riveter Posted October 22, 2012 Share Posted October 22, 2012 I understand from the product literature that the fan has a sensor and should regulate its speed with temperature changes. My two year old CMPSU-650TX seems not to be regulating itself and seems to be louder than before (I recently changed out my SSD and reinstalled Windows). I regularly blow the dust out of the PC and the noise is not a bad bearing, just higher RPM and airflow than I want. What I want to know is does the CMPSU-650TX use any intelligence from the BIOS or the OS or is it completely self contained in its temperature regulating mechanism? I had heard that some power supplies get intelligence from the motherboard and do not know if this on does. No overclock, no gaming on this PC. Typical temperatures while using web browser: CPU 24 C GPU 34 C Link to comment Share on other sites More sharing options...
peanutz94 Posted October 22, 2012 Share Posted October 22, 2012 Can you run something to stress your system to see if the fan speed changes. Give Prime 95 a shot and see if the fan speeds up. Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted October 23, 2012 Corsair Employee Share Posted October 23, 2012 Are you referring to the TX650 V2? or the regular version? Link to comment Share on other sites More sharing options...
riveter Posted October 23, 2012 Author Share Posted October 23, 2012 Can you run something to stress your system to see if the fan speed changes. Give Prime 95 a shot and see if the fan speeds up. Good idea. I'll do that. Link to comment Share on other sites More sharing options...
riveter Posted October 23, 2012 Author Share Posted October 23, 2012 Are you referring to the TX650 V2? or the regular version? TX650W. Black with gold lettering. I got it in 2010 if that helps. The data label is hidden from view. I will take it out if I need to read the data label. But can you identify it from what I have told you? Which year did the V2 come out? Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted October 23, 2012 Corsair Employee Share Posted October 23, 2012 You have version one; V2 just came out the beginning of this year. And the fan will run all the time but only speed up depending on load and internal Temp Link to comment Share on other sites More sharing options...
riveter Posted October 24, 2012 Author Share Posted October 24, 2012 I ran a torture test and benchmark in Prime95. All cores were fully loaded and running at 3.7 GHz. The system temps went up to a max of 57C on the ITE IT8721F chip Temp#1 (not sure where that sensor is located). But the fan noise did not seem to increase based on sound. I don't suppose there is any way to quantify the fan speed or noise without special test equipment, is there? Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted October 24, 2012 Corsair Employee Share Posted October 24, 2012 I am sorry but no, but if you have an iPhone there is an App to measure the sound level that may help with that. Link to comment Share on other sites More sharing options...
riveter Posted October 25, 2012 Author Share Posted October 25, 2012 Android here. I'll see if there is an app for sound measurement. Thank you. Link to comment Share on other sites More sharing options...
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