looking for quiet PSU

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zenit

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Aug 5, 2004
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i am currently running a core i7 920 system with a evga x58 motherboard, 6 gig ram and nvidia 260gtx video card. Right now i have a OCZ 750watt gamexsomething power supply, however i need to have my computer in the bedroom and it is super loud primarily due to loud PSU. I am looking for something quiet that will run my current rig and that i could possibly expand to a 2nd 260 video card in the future.

WOuld 550-620 watt units be enough? Anything in particular you could recommend me?
 
zenit said:
i am currently running a core i7 920 system with a evga x58 motherboard, 6 gig ram and nvidia 260gtx video card. Right now i have a OCZ 750watt gamexsomething power supply, however i need to have my computer in the bedroom and it is super loud primarily due to loud PSU. I am looking for something quiet that will run my current rig and that i could possibly expand to a 2nd 260 video card in the future.

WOuld 550-620 watt units be enough? Anything in particular you could recommend me?
Click to expand...
i7 with 260SLI & NO OC'ing should draw about 400W, almost all of it +12V amperage so about +12V@ 34A.

Of course OC'ing can increase power consumption by about 10% to 30% & we always want a 30% overhead for cool & quiet operation,
so about +12V@54A is recommended, a "known good" 700W or so PSU.

As Seasonic is the "King of Quiet" & quiet is the primary request:

SeaSonic S12 Energy Plus SS-650HT 650W (Very Quiet)
Max. Combined: +12V@52A
+3.3V@24A,+5V@30A,+12V1@18A,+12V2@18A,+12V3@18A, +12V4@18A,-12V@0.8A,+5VSB@3.0A
$140: http://www.newegg.com/Product/Product.aspx?Item=N82E16817151028

SeaSonic M12D SS-750 750W (Super Quiet) (My #1 Choice!)
Max. Combined: +12V@62A
+3.3V@24A,+5V@30A,+12V1@38A,+12V2@38A,-12V@0.8A, +5VSB@3.0A
$250: http://www.newegg.com/Product/Product.aspx?Item=N82E16817151068

SeaSonic M12D SS-850 850W (Super Quiet) (Overkill, but only $50 more than 750W)
Max. Combined: +12V@70A
+3.3V@24A,+5V@30A,+12V1@40A,+12V2@40A,-12V@0.8A, +5VSB@3.0A
$300: http://www.newegg.com/Product/Product.aspx?Item=N82E16817151067

The following are not as quiet, however they will only get loud when gaming with 260SLI.

PC Power & Cooling S75CF 750W Rated@40C
+3.3V@24A,+5V@30A,+12V@60A,-12V@0.8A,+5VSB@3.0A
$100: http://www.newegg.com/Product/Product.aspx?Item=N82E16817341011

CORSAIR CMPSU-850TX 850W (cheaper than 750W & will be quieter w lower % load)
+3.3V@30A, +5V30A, +12V@70A, -12V@0.8A, +5VSB@3A
$116: http://www.newegg.com/Product/Product.aspx?Item=N82E16817139009

BFG Tech LS SERIES LS-680 680W (good reviews, great warranty, jury is still out for long term)
Max. Combined: +12V@51A
+3.3V@24A,+5V@30A,+12V1@20A,+12V2@20A,+12V3@20A, +12V4@20A,-12V@0.5A,+5VSB@3.0A
$140: http://www.newegg.com/Product/Product.aspx?Item=N82E16817702009

Antec Signature SG850 850W (Quiet Server Grade Delta Build, Ultra High Quality)
Max. Combined: +12V@65A
+3.3V@25A,+5V@25A,+12V1@22A,+12V2@22A,+12V3@25A, +12V4@25A,-12V@0.5A,+5VSB@3.0A
$250: http://www.newegg.com/Product/Product.aspx?Item=N82E16817371018

If you can afford one, the MD12's are the "Kings of Quiet"!

Always Build with the Best.
Dave:)
 
zenit said:
thanks for detailed feedback.
after everything i ended up ordering a refurb 550W seasonic. Could not resist the low price of the unit, and i thikn for now 550W should be enough.

http://www.newegg.com/Product/Product.aspx?Item=N82E16817151049
Click to expand...
With a max combined of only +12V@41A, it will be running very hot & noisy & it will NOT be running 260SLI!

Please learn Wattage is a meaningless form of measurement in selection a PSU,
the amount of current on the "stressed" rails is what counts & your +12V rail will be very stressed.

For cool & quiet operation a max load of 70% or less is always best. 60% being preferred!

If you ever go SLI, you can always add a FSP X3 GPU Booster PSU.

Very Poor Choice, you asked the questions & then ignored EVERYONE'S answers.
Dave:(
 
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