating at, which is also a square function of voltage so you'd have 7^2/12^2 or 49/144 or about 34% as much airflow (best case, it's probably a little worse than that), a pretty drastic reduction but it wouldn't surprise me if an under loaded machine could handle it. i still think it's best to just buy a better fan, possibly one with a somewhat reduced airflow. myself, i prefer lots of air as replacement is usually something i can't afford, but it's a personal preference. at the same time, engineers frequently just plop in a fan they hope will be big enough, if things don't melt they're usually happy, so the original fan could easily be oversized even for a full machine. i remember some of the mac II series had a variable speed fan and it did run much slower than full speed in most machines.
David Wasser wrote: > > Philip, > > While I do agree with you that failure rate is related to temperature, I > think I should point out 2 things: > > 1) There have been a lot of posts to this group about altering the existing > fan to run on 7 Volts, instead of 12 Volts. This will effectively reduce the -------- -- "To preserve liberty, it is essential that the whole body of the people always possess arms, and be taught alike, especially when young, how to use them." (Richard Henry Lee, Virginia delegate to the Continental Congress, initiator of the Declaration of Independence, and member of the first Senate, which passed the Bill of Rights.) -- SuperMacs is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Refurbished Drives | Service & Replacement Parts [EMAIL PROTECTED] | & CDRWs on Sale! | Support Low End Mac <http://lowendmac.com/lists/support.html> SuperMacs list info: <http://lowendmac.com/supermacs/list.shtml> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive: <http://www.mail-archive.com/supermacs%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
