September, 2010
SPCR :X-400 FL
The Seasonic X-400 Fanless is a superb power supply. It's more than just an X-series PSU without a fan. It stands on its own as a product carefully engineered to serve its function, and it deserves our highest recommendation.

September, 2010
[H]ard OCP :X-400 FL
As such, the X-400FL represents an awesome deal relative to its peers, and an amazing performer in general.

September, 2010
Hardware Secrets :X-400 FL
If you are a user who wants to build a completely silent PC or HTPC (home theater PC) and only demands “the best in class”, the new X-400 Fanless is an option.

September, 2010
PC Perspective :X-400 FL
No fan – no moving parts – no noise!  Like its big brothers, the new X Series 400W fanless PSU incorporates several significant advances in PC power supply design that result in excellent performance, high efficiency and the ability to operate without a fan.

September, 2010
JonnyGuru :X-400 FL
The X-400 fanless is profoundly efficient, extremely stable, and dead silent. There's nothing more that needs to be said - this power supply is definitely worth the money being asked for it.

July, 2010
Xbit Labs :S12II 520, M12II 620 and X 750
Seasonic is a well-known manufacturer of power supply units, its S12 series having been an etalon of a silent PSU. Today I am going to tell you about four products from Seasonic, three of which continue the legendary S12 series: S12-II Bronze (two models with different wattage ratings) and M12-II Bronze. The fourth PSU to be discussed is the first model of the flagship X series called X-750 Gold....

July, 2010
JonnyGuru :X-750
Once again, the Seasonic X Series has come into my lab and impressed......

July, 2010
PC Perspective :SS-300TFX
The Seasonic SS-300TFX is an excellent TFX format power supply.  The PSU delivered very good voltage regulation with good efficiency and maintained clean outputs across a wide range of loads..

June, 2010
JonnyGuru :SS-300TFX
Bland on the outside but spicy on the inside, the Seasonic SS-300TFX is a small form factor unit worthy of some serious consideration if you happen to have a case that requires such a pipsqueak of a unit. It's efficient, it's quiet, and it's extremely stable with its voltage regulation.

Jan, 2010
Hardware Secrets :SS-300TFX
If you want to buy “the best” power supply for your small form factor (SFF) computer based on the TFX12V standard, Seasonic SS-300TFX is the product you should buy.

May, 2010
[H]ard OCP :M12II 620 Bronze
In the power supply realm when consumers think of quiet and efficient power supplies one of the first company that comes to mind is Seasonic and today we have our fourth crack at a Seasonic branded unit. This review marks the launch of Seasonic's newest line of power supplies the "X Series" with the unit we have here today being the M12II-620Bronze.....

April, 2010
JonnyGuru :S12II 520 Bronze
In what is likely the highest scoring group regulated unit I have ever tested, Seasonic has something really special here. A nice, quiet, efficient, and well performing unit that is affordable for just about any budget. Go forth and buy one, loyal readers.

March, 2010
Hardware Secrets :S12II 520 Bronze
Seasonic S12II Bronze 520 W is an excellent power supply. It passed with flying colors in our tests: efficiency between 82.4% and 86.5%, voltages closer to their nominal voltages than required (3% voltage regulation instead of the standard 5%) and ultra-low noise and ripple levels. Plus we could pull up to 588 W from it with efficiency still at 81.7%.

Jan, 2010
THINKCOMPUTERS :X-650
The Seasonic X series is a likely candidate for folks who desire a specific wattage and want a top of the line PSU. Others who are more frugal and perhaps desiring of more wattage should avoid the X series, because it’s nearly $200–and that’s for the 650W version. For that price, one could easily acquire an 850W – 1 kW PC Power and Cooling unit……..