KitGuru KitGuru.net – Tech News | Hardware News | Hardware Reviews | IOS | Mobile | Gaming | Graphics Cards
Seasonic are using a very high grade 120mm Sanyo Denki San Ace fan (9S1212F404). This fan uses dual ball bearings to enhance life span and reliability. It is constructed around 7 blades which are sculpted to reduce noise while maintaining a high level of airflow. This same model was also incorporated into the KM2 supply. We have no complaints as this is genuinely one of the best fans that money can buy.
Seasonic are using a new fully modular design and the overall build quality is exceptional. This is a full bridge design compared to the half bridge design on the KM2. This should help improve reliability and efficiency even further. We noticed MOSFET on the daughter card, instead of the main PCB which helps to improve the space utilisation to improve cooling efficiency. There are several little rows of heatsinks to ensure adequate cooling reaches the critical components.
The outputs of the unit are monitored by an integrated circuit which supports over voltage, under voltage and over current protection. There are four OCP channels, two for +12V, one for +5V and another for +3.3V.
Seasonic are using high grade Japanese capacitors throughout the design. The primary stage capacitors are Nippon Chemi Con, rated 420V 330uF @ 105C. Secondary stage capacitors are also high grade 105c rated. This is a power supply focused on quality and subsequently no corners have been cut.
They do rock, no doubt about it !
Very nice indeed. id like to see a review of their 650W or 750W, 850W is a bit overkill for me…… coming soon?
I like the sleeved cables 🙁 didnt know people like the flat ones more…..
@ Mannucuna.
Flat cables are better for routing, some cases have problems housing the fatter cables behind the motherboard tray. I do agree however, the sleeved cables look better, but most people dont want to be looking at them… especially in a windowed case. Its an industry wide move, Seasonic were slow to adopt them.
its confusing because most of the stores dont list these as KM2 or KM3, its a complete guess when they dont include images or detailed information,. they should clearly mark these R3 on the box on the front.
Yes the marketing is confusing. newegg has been shipping the for a while but had the images of the KM2 model.
Minor nitpick about the review. It says “four OCP channels, two for +12V, one for +5V and another for +3.3V”
which makes it sound like it is a two rail PSU. I believe it is a single rail and, like its predecessor, one of the two 12V OCP channels isn’t populated or used.