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Old 11-06-2012, 06:08 AM   #1
sorathia
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Default Low power HTPC power supply choice

Hello,

I feel that I should have done a little more research before ordering a power supply. I'm building a lower power HTPC (about 60W or so). At the bottom are the components.

My question is, I got a really good deal ($37, original was $62) on a 600W OCZ PSU, which is 80-PLUS efficiency rated. Then I realized that at 10% the load, the efficiency rate goes down. Does it make sense to return this unit (and loose another $10 bucks on restocking fee) and go with a more expensive 400W FSP Group AURUM, which is 80-PLUS GOLD rated?

Any suggestions would be appreciated!



***************** COMPONENTS ******************

1) Motherboard with integrated CPU/Video - ASUS DDR3 1600 AMD - FM1 Motherboards E45M1-M PRO

2) 8 GB DDR3 RAM - Patriot Memory 8 DDR3 1600 Extreme Performance Viper 3 Series Kit (PV38G160C9K)

3) 2 TB HD - Western Digital Red WD20EFRX 2TB IntelliPower 64MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive -Bare Drive

4) 120 SSD Drive - Kingston HyperX 3K 120 GB SATA III 2.5-Inch 6.0 Gb/s Solid State Drive SH103S3/120G


POWER SUPPLY CHOICES:

1) OCZ ModXStream Pro 600W Modular High Performance Power Supply compatible with Intel Sandy Bridge Core i3 i5 i7 and AMD Phenom

2) FSP Group AURUM GOLD 400W (AU-400) ATX12V /EPS 12V 80PLUS GOLD Certified Compatible with Core i7 Power Supply

***************** COMPONENTS ******************




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Old 11-06-2012, 06:30 AM   #2
Gabriel Torres
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The FSP Group AURUM GOLD 400W is a better choice (higher efficiency). Although, if you have the money, try the new Seasonic Platinum Fanless 520 W that we've just reviewed, it is "perfect" for HTPCs...

http://www.hardwaresecrets.com/artic...ly-Review/1664
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Old 11-06-2012, 06:54 AM   #3
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Thanks for the suggestion!

I'll take a look at the Seasonic Platinum Fanless 520 W PSU...


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Old 11-26-2012, 11:29 AM   #4
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there are several other options:
- new seasonic g-360 Gold. According to knowledgeable ppl, it contains only highest grade components and is very efficient at low loads
- "be quiet!" - any Gold PSU of 400-500W is efficient at low loads. You cannot buy them in US i think, but in EU they are kind of the first choice for low-power systems. be quiet contains slightly cheaper components, but in my tests always used less than seasonic by a marginally 1-2 Watts.
I personally tested several of them and it is amazing how efficient they are.

With your sytem, the idle power would be ~15 watt, with HDD spinned down with any of the above 2 models.
There are gazillion links on EU forums with ppl doing that.

PicoPSU could be a good choice, but it's pricey, not 80+ certified, and probably would not handle couple of extra HDDs, if you ever add them.
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