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Seasonic M12II-520 Bronze 520W EPS12V 20/24PIN ATX PFC 80+ Modular 6PIN PCI-E 120mm

Seasonic M12II-520 Bronze 520W EPS12V 20/24PIN ATX PFC 80+ Modular 6PIN PCI-E 120mm - 1
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Seasonic M12II-520 Bronze 520W EPS12V 20/24PIN ATX PFC 80+ Modular 6PIN PCI-E 120mm - 52175_l.jpg Seasonic M12II-520 Bronze 520W EPS12V 20/24PIN ATX PFC 80+ Modular 6PIN PCI-E 120mm - 52175_1.jpg Customer Photos (0)
Seasonic Electronics
Reg. Price: $99.98  CAD
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Part #: M12II-520-Bronze

SKU: 52175
Shipping Weight: 5.6 lbs

Customer Reviews of Seasonic Electronics M12II-520-Bronze

Product reviews on NCIX.com 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 NCIX.com, 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 M12II-520-Bronze reviews.
Experience: 1 Months


High quality build
Good warranty
Price if not on sale
Overall it's a solid, quiet and stable PSU.
But I wouldn't pay full price for it.

Experience: 4 Weeks


Good price on sale
Good warranty
Solid reviews
Monochrome (black) wiring
Manual poor
I bought one of these as a spare since it was on sale for a very reasonable price (about $60) for a unit of this capacity, quality and features. Online reviews were consistently favourable, so it was an easy decision.

In the box, the usual accessories were included: case badge, mounting screws, and power cord (not always included with some PSUs these days). Aside from the modular cables, a little cloth bag for storing extra cables was included.

Although this may not be an issue for most people, or even some people most of the time, I was surprised to see that the modular cables used all black wires. This may be considered more aesthetically pleasing by some, but does make identifying the various leads more difficult, for testing purposes for example. Pretty classic case of function taking a back seat to form, which is a practice that I personally detest in principle. I usually test components after receiving them to ensure that they are functioning correctly, and with a PSU I jump the green power on lead and a black ground lead, then use a multimeter to test voltages. With this PSU I was forced to assume the locations of the required leads and therefore I needed to dig out a motherboard and connect that instead, just to be safe. But no deal-breaker, just an annoyance.

The manual is pretty basic and generic, and contains few pictures or diagrams. This would be particularly useful in relation to connecting the modular cables to the PSU, since what-goes-where is not intuitively obvious. Most people should be able to figure it out, but the purpose of a manual is to make such things clear.

The appearance of the power supply is certainly understated, with virtually no bling whatsoever. Personally, I don't mind this, especially since I have never owned a windowed case so I can't see the PSU once it is installed anyway.

This PSU is fully modular, including the ATX mainboard power cables. I find the latter entirely unnecessary, since connecting it is essential to the use of the PSU anyway. The main ATX cable is the typical mesh-sleeved bundle (and also typically stiff). The other leads are flat unsleeved cables, and they tend to be a tad on the stiff side as well.

Running, I found the unit to be relatively quiet, even testing outside of the case.

All said and done, Seasonic units are usually about as safe a bet as one can get, and this one checked out fine so far. I would definitely buy another at the price I paid, if needed.

Experience: 1 Months


- modular
- very solid and good quality build
- price
After read review about brand for PSU. I decided go with Seasonic. As soon I saw this unit was on sale. I bought it rightaway ($65). Never regret. Installed it without having any issues. product is ROCK SOLID!! Really good.

Experience: 2 Days


Note product photo here is outdated as the unit I received came with fully modular cables (M12II Evo model).

The unit has weight to it suggesting quality components inside I supposed. The build quality is excellent as I really enjoy installing it.

Experience: 2 Months


Modular, Silent, 120mm Fan
Using this PSU in the Silverstone GD05B and have no problem.

Experience: 20 Days


- Great PSU, high quality build
- 5 year warranty
- Modularity
- 4 pin power cable too short
Overall solid PSU. Just don't like the short 4 pin power cable, makes it impossible to run it behind the panel and now end up with a cable hanging next to the motherboard.

Even though it's Seasonic, I wouldn't pay full price for this PSU.

Freedom 42
Experience: 2 Months


quiet (almost silent), modular
pricey if not on sale
got it for $30 after $20 MIR, used in an ATX 65 nm 65W TDP overclocked, single 16X, 4 DDR2, 3 HDD, 2 optical, fan not audible

Experience: 19 Days


As an 80 Plus Bronze unit, it delivers energy to your components efficiently with less of it lost as heat. This unit also has sleeved cables, which makes cable management much easier. Another thing is this unit is partially modular, so again cable management is a breeze. The unit performs quietly at idle and at load; I've yet to hear it despite it being less than 3 feet from me. In terms of aesthetics, its nice and simple without any fancy colours, and will fit in well in most cases.
My only issue with this unit is that the cables seemed short, in particular I had a bit of trouble with the 24-pin connector. Although that may be more the fault of my humongous case and not the PSU itself.
I've always as heard that Seasonic was one of the top PSU makers but the price tag had always stopped me from buying them. After nabbing this baby on sale, I am convinced its worth the regular price tag. I've also realized that I can never go back to non-modular PSUs. Curse you Seasonic. Curse you!

Experience: 1 Weeks


it is a Seasonic
80+ bronze
I have always trusted Seasonic being a quality name as the power supply unit, this one is no difference!

it's quiet, it's stable, it's efficient, and it's easy to use due to a modular design.

and i got it for an incredible price

Yuk Wan_L
Experience: 2 Weeks


Sturdy, Good pricing
Been stable and good for the past 2 weeks. Might upgrade to higher walt later if required.

Product Videos [ Edit ]

Features [ Edit | History ]

Specifications [ Edit | History ]

Type ATX12V V2.3 / EPS 12V V2.91
Maximum Power 520W
Fans 120mm ball bearing cooling fan
PFC Active
Main Connector 24Pin
+12V Rails 2
PCI-Express Connector 1 x 6-Pin, 1 x 6+2-Pin
SATA Power Connector 6
SLI Ready
Modular Yes
Efficiency >87%
Energy-Efficient 80 PLUS BRONZE Certified
Over Voltage Protection Yes
Input Voltage 100 - 240 V
Input Frequency Range 50/60 Hz
Features Over Power / Short Circuit Protection

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Messages about Seasonic M12II-520 Bronze 520W EPS12V 20/24PIN ATX PFC 80+ Modular 6PIN PCI-E 120mm

Dead power supply? (Abercrombie2k- May 09, 10, 4 Replies)

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Reviews from the Web

Below are reviews found on other web sites for this product submitted by customers.

URL: http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story5&reid=185
Comment: Extensive review from JohnnyGuru gives this unit an impressive 9.7/10
Posted by: ShadyGregBrady @05/06/10
Submit a review link   |   Latest 30 reviews

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