nanoprobe Posted December 31, 2009 Posted December 31, 2009 (edited) I have an Athlon II X4 620 that's been running @ 3.2 GHz for a while without issues. This morning I had CPU-Z running and I noticed something. The cpu voltage, the multiplier and the bus speed will drop and the core speed will show 1GHz for about 10 seconds and then all the settings go back to normal. Seems to happen about every 5 minutes or so. No reboots, BSODs or any other symptom. Core temps are 36-40c on 100% load running BOINC so heat is not an issue. The only thing I can think that would cause this is the PSU. It's an off brand 450w that came with the case when I built this for my dad last year.(It's had cpu and memory upgrades since the original build) No video cards or any other drain on the PSU beyond the HDD, fans and Corsair H-50 cooler. Does this sound like a PSU issue and if it isn't what else could it be? Just for clarification it's not the box in my sig. Edited December 31, 2009 by nanoprobe Share this post Link to post Share on other sites More sharing options...
wevsspot Posted December 31, 2009 Posted December 31, 2009 Do you have any cpu/voltage throttling options enabled in the BIOS? If so, the throttling that you are seeing is normal. It could be a psu issue, but the psu in and of itself isn't capable of throttling your processor. A no name brand 450W psu probably isn't a good decision in the long run regardless Share this post Link to post Share on other sites More sharing options...
PingoPongo Posted December 31, 2009 Posted December 31, 2009 Have you disabled the AMD Cool 'n' Quiet feature in the BIOS? Share this post Link to post Share on other sites More sharing options...
sack_patrol Posted December 31, 2009 Posted December 31, 2009 (edited) Have you disabled the AMD Cool 'n' Quiet feature in the BIOS? +1, what he said disable it and stuff will be as it should be. Edited December 31, 2009 by ballist1x Share this post Link to post Share on other sites More sharing options...
Guest ajmatson Posted December 31, 2009 Posted December 31, 2009 Also disable C1E if it is enabled on your board. This will take off all power saving features from the board. Share this post Link to post Share on other sites More sharing options...
sack_patrol Posted December 31, 2009 Posted December 31, 2009 (edited) Also disable C1E if it is enabled on your board. This will take off all power saving features from the board. Is that good? I mean why is it different from cnq? Edited December 31, 2009 by ballist1x Share this post Link to post Share on other sites More sharing options...
wevsspot Posted December 31, 2009 Posted December 31, 2009 Both of those features can be found in your BIOS configuration menu - third tab over - titled "ADVANCED". Share this post Link to post Share on other sites More sharing options...
nanoprobe Posted December 31, 2009 Posted December 31, 2009 Both of those features can be found in your BIOS configuration menu - third tab over - titled "ADVANCED". Cool N Quiet is disabled. There is no C1E feature to disable that I could find. Mobo is an Asus M2N68-AM SE2. Share this post Link to post Share on other sites More sharing options...
Hedghawg71 Posted January 1, 2010 Posted January 1, 2010 Have you updated your bios lately? If you have that may be the issue and if not maybe you could to test it out to see if it fixes it. Share this post Link to post Share on other sites More sharing options...
Baulten Posted January 1, 2010 Posted January 1, 2010 It's not a PSU issue; the PSU can't throttle the CPU's clock speed or voltage on it's own. I'd imagine it's a throttling feature on your motherboard. Check your manual on info for the board and see if there are any other "power saving" features at work. Share this post Link to post Share on other sites More sharing options...
ocre Posted January 1, 2010 Posted January 1, 2010 If its dropping speed during a cpu load its probably an issue to be concerned with. If its only doin it at idle (not during a cpu load) and its not effecting anything then its probably a power saving result which is okay. It is in no way the PSU, not at all so dont waste any time on that thought. you could try: in the control panel set the power option settings to high performance. then check to see if it throttles down. Share this post Link to post Share on other sites More sharing options...
IVIYTH0S Posted January 2, 2010 Posted January 2, 2010 If its dropping speed during a cpu load its probably an issue to be concerned with. If its only doin it at idle (not during a cpu load) and its not effecting anything then its probably a power saving result which is okay. It is in no way the PSU, not at all so dont waste any time on that thought. you could try: in the control panel set the power option settings to high performance. then check to see if it throttles down. I see no reason to disable power saving when idle (not that my processor idles ever) but I still have all my speedstep and what not enabled Share this post Link to post Share on other sites More sharing options...
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