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Seasonic S12-II 500W Power Supply Review
Seasonic S12-II 500W Power Supply Review - PCSTATS
Abstract: According to the Seasonic label, the +3.3V and +5V rails can both deliver 24 Amps, for a total combined output of 130W. There are two +12V lines, each can output 17 Amps for a combined output of 480W.
Filed under: Power Supply Published:  Author: 
External Mfg. Website: Seasonic Aug 27 2007   Max Page  
Home > Reviews > Power Supply > Seasonic S12-II

Polymer Aluminum Capacitor Inside the S12 II

Seasonic S12 II 500W power supply supports over voltage, over power and short circuit protection in order to protect you, the power supply and the PC system from damage. The S12 II 500W is designed to operate in temperatures between 0-50 degrees Celsius and in relative humidity between 20-80%.

Removing the top cover is as easy as undoing four screws. One is hidden behind the warranty sticker, which means Seasonic will know that you've opened up the power supply if you try and return it. The 120mm ADDA AD1212MB-A71GL 12V fan is detachable and can be replaced quite easily if its bearings eventually dry up and the impeller seizes. The fuse is not user replaceable.

In the motherboard world, capacitor reliability has become a worrisome issue for many users. A couple years back the whole leaking and exploding electrolytic capacitor issue wreaked havoc, and continues to this day to show its bulging, bursting, electrolyte leaking face on older motherboards. If you've ever had weird computer instability problems all of sudden, odds are good it's a burst capacitor.

It is hard to say how much this issue impacts power supplies, but as motherboard manufacturers are buying millions of the conductive polymer aluminum solid capacitors (a more reliable part at elevated temperatures), the price had come down enough that power supply vendors can utilize the technology has well.

Seasonic utilize one conductive polymer aluminum solid capacitor for the 12V rail on the S12 II. It claims this will deliver higher voltage stability and reliability in the long term. If true, it could yield better performance to enthusiasts overclocking their PCs. Whether this truly makes a difference we're not sure.... but using higher quality components is a positive aspect. The remainder of the capacitors in the S12 II range in manufacturers, but of note is one Japanese made Rubycon.

Power load tests are up next.

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Contents of Article: Seasonic S12-II
 Pg 1.  Seasonic S12-II 500W Power Supply Review
 Pg 2.  Appearence and Physical Specifications
 Pg 3.  — Polymer Aluminum Capacitor Inside the S12 II
 Pg 4.  Testing the Seasonic S12 II Power Supply
 Pg 5.  Efficient Power Supply Triumphs over Vanity

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