Internals

Opening the casing reveals a clean design with a good layout. The phase and neutral conductors as well as the transformer look undersized at first, but the new resonant topology and more active controlled parts allow the manufacturer to use smaller components. Like Seasonic, this PSU has ZVS (Zero Voltage Switiching) that reduces power loss. Moreover, the soft switching is better for EMI.

All capacitors come from Nippon Chemi-Con and there are some all solid ones in the secondary circuit, but the KMR models are a usual choice for high-end PSUs. It would be nice to see some other brands or types; however, all parts are high-quality. There is a line filtering stage in the entrance and many SMDs at the backside of the PCB. The champion IC is on a sister-PCB up top. The overall design definelty looks like an X-460FL with more caps. The only point of criticism is that the fan connector could be glued down, but that's a minor issue at best.

Cables and Connectors Noise Levels
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  • Qbah - Friday, December 3, 2010 - link

    And this thing is amazing. The silence is simply incredible! Best PSU there is IMO.
  • akashagarawal3d - Monday, December 20, 2010 - link

    hi! all of u: i want to know that will it support my system:
    amd phenom 2 x4 965 be @4ghz
    6gb ddr3-1600 mhz kingston ram oc
    msi -890fxa-gd70
    benq g2420hd
    xfx hd 6970 2gb gddr5 950/1400
    will it support my sys.
  • DarkUltra - Sunday, January 23, 2011 - link

    Hi!

    I have horrible squealing when I have high FPS in games (game menus especially) or other type of GPU load. I believe it is a combination of my PSU and graphics card. I've tried two cards and two psus. GeForce gtx 285 and gtx 470 both squeal much more with a Mist 650W rev 4.0 than the Mist 650W rev 3.5. The only difference is that the rev 4.0 have one 50A 12V rail while the quieter rev 3.5 have four 20A 12V rails.

    http://www.bit-tech.net/news/hardware/2009/05/29/m...

    The mists are known to be squealy I heard, but how about the Corsair AX750 80 Plus Gold? Can you try it with a few recent 3d cards? I'm looking for a quiet psu/gpu combo.
  • Nzeman - Wednesday, March 16, 2011 - link

    Thanks for the review, great as always. I will be getting this PSU in my new build for sure.

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