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SeaSonic S12II 520 Bronze 520W ATX12V V2.3 / EPS 12V V2.91 80 PLUS BRONZE Certified Active PFC Power Supply

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ATX12V V2.3 / EPS 12V V2.91
80 PLUS BRONZE Certified
100 - 240 V

SeaSonic Electronics introduces 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”.

The S12II Bronze Series, similar to its predecessors, is available in the standard ATX Form Factor and in wattages that are most common for a PC system. In addition to the all-in-one cabling design, this 520W model comes with additional EPS connectors for IPC and server systems and supports both 6P & 8P PCI-E connectors for the most current and high end dual graphic cards.

80 PLUS Bronze Certified The 80 PLUS Bronze certified power supply provides high power efficiency of at least 82% at any load between 20% and 100%, saving your money on your electrical bill, reducing heat in your computer's system and prolonging its life.
520W Power with Ample +12V Outputs A max power of 520W delivers safe, reliable output for mainstream to high-end gaming computer systems. Enhanced +12VComb.@40A rail broadens unitization possibilities for feeding today’s energy-hungry CPU and VGA cards.
Japanese Brand Capacitors The SeaSonic S12II 520 Bronze utilizes highly reliable 105C Japanese brand capacitors for exceptional stability and product lifespan.
Efficient Cooling with 12cm Cooling Fan and S²FC The SeaSonic S12II 520 Bronze features a 12cm ball bearing cooling fan coupled with honeycomb construction for increased overall airflow and heat dissipation in the power supply enclosure. SeaSonic’s exclusive S2FC (Smart, Silent Fan Control), combining with soft-mount rubber cushions, helps the fan run quieter and more efficient for the optimal balance between noise and cooling.
Dual PCI-E Connectors With one 6-pin and one 6+2 pin PCI-E connectors, the SeaSonic S12II 520 Bronze allows you to build up a SLI or CrossFire gaming system.

Learn more about the SeaSonic USA S12II 520 Bronze

Model

Brand: SeaSonic

Model: S12II 520 Bronze

Spec

Type: ATX12V V2.3 / EPS 12V V2.91

Maximum Power: 520W

Fans: 120mm ball bearing cooling fan

PFC: Active

Main Connector: 24Pin

PCI-Express Connector: 1 x 6-Pin, 1 x 6+2-Pin

SATA Power Connector: 6

Efficiency: >87%

Energy-Efficient: 80 PLUS BRONZE Certified

Over Voltage Protection: Yes

Input Voltage: 100 - 240 V

Input Frequency Range: 50/60 Hz

Output: +3.3V@24A, +5V@24A, +12V@40A, -12V@0.8A, +5VSB@2.5A

Dimensions: 5.9" x 5.5" x 3.4"

Dimensions & Weight

Dimensions: 3.4" x 5.5" x 5.9"

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

Manufacturer Contact Info

Customer Reviews of the SeaSonic USA S12II 520 Bronze

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Filter Results Last 2 Weeks (0) Last 6 Months (6) All Reviews (87) 66% (57) 14% (12) 6% (5) 6% (5) 9% (8) Verified Owners Video Reviews Mfr. Responses keyword Go page SubmitTopPaginationForm of 9 previousTopPaginationForm\| nextTopPaginationForm
N/A 4/18/2013 6:03:41 PM Tech Level: 4/5 Ownership: 4/5 Verified Owner	Rating: 5/5Good unit Pros: Good value. Works. Reasonably quiet fan. Cons: None noticed. Did you find this review helpful? Thanks for the valuable feedback you provided!
Grover 4/15/2013 6:52:34 AM Tech Level: 4/5 Ownership: 2/5 Verified Owner	Rating: 5/5Seasonic S12 520 watt Pros: This is my third Seasonic PSU all of them excellent low power consumption 80+ is great and Silent. First power PSU is still running strong 9 yrs old in a build for my brother inlaw. Like they say you get what you pay for and Seasonic is worth every penny. This was for my failing Antec 450W workstation PC with upgrades in mind has ample amount of connectors for MB and PCI upgrades. Really like the wrapped cables. I would purchase again! Cons: Has several wrapped cables that I don't need at this time so needed to tuck them in the top DVD bay at the top of the Antec tower. No biggie as I will be using some of them when I upgrade the MB & processor at a later date. Other Thoughts: Really like the Super high efficiency as my personal PC sits idle at times for a long time so cuts down on power usage. Like that it is built to optimize energy utilization and super silent fan. Video card with fan is the only fan I hear of which is getting old have ordered a new Asus fanless card to take care of that issue. Did you find this review helpful? Thanks for the valuable feedback you provided!
JPNSCC 3/16/2013 12:45:02 PM Tech Level: 5/5 Ownership: 4/5 Verified Owner	Rating: 5/5No regrets ! Pros: Very quiet. Feels and looks very well built. So much so, that I now only buy SeaSonic brand power supplies. The 80Plus really does make a difference as well. Cons: Cables are a bit stiff, but nothing that takes away from the eggs! Did you find this review helpful? Thanks for the valuable feedback you provided!
Sal_L 2/25/2013 12:07:34 PM Tech Level: 4/5 Ownership: 2/5 Verified Owner	Rating: 5/5So far so good Pros: Got it at a great price and its still a great price at the time of this posting. Had no issues with cable length although I run a Micro ATX in a Fractal Define Mini Robust cables and nice sleeving. Cons: As others have said the web site is slightly misleading on the 12v rail. It is a split rail at 20A each. Other Thoughts: Will update is issues occur over time Did you find this review helpful? Thanks for the valuable feedback you provided!
N/A 12/17/2012 4:12:57 PM Tech Level: 5/5 Ownership: 5/5 Verified Owner	Rating: 2/5Dead after 1yr 3 months Pros: Nice power supply, have used Seasonic before without issue. Good value for the money Cons: Died after 1 year & 3 months. I expect a PS to outlast most of the components in my system. I have 5 year old supplies still being used in old machines around the house. Other Thoughts: Guess I'll go back to Enermax 0 out of 1 people found this review helpful. Did you? Thanks for the valuable feedback you provided!
N/A 12/10/2012 10:08:56 PM Tech Level: 4/5 Ownership: 2/5 Verified Owner	Rating: 5/5No problems, plenty of connections Pros: Works Cons: None Other Thoughts: I love Seasonic. They make great products. I'm running a pretty powerful system, 8 core 4ghz processor and a 2gb GTX graphics card with no issues at all. Did you find this review helpful? Thanks for the valuable feedback you provided!
sanitarium909109 11/8/2012 8:38:32 AM Tech Level: 4/5 Ownership: 3/5 Verified Owner	Rating: 5/5GREAT PSU!!! Pros: - the S means it's silent! Cons: None so far. Other Thoughts: Was originally going for the M12II (both PSU's are essentially the same price). The M series is modular (which would have been cool), but this S12II had $10 off with free shipping... so went for silent over modular. Did you find this review helpful? Thanks for the valuable feedback you provided!
N/A 11/4/2012 2:55:35 PM Tech Level: 4/5 Ownership: 4/5 Verified Owner	Rating: 5/5 Pros: quiet...works well... Cons: Cable for cpu is a little short for cable management in Tt overseer case.... others are fine... 1 out of 1 people found this review helpful. Did you? Thanks for the valuable feedback you provided!
IIfx 10/21/2012 11:12:16 AM Tech Level: 5/5 Ownership: 3/5 Verified Owner	Rating: 5/5Quiet, Stable, Well Made Pros: Very quiet, even under heavy load. Stays cool! Seems to be a very efficient design. 5 year warranty, Japanese capacitors, thick sleeved cables with solid connectors. Cons: Cost, but anything quality will have some cost. Other Thoughts: Heavy power supply - weight is generally an indicator of quality. Powering an AMD Phenom II x4 3.5ghz, 8gb DDR3, Radeon 5770 after the previous Cooler Master nearly took out the motherboard. Did you find this review helpful? Thanks for the valuable feedback you provided!
N/A 10/17/2012 2:41:32 PM Tech Level: 3/5 Ownership: 2/5 Verified Owner	Rating: 1/5DOA Pros: It arrived Cons: It didn't work. Plugged it into every outlet I could reach, and the fan doesn't even turn on. I believe I was sent a dead power supply Did you find this review helpful? Thanks for the valuable feedback you provided!
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