Fan speed readings

[progiciel]

How accurate are the readings for fan speed? I have an Abit KT7, the fan I had before was a crappy one so I got something a little better (Coolermaster 6H51 or 53), which according to the website has a 4600 RPM fan. However, motherboard monitor only indicates 2700. The reading for the case cooler is 3900, I thought they were all 4500 too. What gives? Should I plug the fans to the power supply connectors, instead of the motherboard, as if the mobo is not supplying enough voltage? Or should I disregard those readings?

Thanks in advance!

 

[progiciel]

^

 

[tonyou]

From my experience, the rpm rating from the manufacturer usually matches or come close to the readings from the motherboard. The biggest discrepency I've seen are a little less than 1000rpm.

You may want to check your fans on another motherboard if you can just to make sure, because ~2000rpm discrepency sounds like too much of a difference to me.

Tony