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KT7A + high amp fan...how to avoid fan header burnout?

JC

JC

Diamond Member
Hi
I hear those high RPM fans pull like 4A...but my KT7A-RAID needs a fan connected to the CPU fan header, right? What do I do, use a 4-pin adapter for the fan, and hook up...some other 3-pin fan...to the CPU fan header? Obviously, people get around this.
thanks
JC
 
4 amps at 12 volts? I should hope not...that's 48Watts! Monster fan...

I think you are confusing 4A with 4 watts which is what the Delta fan pulls. This is probably too much current for the mobo headers so you have to go with the 4-pin Molex connector. If you really want the RPM monitoring, I guess you could hook a jumper wire from the RPM pin to the motherboard while powering the fan directly from the PSU.
 
If you upgrade to the latest bios version, you won't have that problem. Bios wz and above give the following upgrade "Adds an option to enable/disable the CPU protection (fan1 error checking) function and changes the default setting to disabled. "

Of course, this comes with some luggage that you may not want, such as some new bugs.

Here is the option I am taking. If you go with the four pin fan hooked to the power supply, buy a three pin case fan. I bought a sunon, rpm sensing one, along with a three pin extension, and ran it to the m/b fan header.
 
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