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SeaSonic USA > 
Item#: N82E16817151035

SeaSonic S12 II SS-330GB 330W ATX12V V2.3 80 PLUS Certified Active PFC Power Supply

  • ATX12V V2.3
  • 80 PLUS Certified
  • 100 - 240 V 50/60 Hz
  • +3.3V@18A, +5V@20A, +12V1@17A, +12V2@17A -12V@0.8A, +5VSB@2.5A
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Learn more about the SeaSonic USA SS-330GB

Quick Info

Warranty

  • Limited Warranty period (parts): 5 years
  • Limited Warranty period (labor): 5 years


Customer Reviews of the SeaSonic USA SS-330GB

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  • Earle S.
  • 7/11/2009 3:50:02 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsquiet gem

Pros: Beautifully made, quiet, great cabling and connectors. Will buy more when on sale again.

Cons: Seems a bit pricey at $67.

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  • Roger W.
  • 6/15/2009 6:02:06 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsWell Made, Efficient, Quiet Power Supply

Pros: I goofed the earlier 6/10/2009 review and I invite Newegg to delete it. This is what I really wanted to say about this excellent power supply …

This 330W power supply is well made, very efficient and very quiet. This power supply has excellent build quality. This power supply has a 120mm fan which is well balanced for acoustics and thermal control. I cannot hear the fan while the power supply is operating. This power supply has connectors adequate to support a mainstream PC build. A separate adapter is provided to support up to two Floppy drives.

This power supply offers good quality and value for the price. I feel I got my moneys worth.

Cons: Cables are sized for an ATX mid-tower case and are rather long for a micro-ATX case. I had some difficulty stashing the unused cables in my micro-ATX mid-tower case. If you are building a home theater system with tighter confines, this power supply may not be for you.

A 6-pin PCI-E connector is provided which is seems incredible for a power supply of 330W rating. I do not think this power supply provides adequate current for a system using a mid-range graphics card that requires a 6-pin PCI-E connector. I would suggest the Seasonic SII or MII 430W or 500W power supplies for such a system.

Minor cons I can think of are: lack of modular cables and lack of delayed fan shutoff function – where the fan remains on for 2 minutes after the PC is shutdown to remove heat from the supply case

Other Thoughts: I am well satisfied with this power supply. I use this power supply in a micro-ATX PC that I keep off line for private correspondence, finances and journal.

I have been using this power supply since January 2009 without incident. In my opinion this power supply is reliable.

The Seasonic S12II 330W is well rated in the Anandtech 12/2008 power supply roundup with regard to efficiency, DC voltage regulation and acoustic performance. This power supply contains quality electrolytic capacitors rated for 105C and a solid capacitor in one demanding location. Voltage variation on 12V, 3.3V and 5V rails with changing load is excellent. Efficiency exceeds 85% at 50% load. This is a quality power supply that I am confident will give me years of service.

Seasonic has released a Bronze Certified 330W Seasonic S12II. Specifications between this and the bronze certified power supply are identical; I strongly suspect both are the same unit.

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  • Roger W.
  • 6/10/2009 7:17:47 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggs

Pros: This 330W power supply is very quiet and efficient. This power supply has excellent build quality. This power supply has a 120mm fan which is well balanced for acoustics and thermal control. I cannot hear the fan while the power supply is operating. This power supply has adequate connectors are provided to support a mainstream PC build. A separate adapter is provided to support up to two Floppy drives. This power supply offers very good value for the price.

Cons: Cables are sized for an ATX mid-tower case and are rather long for a micro-ATX case. I had some difficulty stashing the unused cables in my micro-ATX mid-tower case. If you are building a home theater system with tighter confines, this power supply may not be for you.

A 6-pin PCI-E connector is provided which seems incredible for a power supply of 330W rating. This power supply provides adequate current for a system using a mid-range graphics card actually requiring a 6-pin PCI-E connector. I would recommend the Seasonic 430W or 500W power supplies for such a system.

Other Thoughts: I am well satisfied with this power supply. I use the Seasonic S12II 330W power supply in a micro-ATX PC I keep off line for private correspondence, finances and journal. This power supply has been operating since January 2009 without incident. In my opinion this power supply is reliable.

The Seasonic S12II 330W was well rated in the 12/2008 Anandtech power supply roundup with regard to efficiency, DC voltage regulation and acoustic performance. This power supply contains quality electrolytic capacitors rated for 105C and a solid capacitor in one demanding location. Voltage variation on 12V, 3.3V and 5V rails with changing load is excellent. Efficiency exceeds 85% at 50% load. This is a quality power supply that I am confident will provide me years of service.

Seasonic has released a Bronze Certified 330W Seasonic S12II. Since published specifications between this and the bronze certified power supply are identical; I strongly suspect both are really the same unit.

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  • William F.
  • 5/26/2009 10:59:19 PM
  • Tech Level: Average
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsSimply Superb.

Pros: Beautiful, understated construction. High quality in all details. I just couldn't get over the quality for this price. I was dying to open it up, but the 5 year warranty was part of the decision to buy this PSU. Maybe when it pops a cap -- in 8 years or so.
Rock solid rails, within 3% of nominal, no significant response to load changes, DVM showed no significant ripple and it plays nice with a cheap UPS. 80+ efficiency with low watts. Even a tasteful case sticker. Just, .... wow.

Cons: The fan makes very subtle, nearly inaudible, ball bearing noise. No problem in any setting, but still; FDB fans SeaSonic?

Never goes on sale, never even free shipping. I don't do rebates so I don't care about those.

For the first time, NewEgg gets a con from me. It scared the kr@p out of me when I opened this outwardly undamaged shipping box, and found the retail packaging of many components took a lot of damage inside. NewEgg, if your packers have to use plastic peanuts to protect my mobo and other delicate parts from my heavy psu, then go back to peanuts. I don't want RMA's any more than you do, and I keep retail packaging.

Other Thoughts: Do NOT expect this PSU fan to exhaust much air for you. It hardly moves any air at all, but it still feels cool.
See AnandTech's Dec2008 roundup -- I don't disagree with anything said there.

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  • qiang h.
  • 4/13/2009 2:53:10 PM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week

5 out of 5 eggsGreat

Pros: Heavy Unit, looks and feels like my corsair unit. 80+ certified.
APFC. Quality feel.

Cons: Price.

Other Thoughts: Powering
Intel C2D E8300
750GB HDD
Radeon 4550
BDRW
3GB DDR2 800

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  • Jeremy S.
  • 3/31/2009 7:24:23 AM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsGreat PSU

Pros: Easy install. Very quiet operation. Powers mATX MB, DVD, HDD with no problems.

Cons: none

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  • Daryl K.
  • 2/15/2009 7:41:46 AM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggs

Pros: Really nice power supply, I also have the s12 ss-550ht 550w. The 550w is very quiet and you can barely hear the ps at all so I got this 330w version to power another system.

Cons: None at all but it isn't as quiet as the 550w. Seasonic makes good power supplys no problems here.

Other Thoughts: Running an athlon64 3200+ 754 w/ 2gigs kingston ddr 400, 2 wd 320gb sata, evga 7800gs, 2 optical drives, tuner card, netgear ga311 giga-lan card, 120 and 80mm fans. Using a 300w before averaged 89-91w at idle and 110-115w normal and with the 330w 75-80w idle to 95w normal.

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  • James F.
  • 1/30/2009 5:40:13 AM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsQuiet

Pros: Quiet, energy efficient. I am using the fan in the PS to pull air through the cpu cooler. Now the loudest component is my HD. According to my ups, power usage when idle dropped 12-18w over an Antec Basiq 350w.

Cons: I don't like sleeved cables. There are more connectors than I need for a media center box. The SS-300ET would have been a better fit, but I did manage to cram it all in.

Other Thoughts: Silverstone SG02-BF, Asus M3A78-EM, Phenom 9550, Corsair TWIN2X4096-6400C5DHX, Seasonic SS-330GB, Silverstone NT06-E, Rosewill RCR-IC002, Hitachi 7K1000, Vista Ultimate 64bit, APC RS-1000

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  • Tomasz B.
  • 1/22/2009 4:21:47 AM
  • Tech Level: Somewhat High
  • Ownership: less than 1 day
  • Verified Owner

4 out of 5 eggs

Pros: Definitely runs cool.

Cons: Quiet? - Not so much. It moves enough air to cool internal components.

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  • Aaron T.
  • 1/16/2009 1:36:07 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsWorks great in HTPC

Pros: Runs cool and quiet. Very power efficient. Provides enough power for MCE system w/ Athalon BE-2400, GForce 9600GT, Blu-ray, and 2 HDDs.

Cons: None thus far

Other Thoughts: Purchased when building a new MCE box. I was building it to be relatively power conscious and was limited to the space in the case. A 330W power supply was (and has been) sufficient. If you're adding more HDD's and another video card, you'll want a bigger power supply.

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Item#: N82E16817151035
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