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Seasonic S12II-620 Bronze 620W EPS12V 20/24PIN ATX Power Supply Active PFC 80+ 6+8PIN PCI-E w/ 120mm

Seasonic S12II-620 Bronze 620W EPS12V 20/24PIN ATX Power Supply Active PFC 80+ 6+8PIN PCI-E w/ 120mm - 1
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Seasonic S12II-620 Bronze 620W EPS12V 20/24PIN ATX Power Supply Active PFC 80+ 6+8PIN PCI-E w/ 120mm - 52174_l.jpg Seasonic S12II-620 Bronze 620W EPS12V 20/24PIN ATX Power Supply Active PFC 80+ 6+8PIN PCI-E w/ 120mm - 52174_1.jpg Customer Photos (0)
Seasonic Electronics

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   Shipping Weight:   5.4 lbs
   Part #: SS-620GB
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Features    [ Edit | History ]

Today, Sea Sonic Electronics launches the S12II "Bronze" Series; the updated version of the award winning S12II Series to meet the growing demand for high efficiency and yet price competitive power supplies.

The S12II Bronze Series achieves the 80 PLUS Bronze standard of at least 82%, 85% & 82% power usage efficiency at 20%, 50% & 100% operating loads respectively. This, combined with Active Power Factor Correction, enables the S12II Bronze to reduce energy waste, boost power efficiency and more importantly, reduce the energy costs for the users.

In addition to the efficiency upgrade, the S12II Bronze Series maintains the strong foundations of the S12II series. Important features such as the stable and proven Double Forward Converter circuit design, the industry leading Smart and Silent Fan Control (S2FC) and the use of high reliability Japanese brand capacitors are all carried forward to the "Bronze".

Quick Specs:
  • IPC
  • Computer
  • Workstation
  • Server
Efficiency 87%
Input Voltage 110 V AC 220 V AC
Output Power 620 W
Limited Warranty 5 Year
Output Voltage 3.3 V DC @ 24 A 5 V DC @ 24 A 12 V DC @ 48 A -12 V DC @ 800 mA 5 V DC @ 2.50 A
Form Factor Internal
Height 3.4"
Width 5.9"
Depth 5.5"
Number of Fans 1
Green Compliant Yes
Green Compliance Certificate/Authority RoHS WEEE 80 Plus Bronze
Number of +12V Rails 1

Specifications    [ Edit | History ]
General Information  
     Brand Name: Seasonic
     Manufacturer: Sea Sonic Electronics Co., Ltd
     Manufacturer Part Number: SS-620GB
     Manufacturer Website Address:
     Product Model: S12II-620
     Product Name: S12II-620 ATX12V & EPS12V Power Supply
     Product Series: S12II
     Product Type: ATX12V & EPS12V Power Supply
     Receptacles: 1 x 20+4pin ATX Motherboard
1 x 4-pin ATX12V Motherboard
1 x 8-pin EPS12V Motherboard
6 x 4-pin LP4 Peripheral Device
2 x 4-pin SP4 Floppy Drive
9 x Serial ATA
1 x 6-pin PCI-E
1 x 6+2pin PCI-E
  • IPC
  • Computer
  • Workstation
  • Server

     Green Compliance Certificate/Authority: RoHS
80 Plus Bronze
     Green Compliant: Yes
Physical Characteristics  
     Depth: 5.5"
     Form Factor: Internal
     Height: 3.4"
     Width: 5.9"
Power Description  
     Input Voltage: 110 V AC
220 V AC
     Input Voltage Range: 100 V AC to 240 V AC
     Number of +12V Rails: 1
     Output Power: 620 W
     Output Voltage: 3.3 V DC @ 24 A
5 V DC @ 24 A
12 V DC @ 48 A
-12 V DC @ 800 mA
5 V DC @ 2.50 A
Technical Information  
     Efficiency: 87%
     Number of Fans: 1
     Power Factor Correction (PFC): Active
     Protection Type: Over Voltage
Over Power
Short Circuit
     Limited Warranty: 5 Year

Seasonic Electronics SS-620GB Customer Reviews

Product reviews on are screened for relevance and inappropriate content. Reviews may contain inaccurate information about the product. If there is a discrepancy, please use the Flag this Review link located beside each review. Reviews are not an endorsement expressed by, but opinions from customers based on their own experience with a product. We do not recommend you make purchasing decisions based on facts or opinions expressed regarding Seasonic Electronics SS-620GB reviews.
Experience: 3 Weeks
 Verified Owner
Runs quiet, bronze 80+, high quality product
No problems so far.
I purchased this power supply as my previous one had leaking capacitors and so far it works really great with no problems. I would highly recommend it to anyone and I am very happy with it.

Experience: 4 Years
Stable, quiet, cool.
Won't run SLI/Xfire dual gpu as there are only 2 pci-e power cables. Not modular.
Going past 4 years now with this PSU & it's been rock stable. PC is on almost 24/7, computer is under heavy loads regularly from graphics apps to gaming & it's always been 100% stable. The current quality of this PSU is outstanding. Powering an old Phenom II 125 watt cpu & GTX 970 without any issues. I would get Seasonic again for my next build.

Experience: 1 Years
-seasonic quality is always there
-not a hiccup since purchase
non-modular but i already knew that from the beginning
Great power supply. Seasonic quality as usual

Experience: 8 Months
Quiet, stable, does what its supposed to do without a hitch. Even handles overclocking very well.
Not modular. This wouldn't be as big of a deal if it didn't have a buttload of cables, this doesn't take an egg off, because you should be able to see that it is indeed not modular. If you really need a modular PSU, go get the modular version.
Has never given me a problem as far as system booting properly, never any random shutdowns or anything in 7 months of moderate gaming use (I do game quite often but work all the time, you know) - looks like I picked a solid component! But...

Experience: 4 Months
 Verified Owner
quiet and doesn't have a smell when operating which is my key criterion.
cable lengths are fine.
none so far
some brands emit a smell...ran across 2 name brands that did this. Guess I have bad luck. But decided to try Seasonic and so far so good.

Experience: 4 Months
 Verified Owner
very quiet
seasonic reliability
5V rail reads around 4.8V
no way to adjust voltages
I always buy Seasonic power supplies because I trust them to be quality built and quiet. This one is no exception.

I am a bit disappointed that I cannot do any adjustments to the voltages. For that reason, I wouldn't buy this model for a system you plan to overclock. Right now, my 5V rail reads only 4.8V in the bios, but honestly I don't know how reliable bios voltage readings are anyway... The PC runs fine with no indication that this is a problem, so it's good enough for my needs.

Experience: 2 Months
 Verified Owner
Great power to price ratio.
None yet
Bought this PSU to replace a dying 5 year old Enermax 500w PSU.

No problems so far.

I was looking at several PSU's in the 600-700w range and the reviews on this unit were very favorable.

Experience: 2 Months
 Verified Owner
- Silent
- 80+
- Inexpensive
- None, it's not modular, but none are modular at this price point
I have been using this PSU in my system for a month now and it is very silent. I am not even sure if the fans are running, as there is barely any dust in my dust filter.

Experience: 10 Days
 Verified Owner
Very cool and reliable
Probably one of the best powersupplys i have every had in my life. It is bronze and probably could be silver for a very good price. Buy this.

Experience: 1 Months
 Verified Owner
Read review
Seasonic is one of the best names in psus and this one is very nicely designed. Cables are of good quality and long enough to reach everywhere.

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Messages about Seasonic S12II-620 Bronze 620W EPS12V 20/24PIN ATX Power Supply Active PFC 80+ 6+8PIN PCI-E w/ 120mm

enough??? (Guiping_Z- Mar 10, 11, 4 Replies) Read this message

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Forum messages are not reviewed and may not contain accurate information about a product. Message contents are opinions from customers based on their own experience with a product. We do not recommend you make puchasing decisions based on Forum messages.
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