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 Post subject: Supermicro SuperServer 5018A-FTN4 Rackmount Server
PostPosted: Tue Mar 04, 2014 8:23 pm 
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http://www.silentpcreview.com/Supermicro_SuperServer_5018A-FTN4


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 Post subject: Re: Supermicro SuperServer 5018A-FTN4 Rackmount Server
PostPosted: Tue Mar 04, 2014 11:29 pm 
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I was definitely interested in rackmounts a good while back, primarily due to their small form factor and standardised mounting. However, the fans were terrible at best, and unfortunately "almost tolerable" seems to be the case today as well.

Good thing that today we've got smart NAS boxes that can take on light server duties. Just miss the mounting options.

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 Post subject: Re: Supermicro SuperServer 5018A-FTN4 Rackmount Server
PostPosted: Wed Mar 05, 2014 2:11 am 
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why you dont try to work with media server program like plex media server with 1 or 2 bluray playback ?
i think of this product for home server to serve 1-2 tv and ipad


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 Post subject: Re: Supermicro SuperServer 5018A-FTN4 Rackmount Server
PostPosted: Wed Mar 05, 2014 8:28 am 
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hhnn wrote:
why you dont try to work with media server program like plex media server with 1 or 2 bluray playback ?
i think of this product for home server to serve 1-2 tv and ipad

Is this a question for the reviewer? Perhaps you didn't notice -- bluray playback from this machine is not possible (unless you're talking about streaming it from this server through the network, which is routine & not worth separate testing). The integrated video is straight VGA unsuitable for anything other than ordinary monitoring. Yes, you could add a video card, but that defeats the low power server purpose. You don't really need anything near this level of performance to run a Plex media server, which can be done even by a NAS box.

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 Post subject: Re: Supermicro SuperServer 5018A-FTN4 Rackmount Server
PostPosted: Sun Mar 09, 2014 3:53 pm 
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Quote:
as the 200W 80 Plus Gold unit inside is only a small step behind a quality external power source.

Why can't internal PSUs be as good as or better than external ones?


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 Post subject: Re: Supermicro SuperServer 5018A-FTN4 Rackmount Server
PostPosted: Mon Mar 10, 2014 7:11 am 
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Olaf van der Spek wrote:
Quote:
as the 200W 80 Plus Gold unit inside is only a small step behind a quality external power source.

Why can't internal PSUs be as good as or better than external ones?

they CAN be, they just hardly ever are. nearly every OEM cuts corners on their included PSU's.

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 Post subject: Re: Supermicro SuperServer 5018A-FTN4 Rackmount Server
PostPosted: Mon Mar 10, 2014 10:12 am 
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80+ Gold isn't cutting corners IMO.
In what way is this one behind a quality external power source.?


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 Post subject: Re: Supermicro SuperServer 5018A-FTN4 Rackmount Server
PostPosted: Mon Mar 10, 2014 10:38 am 
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Olaf van der Spek wrote:
Quote:
as the 200W 80 Plus Gold unit inside is only a small step behind a quality external power source.

Why can't internal PSUs be as good as or better than external ones?

Larry's statement should not be taken out of context -- or maybe he should have made it more explicit that the reference is to EFFICIENCY only. There's a simple reason why the pico + adapter ends up more efficient at the <20W loads. The 200W stock PSU is well below its best efficiency range; maximum efficiency with most PSUs is reached at 50~70% of rated load. The <20W load is below the optimal range for the pico+Seasonic 80W 12VDC adapter, but not quite as much.

A class V AC/DC adapter is rated for maximum 87% efficiency (presumably at 50~70% of max load) while a Gold 80+ is rated for 90% at 50% load & 87% at full load. The picoPSU also has some losses through it -- the 12V line is passed straight through, but the 5V and 3.3V lines are converted from the 12V line, so there's always a loss. Perhaps as little as 5%, but this really means that even at its ideal, peak efficiency, the pico+adapter will always be lower than the 87% of the adapter alone.

If the Supermicro system was loaded up with its maximum hardware complement, and power load reached... say 60-70W or higher, the stock Gold 80+ PSU would likely draw LESS power (a watt or 2 or 3?) than the pico.

NOTE -- I will edit Larry's statement to clarify.

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 Post subject: Re: Supermicro SuperServer 5018A-FTN4 Rackmount Server
PostPosted: Thu Mar 13, 2014 9:20 am 
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Mike C:

Thankf for the clear and simple explanation on how the 80+ ratings are figured.

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 Post subject: Re: Supermicro SuperServer 5018A-FTN4 Rackmount Server
PostPosted: Wed Mar 19, 2014 10:29 am 
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MikeC wrote:
A class V AC/DC adapter is rated for maximum 87% efficiency (presumably at 50~70% of max load)

I understand, so why does nobody put such an adapter into a ATX PSU form factor?


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 Post subject: Re: Supermicro SuperServer 5018A-FTN4 Rackmount Server
PostPosted: Wed Mar 19, 2014 11:18 am 
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Olaf van der Spek wrote:
MikeC wrote:
A class V AC/DC adapter is rated for maximum 87% efficiency (presumably at 50~70% of max load)

I understand, so why does nobody put such an adapter into a ATX PSU form factor?

What's in the adapter is a AC-to-DC converter -- same as in an ATX PSU, except the latter has multiple output DC voltages. The pico adds the other DC lines -- 5V, 3.3V, 5Vsb. Technically, Gold & Platinum 80+ PSUs already outperform a pico + adapter in efficiency at their respective rated outputs.

The reason why a full fledged ATX PSU with high efficiency at 10~60W will not be produced is simple: There is no money in it, and very little energy savings. 98% of people will not pay more -- or even the same price -- for a lower power PSU even if it is higher efficiency. Between a 100W and a 300W ATX PSU Platinum, the cost of manufacturing is the same, the parts difference virtually identical -- maybe even more for the 100W model. And at 10W load, what will be difference be? Probably 1W.

Marketing guys would scream that they can't sell less power in a product that's supposed to deliver power. :roll:

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