External Impressions, Cables and Connectors

As mentioned before FSP uses arrow-shaped ventilation holes on all sides. The AU-500FL has a connection panel for modular cables and a description for every plug-type. The rugged and very thick material is strongly reminiscent of some Enermax power supplies. It's too bad that these two golden-colored parts on the top are made out of cheap plastic.

Cables and Connectors

Connector type (length)

Main 1x 24-pin (55cm) fixed
ATX12V/EPS12V 1x 4+4-pin (60cm) modular
PCIe 2x 6/8-pin (55, 65cm) modular
2x 6/8-pin (55, 65cm) modular
Peripheral 3x SATA (ca. 55, 70, 85cm) modular
2x Molex, 1x SATA (ca. 55, 70, 85 cm) modular
2x Molex, 1x SATA (ca. 55, 70, 85 cm) modular
1x FDD adapter (ca. 15cm) modular

Except the main cables with 24 pins all harnesses are removable. The 4+4 pin ATX12V, the 6/8-pin, as well as the peripheral cables are longer than 60cm, which is awesome for anyone with a larger computer case. The first peripheral cable offers three SATA connectors from 55cm to 85cm in 15cm steps. Another harness provides two HDD and one SATA connectors from 55cm to 85cm. The 24-pin motherboard connector is 55cm, which is also nice. The PCIe plug sockets have the same color like the ones for the peripheral components.

Package Contents and Power Rating Internal Design and Components
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  • mtoma - Sunday, April 22, 2012 - link

    Well, all I can say that the value proposition it's relative. For silent PC enthusiasts, it is well, well worth the extra cost. For the others, I say only that the Seasonic units don't accumulate heat (the temperatures are about the same as a HDD with 5400 rpm) and dust.
  • Iketh - Friday, April 20, 2012 - link

    The efficiency results fit the platinum specification, no? What am I missing here?
  • Martin Kaffei - Friday, April 20, 2012 - link

    It's quite close, but you need 90% @ 20% load and 115V and 92 % @ 50% load and 115V. The results for 230V are always higher, but 80Plus works with 115V input.
  • popej - Friday, April 20, 2012 - link

    Basically fanless PSU doesn't make fanless PC. So why bother and pay more?
  • mariush - Friday, April 20, 2012 - link

    It can be nearly inaudible.

    I've mounted an Accelero S1 rev 2 on my Radeon 4850, so it's completely silent.
    The power supply is a Seasonic X-650 which turns off the fan at below about 170 watts of usage.

    So all there's left is the CPU fan which is a low noise 120mm Zerocool fan and a low speed fan cooling down my 4 hard drives.

    This computer is obviously not suitable to be completely silent, due to the heat generated by the hard drives and the old processor (Intel Q6600).

    But, there are AMD and Intel processors that run with just a large heatsink (and even more models would run passively with a bit of downclocking) and if you use a SSD, you then have a completely passively cooled system.

    It's really not that hard to achieve that.... and once you do this, you'll be wondering how you lived for so much time with fans buzzing you constantly.
    I personally spotted the difference (or should i say improvement) caused by lowering the number of working fans in my computer.
  • kmmatney - Friday, April 20, 2012 - link

    I also have an Accelero S1 Rev2 on an HD4890. It can run passively cooled, but I still lashed up a 90 mm fan (with a resistor to reduce speed) just to get a little airflow and peace of mind. I bought several fan resistors years ago, and they allow you to get silence while using cheap fans.

  • ZekkPacus - Friday, April 20, 2012 - link

    It's more than possible to do, though, and in that kind of system this kind of PSU is ideal. Graphics cards are available up to the HD6850 that are passively cooled, plenty of options between the 6570-6770 or the GT440 for nVidia. Any Sandy Bridge CPU 65W or less can be easily passively cooled, either with a Nofen heatsink or a large (Thermalright or Scythe) tower heatsink. Hell there's an i5-2500T (only available OEM, you're not SUPPOSED to be able to buy it retail but you could probably find somewhere that would sell it), quad core CPU with a 45W TDP. SSDs are silent in operation. A good case with enough venting (especially top venting), and the noisiest thing in it would be an optical drive.

    It's very tempting sometimes.
  • Sivar - Friday, April 20, 2012 - link

    I wrote an (ad-free) article about a completely fanless system I built. The case was far less than ideal, but I've since used better cases. It's important to have a fan grill at the top to allow heat to passively rise but it is not required.
    I usually build fanless systems for reliability and low-maintenance (no dust), but I'd not attempt to build a fanless gaming PC. A Geforce 580 would require a heat exchanger the size of another computer case.

  • jwilliams4200 - Friday, April 20, 2012 - link

    NoFan, a Korean company, makes components and complete systems that are entirely fanless. For some reason their products are not sold in the US, but quietpc in the UK carries them:


    The CR95-C "Icepipe" cooler is interesting. It is bigger than the Thermalright HR-02 although less surface area, and seems to be quite a bit more open -- probably a good thing for natural convection cooling. Unfortunately it blocks the first PCIe slot of your motherboard, and it can interfere with the top of your case (I had to cut a bit of metal off the top of my Xigmatek Midgard II case in order to get it to fit)
  • Sivar - Friday, April 20, 2012 - link

    Good link; I've never seen that unit, and I did a lot of searching once the HR-02 became difficult to find. Thanks!

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