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Seasonic Platinum Series Fanless 520 W

Discussion in 'Reviews' started by crmaris, Nov 8, 2012.

  1. crmaris

    crmaris Reviewer

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    Last edited: Feb 23, 2013
    Aquinus, Sihastru and Ikaruga say thanks.
  2. LAN_deRf_HA

    LAN_deRf_HA

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    It's not digital right? Seems to match the regulation and efficiency numbers of the 760i/860i.
  3. crmaris

    crmaris Reviewer

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    nope this is old school, but still manages to register this level of performance.
  4. Frick

    Frick Fishfaced Nincompoop

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    Pretty nice price too!
  5. Ikaruga

    Ikaruga

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    Amazing PSU, but I'm really curious how this thing ages tho.
  6. Chaitanya

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    In cons you mentioned only 2 pci-e connectors. Most of the PSU in this power ratings(500-550W) have only 2 pci-e connectors. Also most people who plan to use this psu wont be using multi-CPU/GPU setup rather a PC with single mid-range graphics card and 2-3 hdds. So personally IMO that is not a con.
  7. crmaris

    crmaris Reviewer

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    the competition (Super Flower Golden Silent 500W and its rebranded versions) provide 4*PCIe
  8. lZKoce

    lZKoce

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    +1 to that. Highly improbable that someone going for a 500W will plug in 4 GPUs or something. I understand the comparison with the competition, but I don't find a con too. Man I want this one. :) I have a CM Silent Pro 500W, and it really is almost inaudible, but fanless..............I'd take that any day.
  9. Melvis

    Melvis

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    Im not sure if im a fan of that lol
  10. blibba

    blibba

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    A lot of cards use two connectors on their own.

    Still, I think the market for passive PSUs for even dual-GPU rigs must be pretty small. It's difficult to make an SLI/CF setup silent. There were passive 6850s, but the 6850 only needs one connector.
  11. scaminatrix

    scaminatrix

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    Way to raise the bar! Titanium efficiency PSU's :p
    Nice review crmaris. I wonder what the extra 5 deg. C on the OTP would let you do?
  12. crmaris

    crmaris Reviewer

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    nothing special. It is just that some extra headroom would be nice. Since the PSU is fanless I expect its temperature to raise significantly in a system with not optimal airflow. And in this case a higher OTP would prevent unexpected restarts or shut downs (assuming that the PSU easily handles 45C internal temp). After all the normal ambient at the internals of a system according to ATX spec is 43C and this is why the latter recommends 50C as max operating temperature.
    scaminatrix says thanks.
  13. Rei86 New Member

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    Oi...that price is just out of this world.

    Picked up a X650 during a egg sale for around 69.99 and found that to be good value for the htpc, saw these fanless PSUs but couldn't justify the price of these things.
  14. pokazene_maslo

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    Thanks for great review. I still wonder why there is no PSU manufacturer that makes PSUs with integrated UPS. Batteries could be stored in 5.25"drive bays. That way unnecessary power conversions could be avoided (UPS is converting 12VDC to 230VAC then power goes to power supply and power supply is converting it back to 12VDC)
    Such solution could be cheaper than dedicated PSU + dedicated UPS. Simply because some unnecessary power conversions could be avoided so less electronics is needed.

    And i have one suggestion, could you please add to reviews if output capacitors can be upgraded and if yes how? Many PSUs share the same PCBs and on lower models are some capacitors not present. By adding the missing capacitors you could cheaply extend hold-up time.
  15. crmaris

    crmaris Reviewer

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    adding caps in the APFC firstly will void your warranty and secondly can cause issues since different caps have also different ESR which will affect the whole design. The manufacturer has tuned the circuit accordingly and the balance can go off rail if you mess with different caps. The same applies to the secondary, too.
    heky says thanks.
  16. Coroner666 New Member

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    Still Kingwin Absolute Platinum 550 W is both more efficient and cheaper
  17. vc9966 New Member

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    #1 in performance

    Only 12V and 5Vsb regulation at 2nd place (lose to AX 860i) all other performance surpass all test units (3.3V/5V regulation, low load/average efficiency, inrush current, acustics noise....)

    I really want one!!

    I feel 2 PCIe is good enough for a 520w unit!!
  18. Liquid Cool

    Liquid Cool

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    Definitely consider the 2 pci-e connectors to be a plus for this size unit. I've owned...or should I say tried to own several of these fanless units from Seasonic. I ended up returning them because of a high pitch hum/whine. About the 3rd unit I tried, I could only hear the high pitch whine from about a foot...but it bothered me that the unit wasn't silent.

    I ended up just going with the 650w units. I've used quite a few of the 650's. The San Ace fans are very quiet when running and the units are virtually dead silent when the fan isn't running.

    Best,

    LC

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