Go Back   Tech Support Forum > Hardware Support > RAM and Power Supply Support

User Tag List

Power supply fan current

This is a discussion on Power supply fan current within the RAM and Power Supply Support forums, part of the Tech Support Forum category. I have a corsair CX600 PSU that's been running fine for 3 years. All of a sudden it became very


Closed Thread
 
Thread Tools Search this Thread
Old 03-31-2016, 08:00 AM   #1
Registered Member
 
Join Date: Jun 2009
Location: United Kingdom
Posts: 11
OS: Arch Linux x86_64



I have a corsair CX600 PSU that's been running fine for 3 years. All of a sudden it became very loud.

The fan inside the PSU was broken, so I replaced it, which fixed the noise issue.

The old fan was 12V and so is the new one.

However the old fan was 0.3A and the new one is 0.16A. Will this be a problem? The new fan does spin (I'm not sure if it spins at the right speed though).
AlexJ136 is offline  
Sponsored Links
Advertisement
 
Old 03-31-2016, 08:37 AM   #2
TSF Enthusiast
 
jimscreechy's Avatar
 
Join Date: Jan 2005
Location: UK
Posts: 1,233
OS: Windows 7 Ultimate

My System

Send a message via MSN to jimscreechy

The 'General' rule of thumb is the more current the fan uses the faster it spins, but the specifications are the only real way of knowing what the RPM or speed is at a standard Voltage (without speed control mechanisms enabled) The more clever PSU also regulate speed based on load or temperature, but this can also be based on the expected load of fan with an 'out of spec' unit, this could still be problematic.

It is normally best to replace 'Like for like' if not in RPM (as you may not know what the original was), then for current rating, this way you to tend to be in a safe haven. If your not 'loading' your PSU its not too much of an issue, but you may not even know what sort of power levels your drawing.

I suppose I'm not really answering the question, but unless you know what your system is pulling current wise, to be on the safe side, I would suggest a similarly spec'd fan.
__________________
Just because you know what you want doesn't mean the plan you have to get it is a good one.
jimscreechy is offline  
Old 04-01-2016, 07:06 AM   #3
Visiting Tech
 
Bill_Bright's Avatar

Microsoft Most Valuable Professional
 
Join Date: Dec 2004
Location: Nebraska, USA
Posts: 1,467
OS: Win10 64-bit Professional

My System


Quote:
Will this be a problem?
Probably not. That just means the maximum current it will pull. Beyond that, it really tells us nothing else because it is the design of the actual motor that then affects how fast it will spin (RPM), and it is the relationship of the RPM plus the blade design (pitch, width, surface area, and length) that then determines the amount of air (CFM) the blades will push (or pull).

Sadly, you told us absolutely nothing about your computer or this PSU so we have no clue the demands your computer may be putting on this PSU, nor do we know the specs/capacity of this PSU to know if it is working near capacity most of the time (thus needing more cooling) or if it is just loafing along most of the time not even breaking a sweat.

Note most (if not all) of the better PSUs have fan speed controllers that adjust the fan speed based on the load encountered or temperature in the PSU. Many will not even spin up the fan until some load/temperature is threshold is crossed to help keep noise levels down. But again, because we don't know what PSU you have, we don't know if yours has a fan speed controller, or if it just runs full speed all the time.

You need to determine the maximum power demands of your computer (motherboard, CPU, GPU, RAM, drives), then determine how much headroom your PSU has. If your computer requires 275W and you only have a 300W supply, that fan may not be able to move enough air to keep the PSU properly cooled. If you have a 600W supply and a 275W load, I doubt the PSU is working hard enough to require more air flow.
__________________
Bill (AFE7Ret)
Freedom is NOT Free!
Windows and Devices for IT, 2007 - 2018

Heat is the bane of all electronics!

───────────────────────────
Bill_Bright is offline  
Closed Thread

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
[SOLVED] Power supply issues
Hey I had a Antec Basiq BP500U running with a ASRock G41M-LE, NVIDIA Geforce 9600 GT, 4giges of ram (which I only recently installed), general dvd drive, 500gb hard drive and 2 extra fans. I had some problems with it every 4 months say, i would have to smack it for the computer to start...
Daniiel RAM and Power Supply Support 27 10-16-2011 10:16 PM
overheating PC - power supply fan died
The fan on my computer power supply broke recently and I am unable to fix it for awhile. I was wondering if I could delay fixing the problem a little. I know this may seem like a really stupid solution and I should just go get a new power supply but could you tell me if this actually would have a...
DarkD Other Hardware Support 3 08-28-2011 06:49 AM
Power Supply Information and Selection
:smile: CHOOSING AND UNDERSTANDING A POWER SUPPLY UNIT The power supply unit in today’s modern computer assumes a role probably more critical than any other single component in your system even when compared to the CPU and motherboard. Therefore, there are multiple factors that must...
Tumbleweed36 RAM and Power Supply Support 0 07-09-2006 03:41 PM

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is on
Smilies are on
[IMG] code is on
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Post a Question


» Site Navigation
 > FAQ
  > 10.0.0.2
Powered by vBadvanced CMPS v3.2.3


All times are GMT -7. The time now is 12:27 PM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Copyright 2001 - 2018, Tech Support Forum

Windows 10 - Windows 7 - Windows XP - Windows Vista - Trojan Removal - Spyware Removal - Virus Removal - Networking - Security - Top Web Hosts