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400W Power Supply w/ PFC

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February 18, 2012 8:24:48 PM

I am building a server. The case I have chosen comes bundled with a 400W PSU. I am certain that the PSU will power the server. My question though, is will I be overburdening the PSU? I have always been of the opinion that it is better to go with a beefy power supply and underutilize it. If someone wants to provide a technical answer, that would be great; however, what I am really looking for is a reality check. Am I being overly sensitive?

Server specs:
1x SUPERMICRO CSE-822I-400LPB Black 2U Rackmount Server Chassis
1x AMD FX-8120 3.1GHz Socket AM3+ 125W Eight-Core
4x 8GB 240-Pin DDR3 1333 (32GB)
2x WD RE4 WD5003ABYX 500GB
1x Motherboard (undecided)
1x GeForce GT 430 Low Profile Video Card (18 Amps on the +12 volt rail)

PSU specs:
400W AC high-efficiency power supply w/ PFC
AC Voltage____100 - 240V, 60-50Hz, 6-2.7 Amp
+5V_________ 30 Amp
+5V standby__ 4 Amp
+12V________ 32 Amp
-12V_________0.5 Amp
+3.3V________25 Amp
Certification___80 PLUS Certified

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a c 158 ) Power supply
February 18, 2012 8:43:29 PM

Based on the your specs, the installed PSU should be more than sufficient to run your server. I doubt you'll be pulling more than 200W at full load. That load level is around 50% of the advertised capability of your PSU...and 50% is usually the around the sweet spot for PSU efficiency.
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February 18, 2012 8:57:48 PM

Best answer selected by TaGaDvAnCe.
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February 18, 2012 10:53:23 PM

Usually psu's that come with cases are unbranded crap, so i suggest you get a new one,
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February 18, 2012 11:00:09 PM

Agree. If your spending that much on a CPU and ram get a separate case and a quality psu. Not some rubbish generic one
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February 18, 2012 11:45:09 PM

seumas_beathan said:
Usually psu's that come with cases are unbranded crap, so i suggest you get a new one,

mtcolley89 said:
Agree. If your spending that much on a CPU and ram get a separate case and a quality psu. Not some rubbish generic one


Generally speaking, I agree with you. At least this PSU is 80+ certified, so it shouldn't be complete crap. The other 2 cases I was looking at are the NORCO RPC-270 and the iStarUSA D-200-PFS which both have mixed reviews. Most 2U cases require a rear facing fan, which is somewhat difficult to find.

If you can find a standalone 2U server chassis with decent airflow and positive reviews, please post a link. In the mean time it looks like the Super Micro chassis is the best option. =\
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a c 158 ) Power supply
February 19, 2012 12:10:41 AM

tagadvance said:
Generally speaking, I agree with you. At least this PSU is 80+ certified, so it shouldn't be complete crap. The other 2 cases I was looking at are the NORCO RPC-270 and the iStarUSA D-200-PFS which both have mixed reviews. Most 2U cases require a rear facing fan, which is somewhat difficult to find.

If you can find a standalone 2U server chassis with decent airflow and positive reviews, please post a link. In the mean time it looks like the Super Micro chassis is the best option. =\

I would normally agree with the generalization about case PSUs not being good...if we were talking about mid/full towers. We're talking about a $200+ server chassis by SuperMicro and they are definitely not the same thing.
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