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SeaSonic USA > 
Item#: N82E16817151058

SeaSonic ECO 300 300W SFX12V (v.3.1) 80 PLUS Certified Active PFC Power Supply

  • SFX12V (v.3.1)
  • 80 PLUS Certified
  • 100 - 240 V 50/60 Hz
  • +3.3V@20A,+5V@20A,+12V1@8A, +12V2@14.5A,-12V@0.8A,+5VSB@2.0A
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Learn more about the SeaSonic USA ECO 300

Model

Brand
SeaSonic
Model
ECO 300

Spec

Type
SFX12V (v.3.1)
Maximum Power
300W
Fans
One 8cm Double Ball Bearing Fan
PFC
Active
Main Connector
20+4Pin
+12V Rails
2
PCI-Express Connector
1 x 6-Pin
SATA Power Connector
2
SLI
No
CrossFire
No
Modular
No
Energy-Efficient
80 PLUS Certified
Input Voltage
100 - 240 V
Input Frequency Range
50/60 Hz
Input Current
5A
Output
+3.3V@20A,+5V@20A,+12V1@8A,
+12V2@14.5A,-12V@0.8A,+5VSB@2.0A
Approvals
CB, CE, FCC, TUV, cUL

Features

Connectors
1 x Main connector (20+4Pin)
1 x 4-Pin ATX 12V
5 x Peripheral
2 x SATA
1 x Floppy
1 x PCI-E

Manufacturer Warranty

Parts
5 years limited
Labor
5 years limited

Quick Info

Warranty

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


Customer Reviews of the SeaSonic USA ECO 300

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  • Charles R.
  • 9/25/2013 6:11:31 AM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year
  • Verified Owner

4 out of 5 eggsLasted 4.5 years

Pros: small, compact, had sata power and additional 12v power for board

Cons: slightly short lived...but it had to support two hard disks and a DVD drive in a hot enclosure.

Did you find this review helpful? Yes No

  • Matthew D.
  • 9/18/2009 12:24:51 PM
  • Tech Level: High
  • Ownership: less than 1 day
  • Verified Owner

5 out of 5 eggsExcellent

Pros: So quiet I can only hear a noise if I take off the case and put my ear next to the fan.

Fits SFX-compatible cases like microATX.

Cons: The basic dimensions of the PSU itself are 125mm x 100mm x 64mm, and the fan housing protrudes an additional 12.5mm from that. It slightly overlaps a corner of my motherboard, which would prevent me from plugging anything into there if that was necessary (which it isn't).

Other Thoughts: I replaced a PSU that sounded like a jet engine, with intensely heated exhaust too. The Seasonic is worlds better. Hopefully it is as reliable as people say.

1 out of 1 people found this review helpful. Did you? Yes No

  • Roger W.
  • 7/21/2009 7:50:37 AM
  • Tech Level: High
  • Ownership: more than 1 year

5 out of 5 eggsClagmaster

Pros: Very well made and reliable power supply.

Power supply is especially well suited for legacy micro-atx cases. Connectors for a peripheral devices are more than adequate for a micro-atx build. Connectors are of perfect length for a micro-atx case.

Power supply is highly reliable.

Cons: No serious cons that would prevent me from buying this power again or recommending this power supply to friends.

The 80mm fan is audible during opertion but not loud.

Other Thoughts: I'm satisfied. My experiences are with the predecessor of this power supply. From what I can make of the specifications and pictures from then and now, this is the same unit upgraded to current SFX12V (v3.1) standards. I feel these comments are applicable.

I purchased this power supply as part of a complete rebuild of my Pastors 10-year old Dell in late 2007. This rebuild consisted of an ASUS M2A-VM 690G mobo, a 65W Athlon X2 4600+ CPU, 2 GB of Mushkin DDR2-800 memory, a Seagate ST3250310AS 250GB harddrive, Pioneer DVR-112D DVD/CD optical drive, and a floppy drive. This was powered by a Seasonic MicroATX-SS300V 300W SFX12V 3.0, the direct predecessor of this power supply. All of this was installed in the original Dell case that would only permit an SFX power supply.

This power supply has functioned in my Pastors PC for nearly 2 years without failure.

Did you find this review helpful? Yes No

  • Michael H.
  • 4/15/2009 4:57:34 AM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsPerfect for my build!

Pros: Stable power output, I sought out an 80 plus unit, and this one has done its job well! Fan is very quiet, but not silent. Temperature stays as cool as can be. SeaSonic has impressed me. Spend the extra dollars and get this quality PSU.

Cons: Fan mount may be too tall for some ITX cases. I ended up making my own case since the PSU was too close to the e8400 and was inhibiting proper ventilation.

Other Thoughts: Powering ZOTAC nForce 630i mini-itx board with e8400. Running nvidia 8400GS (at 1x PCI-e) and 3gb DDR2 @ 800. Western digital Velociraptor 300gb.

Did you find this review helpful? Yes No

  • Rodulfo S.
  • 3/22/2009 11:17:12 AM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsPowerful Little Monster

Pros: Powerful little PSU. Does what it's suppose to do.

Cons: Naw... None.

Other Thoughts: Had to purchase this PSU because the case I was using (HP Pavilion 6635) for my custom pc didn't have any. What can I say, the case is small.

Here's the Atom Project (in newegg item numbers):
- SeaSonic ECO 300 300W SFX12V (v.3.1) 80 PLUS Certified Active PFC Power Supply
- N82E16820231119
- N82E16813121359
- N82E16822148309
- N82E16827135192

Did you find this review helpful? Yes No

  • Naoyuki T.
  • 3/7/2009 8:24:53 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsWorks good, pretty quiet

Pros: High efficienty and quiet. Comes with ATX power supply bracket.

Cons: Fan is pretty quiet, but quieter.

Other Thoughts: I ended up putting it in a standard ATX case, so ATX bracket came in handy.

Did you find this review helpful? Yes No

  • Anonymous
  • 9/3/2008 9:24:12 PM
  • Tech Level: Average
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggspretty good

Pros: it is a nice and heavy unit so it has good quality components. 80 plus certified so its good for the environment and your electricity bill.

Cons: it is bigger than i thought and was no measurements that i saw when i bought it so i cannot use it.

Other Thoughts: .

0 out of 1 people found this review helpful. Did you? Yes No

  • Anonymous
  • 7/17/2008 9:49:21 AM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsPerfect

Pros: Needed more power for a pci geforce 6200 256mb graphics card; (wanted 250watt and I had a ten year old 145watt psu) and this 300watt does the job. Installed unbelievably easy. 80+ is, well a plus to have. Computers draw power even when they're "off", so this SeaSonic will pay for itself eventually.

Cons: Not much quieter than the 145watt I had. Then again, the 145watt wasn't exactly loud.

Other Thoughts: On the box it's listed as being compatible with most E-Machine, HP Pavilion, and Compaq Pressario models.

Did you find this review helpful? Yes No

  • Kevin W.
  • 7/8/2008 8:28:42 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsSmall & Quiet

Pros: Very quiet. More connectors than I need.

Cons: None

Other Thoughts: I bought this to replace a noisy proprietary psu. It fits in the case and is almost silent.

4 out of 4 people found this review helpful. Did you? Yes No

  • Lee S.
  • 3/19/2008 9:07:09 AM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsExcellent/Quiet

Pros: Excellent Power Supply! Very Efficient, very quiet. Cannot tell the computer is even on. The reality is the only way I get to hear any decibels is to put my ear against the power supply (nuts!).

Cons: None.

Other Thoughts: Buy it!

2 out of 2 people found this review helpful. Did you? Yes No

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Power Supplies > 
SeaSonic USA > 
Item#: N82E16817151058
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