Modu82+ 625w vs 525w - Any noise difference?

PSUs: The source of DC power for all components in the PC & often a big noise source.

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iencoder
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Modu82+ 625w vs 525w - Any noise difference?

Post by iencoder » Sun Oct 26, 2008 7:26 am

I'm sorry if this has been asked before, but I can't seem to find any solid answers. As you all know, the Modu82+ was well reviewed here as a very quiet PSU. I'd like to purchase the 525W, however it is unclear if it will have the same "noise to wattage" threshold as the 625W. There's quite a price premium between the 525 and the 625 so I'd like to get some feedback how quiet it is.

Tzupy
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Post by Tzupy » Sun Oct 26, 2008 8:03 am

There was an article at Anandtech, Debunking Power Supply Myths, and this page (bottom) may have the information you want:
http://www.anandtech.com/casecoolingpsu ... i=3413&p=6

iencoder
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Post by iencoder » Mon Oct 27, 2008 4:59 am

Tzupy wrote:There was an article at Anandtech, Debunking Power Supply Myths, and this page (bottom) may have the information you want:
http://www.anandtech.com/casecoolingpsu ... i=3413&p=6
Wow, that's exactly what I needed to see. Thanks! :D

According to the graph, the noise threshold will be the same up until about 250W on both Modu82+ PSUs. However:

The Modu82+ 525W fan starts to ramp up around 250W.
The Modu82+ 625W fan starts to ramp up around 310W.

For me, it's probably worth the price premium of the 625W. I'm currently running a Seasonic S12+ with a slightly noisy fan, i.e - slight clicking noises when my system isn't under load. I have to RMA it but will likely give it to the wife.

Anyhow, the Modu82+ 625W would give me more leeway for power hungry passively cooled videocards, such as a 9600GT. As I'm running my E8400 Prime95 stable @ 4Ghz (with a Zalman CPNS9500 < 5v!) but I'm currently limiting myself to a HD2400 due to the low power requirements. This keeps me under 250W on my current PSU, which also increases in noise past that..

Munters
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Post by Munters » Fri Oct 31, 2008 2:23 am

I do use a Modu82+ 525W in my dead silent system,
with a (passive cooled) 3870 Sapphire graphics card and a Q9550 quad core clocked @ 3400 Ghz.
This PSU handles the power need easy, the fan hasn't been spin up from the default 490 rpm yet.
Highly recommended.

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