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The unit is nicely finished, with thick paint which proves resistant against rough handling. We ran our screwdriver down the side with a little force and it didn't mark at all.
The large fan is hidden behind a strong honeycomb grill, we will check this out later when we open the unit for analysis.
One side of the power supply is vented to help improve air flow. At the side is a power switch and connector. The company branding is seen underneath this.
The KM3 modular panel has changed completely over the last revision. There is now a ‘hybrid' fan switch which you can toggle on or off – the blue sticker alerts you to this initially and should be removed before using the supply. Seasonic have said this is the industries first ‘advanced three phased thermal control'.
The Hybrid Silent Fan Control provides three operational stages: Fanless, Silent, and Cooling Mode. In addition, there is a switch provided to allow for manual selection between the Seasonic S2FC (fan control without Fanless Mode) and the S3FC (fan control including Fanless Mode).
The power supply looks great from all angles and only measures 160mm x 150 mm x 86 mm (LxWxH), meaning it will fit into any mainstream ATX compliant chassis.
| Seasonic X-Series 850W Power Supply (KM3) |
|||||
|
DC Output
|
+3.3V
|
+5V
|
+12V |
-12V
|
+5Vsb
|
|
Max Output
|
25A
|
25A
|
70A |
0.5A
|
3A
|
| Total Power | 125W | 840W | 6W | 15W | |
| 850W | |||||
70A can be delivered to the +12V rail, plenty of power on tap for demanding gaming systems.
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.