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Efficient silent Power supply needed

post #1 of 16
Thread Starter 
See my specs, basically an i5-2500/H67, an SSD, 1 Green HDD, 2 black HDD's and an HD6850 (not overclocked).

I have an actic Cooling Freezer Pro 7, which really doesn't cool much better than a stock HSF but it is very quiet with the fan secured to a rubber supension.

For the case I have a single Skythe Slipstream 120mm that runs at a constant 500 rom, it is also very quiet. (My MB can only control the CPU fan speed.)


I use my computer to serve a high end tube headphone rig. The noise level now is OK, but the old circo 2005 Fortron 500W power supply is a bit noisy.


I need about 450W's of power from a PS that has a very quiet fan or is fanless. Also the computer idles/sleeps a majority of the time, so an efeciency figure at low power draw is a must.

Any suggestions?
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post #2 of 16
Well for one any, "loud", psu would be a problem for whoever owns it. They shouldn't make noise. As for a recommendation I'd say:

http://www.newegg.com/Product/Produc...82E16817371035

or

http://www.newegg.com/Product/Produc...82E16817371021

if you wanna go a little stronger. Does have a 120mm fan though.
post #3 of 16
Seasonic X-460 Fanless

Seasonic X-560


The X-560's fan does not turn on until it is loaded (340 W).

Here are the JonnyGuru reviews:

X-560: http://www.jonnyguru.com/modules.php...Story&reid=202

X-400: http://www.jonnyguru.com/modules.php...Story&reid=200

I couldn't find a X-460 review though.
Edited by Riou - 4/25/11 at 2:02am
post #4 of 16
Quote:
Originally Posted by Chuckclc View Post
Well for one any, "loud", psu would be a problem for whoever owns it. They shouldn't make noise. As for a recommendation I'd say:

http://www.newegg.com/Product/Produc...82E16817371035

or

http://www.newegg.com/Product/Produc...82E16817371021

if you wanna go a little stronger. Does have a 120mm fan though.
Stop messing with my head.
post #5 of 16
Quote:
Originally Posted by Riou View Post
Seasonic X460 Fanless

Seasonic X-560


The X-560's fan does not turn on until it is loaded a lot.
Those are very good choices. Gotta admit though, I was price conscious on my recommendations Do you have a budget?
post #6 of 16
Ninjas everywhere
A few fanless ones out there

400w seasonic

460 seasonic

both are 80+ Gold. They are kind of pricey though, the similerly priced seasonics with fans are near dead quiet. I'm not sure if mine has actually ever turned on.
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post #7 of 16
I would go overkill on the PSU, like a nice Corsair HX850W Modular PSU. I like mine, and It is the leas noisy thing in my case. These PSU are about 80-90% efficient at 60% load, single 120mm fan, future proof.
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post #8 of 16
Thread Starter 
Well I don't want a high power model, because when the computer is asleep pulling ~50W the efficiency of the power supply drops significantly. Even when they are certified Bronz 80+ whatever, if the load is only 10% then the efficiency can be only 40%.

Anyway, I don't have a baseline on this. I've had the Fortron 500W since 2005. Its not loud but definately louder than my CPU fan or my case fan.

I would say if I could find a PS that is as quiet as my Scyth 120mm 500rpm fan I would be happy. This would be at a near idle load. I don't care if the fan speeds up and the power supply gets noisy when I play games. Just would like a bit less noise playing music from foobar.

Thanks for the recommendations, it looks like the SeaSonics is the way to go but they are so expensive. I have the money but if I could find a powersupply that has a PWM fan that really spins slow when near idle I think that would be the better way to go ?
Main
(13 items)
 
  
CPUMotherboardGraphicsRAM
i2500 Biostar TH67+ HD 6850 8gb 
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OZC Vertex2 +storage Win7x64 SP1 HP SeaSonic S12II 520W 
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Reply
Main
(13 items)
 
  
CPUMotherboardGraphicsRAM
i2500 Biostar TH67+ HD 6850 8gb 
Hard DriveOSKeyboardPower
OZC Vertex2 +storage Win7x64 SP1 HP SeaSonic S12II 520W 
  hide details  
Reply
post #9 of 16
Thread Starter 
This one caught my attention: Seasonic S12II


Looking at the datasheet, it seems this series has S^2FC fan control which I assume is PWM, thinking it would be very quiet near idle? Datasheet
Main
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CPUMotherboardGraphicsRAM
i2500 Biostar TH67+ HD 6850 8gb 
Hard DriveOSKeyboardPower
OZC Vertex2 +storage Win7x64 SP1 HP SeaSonic S12II 520W 
  hide details  
Reply
Main
(13 items)
 
  
CPUMotherboardGraphicsRAM
i2500 Biostar TH67+ HD 6850 8gb 
Hard DriveOSKeyboardPower
OZC Vertex2 +storage Win7x64 SP1 HP SeaSonic S12II 520W 
  hide details  
Reply
post #10 of 16
Thread Starter 
I ordered the SeaSonic S12II 520W version as it actually shows better efficiency at low load than the 430W version and the price was nearly the same. Only concern is one review said the 520W wouldn't run on his UPS, hope that was just an anamoly.

Thanks for the help
Main
(13 items)
 
  
CPUMotherboardGraphicsRAM
i2500 Biostar TH67+ HD 6850 8gb 
Hard DriveOSKeyboardPower
OZC Vertex2 +storage Win7x64 SP1 HP SeaSonic S12II 520W 
  hide details  
Reply
Main
(13 items)
 
  
CPUMotherboardGraphicsRAM
i2500 Biostar TH67+ HD 6850 8gb 
Hard DriveOSKeyboardPower
OZC Vertex2 +storage Win7x64 SP1 HP SeaSonic S12II 520W 
  hide details  
Reply
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