Hey everyone. I recently finished building a system with a OCZ ModXStream Pro 500W PSU but I've found the fan on it seems to run at full speed the whole time. It can't be a heat issue because my idle temps are 25c for motherboard, 31c for CPU with stock cooler and 26c for overclocked HD 7850. I've looked in the BIOS but there aren't any settings other than for case and CPU fans, which are fine. My motherboard is an ASUS P8H61-MX USB3 and I'm thinking it may have something to do with it somehow overriding the PSUs own fan sensor. There is a BIOS update but do you think that could make a difference (it doesn't mention PSU fans in the description and I really don't want to mess up the system)? Any other ideas about a solution or cause? I don't think the PSU is faulty in any way because the one I swapped it for was doing something similar, which I thought was only because it was poor quality.
PSU fan always on full speed
- Thread starter Will82
- Start date
The thermal management part of the PSU is controlled within the PSU itself. Nothing outside of the PSU has control over it.
Either the PSU is overheating and the fan is maxing out or there is a problem with the internal PSU thermal management. The former should be fixed by better airflow/a good clean. If it is the latter the only solution is an RMA/Replacement.
Either the PSU is overheating and the fan is maxing out or there is a problem with the internal PSU thermal management. The former should be fixed by better airflow/a good clean. If it is the latter the only solution is an RMA/Replacement.
It's quite new so I doubt it's got dirty and it doesn't appear like I do have any heat problems.
It seems then that it's either a faulty PSU or just louder than I thought it would be. The fan noise stays the exact same whether I'm just browsing the web or playing a game for a few hours.
It seems then that it's either a faulty PSU or just louder than I thought it would be. The fan noise stays the exact same whether I'm just browsing the web or playing a game for a few hours.
I'd be tempted to say that it's just the PSU being louder than expected, it is strange it would be on max speed all the time though. From what I can tell from the reviews is that the fan speed is variable and has quite a low minimum setting (500rpm).
Don't suppose you've got a DB meter or a DB meter app to get an idea of how loud it actually is? Then we could compare it to the reviews to judge whether it is 'normal' or not.
Don't suppose you've got a DB meter or a DB meter app to get an idea of how loud it actually is? Then we could compare it to the reviews to judge whether it is 'normal' or not.
Truth is I don't know 100% if it is on max all the time but it never changes and is by far the loudest thing in my case when not gaming. I don't have a DB meter or app so I can't check that.
I just checked speedfan and according to that my chassis fan is at around 970rpm and the CPU about 1030 and they're both a lot quieter than the PSU.
I just checked speedfan and according to that my chassis fan is at around 970rpm and the CPU about 1030 and they're both a lot quieter than the PSU.
Yeah, I'm not sure what to do to be honest. I doubt it is actually faulty and I guess I'm just a bit surprised how loud it is. Perhaps it does increase speed while gaming and I just haven't noticed because of the GPU and CPU fans getting louder. It's about twice as loud as the ten year old Dell Dimension I upgraded from. I can't really be bothered to go down the RMA route because it wasn't that expensive and I don't need the hassle. I'll just stick with it and eventually upgrade to a more silent one because my system seems to be completely stable.
Hadn't thought of that actually and I'd definitely consider it. Is there a particular fan you'd recommend for that job should I decide to do it?
You can pretty much use any 120mm fan but I'd suggest something with a good sleeve bearing (Such as a Noctua) these work better in a warmer environment and last longer 'Upside-down'. Be prepared to solder the connection though as it looks like from this picture the connection is 'Not standard': http://www.overclock3d.net/gfx/articles/2009/01/24144000833l.jpg
I don't have a soldering iron and the price of one alongside a new fan is approaching the cost of the original PSU, so I think I'll just save a little more cash and go for a high end Seasonic PSU or something. Cheers for the advice anyway everyone.
Years ago I bought a 700w Jeantech Blue Storm from a big computer chain as I was caught short. It had a god awful 2000rpm blue neon fan in it. Snipped the wires, twisted and insulation taped the connections on a new fan and problem solved.
That was prob about 6 years ago and it is still going fine today
Edit any low rpm fan will do tbh, any old case fan would work fine in most cases.
That was prob about 6 years ago and it is still going fine today
Edit any low rpm fan will do tbh, any old case fan would work fine in most cases.
I suppose I cut costs getting that particular PSU anyway. It had some decent reviews but you can't really skimp on a PSU without sacrificing something, in this case noise. The system is fully stable and I've yet to have one BSOD or crash in the 3 months I've owned it, so I'm confident it'll be fine until I have enough spare cash to upgrade it.
Annoyingly I also need a new monitor because the DVI-VGA adapter coming from my Sapphire Hd 7850 is causing horizontal lines on a few games, which seems to be a common issue with that card.
Annoyingly I also need a new monitor because the DVI-VGA adapter coming from my Sapphire Hd 7850 is causing horizontal lines on a few games, which seems to be a common issue with that card.