Is there a way to link a fan rpm monitor to cpu shutdown?

[FishDog3]

In essence this would be a great failsafe. Make a flow monitor out of a fan and than have its rpm monitor hooked to the mobo, that's easy, but is it possible to set it up so that if the fan rpm's drop below a point for a designated amount of time the cpu shuts down, there by preventing it from burning?

Maybe bypass the mobo all together an have a setup that shuts off power if rpms drop?

Just throwing out random ideas, figure this is a good question for all the electricians out there.



fd

[LimeyGreg]

Looking at MBM5 under "fans" there is a minimum setting for fan rpm, at which point the alarm goes off. Further down in that panel there is a check box for "On alarm start application" and yet further down there is a check box for "on alarm start SHDN" which I assume is ShutDown.

[Bad Maniac]

Using MBM:s shutdown features is fine, but you have to be in windows for that. There is a very dangerous period when you boot your computer. If you hsf fan doesn´t work, your cpu will fry ten times over during the time it takes to boot into windows. So the question is a good one, how do you hook a fan rpm meter to the shutdown.

Anyone knows?

[The Stickie]

mmmh my pc boots in 12sec... I KNOW it isn't fried in that time; I have had this once (forgot to attach powerconnetor of hsf) it kept running 15 minutes and then a got a temp warning (back hen I thought: '"it doesn't go wrong with fans": cpu was 73°C (intel specs: 2°C)... and the heatsink was bloody hot... but the cpu survived it (thanks to the heatsink of course)

[el]

yeah you should have enough time to boot before she melts but if you don't login then you are in real danger. some mobo won't boot if you don't have a fan plugged in and spinning in the cpu fan header. Asus I think. maybe you could hack the bios in some fashion.

[FishDog3]

Question answered, thanks