Extremely low ripple and noise.
Very good voltage regulation.
Goes fanless at low loads.
Efficient and quiet.
Great Build Quality.
80Plus GOLD Certified.
A little bit expensive.
Ever so slightly out of spec voltage spike on the 5VSB overshoot transient test.
The cables are a bit stiff to work with and could hurt your fingers a bit.
By X-bit Labs on July 15, 2010
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...-
By JonnyGuru on July 10, 2010
Once again, the Seasonic X Series has come into my lab and impressed. Much like the 650 watt version of this platform, the X-750 is one well performing unit indeed with only a few minor issues to curb its appeal. I'm looking forward to seeing what...95
By AnandTech on June 01, 2010
Few things have influenced product politics as much as 80 Plus Gold. Seasonic was the first manufacturer to list power supplies on its homepage meeting the EPRI (Electrical Power Research Institute) guidelines, and they presented their first certified...-
By Atomic MPC on May 20, 2010
Very quiet, plenty of cables and power, but you’ll pay for...93
By Pureoverclock on March 10, 2010
The X Series 750W power supply looks to continue in the tradition of innovation and quality that that Seasonic is renowned for, and it accomplishes just that, delivering new technologies, solid features, and excellent performance. From a feature...-
By Bjorn3D on February 15, 2010
There are times when new products have to come out, especially after we see tons of other products that copy each other and never improve on their peroformance or efficiency....95
By The Tech Report on January 14, 2010
Seasonic's X Series may have a capacity rating 100 watts lower than the XFX and Enermax units, but it should still be capable of powering a high-end system. 80 Plus Gold certification doesn't come cheap, of course, but the...-
By PCPer on December 01, 2009
Seasonic has certainly raised the bar for others to follow. The new X Series incorporates several significant advances in PC power supply design that result in excellent performance, high efficiency and the ability to operate in silent-fanless mode...-
By PCStats on November 27, 2009
Power supplies which employ Power Factor Correction (PFC, or A-PFC) help ensure efficient conversion of AC to DC voltage, and reduce the amount of energy wasted as heat. That means a quieter 120mm fan can be used, and less noise for your ears....95
By Real World Labs on October 22, 2009
With the X series Seasonic has once more proved the reason why most power supply companies want them to build their units. The black matte color used in this unit is very nice although it may disappoint some trendy computer owners who...-