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post #2311 of 2861 (permalink) Old 02-02-2016, 08:53 AM
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It's probably looking at TDP. TDP isn't power consumption, but it can give you a rough idea. It stands for "thermal design power" and is the maximum amount of heat a particular component is rated to dissipate.

If they're not looking at TDP, then likely reviews measuring power draw from the wall. Great! Except AC-DC converters are never 100% efficient. A 100W CPU drawing power from an 80% efficient PSU will pull 125W from the wall. That's not enough to be concerned by if you're looking at, say, an 850W PSU, but when you're building a small system, every little bit matters.

There's not really an excuse to do that I don't think. Just get a high-power ammeter to measure current to a particular part. GPUs? That's easy - just measure the current through all the 12V lines. CPUs? A bit more difficult thanks to the VRMs, but you could measure the input to the VRMs (which would be more accurate for a PSU's needs but less accurate for a cooler).

Quote: Originally Posted by TheBadBull View Post
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post #2312 of 2861 (permalink) Old 02-02-2016, 12:15 PM
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post #2313 of 2861 (permalink) Old 02-02-2016, 01:33 PM
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I thought SFX and ATX shared a mount?

Quote: Originally Posted by TheBadBull View Post
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post #2314 of 2861 (permalink) Old 02-02-2016, 02:48 PM
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Quote:
Originally Posted by CynicalUnicorn View Post

I thought SFX and ATX shared a mount?

Nope. SFX is considerably smaller. Left to right, there's the adapter that came with my SX600-G, the SX600-G itself, and a cruddy ATX PSU I pulled out of a Dell a couple weeks back to turn into a bench supply (sorry for potato quality):



Edit: The fact that the tops of the PSUs aren't level, as well as the ATX unit being slightly angled due to non-modularity makes it seem like the difference is a tad bit bigger than what it really is.

Edit 2: Maybe this picture would show the difference better:



Quote:
Originally Posted by iFreilicht View Post

BTW, Silverstone released an adapter plate from SFX- to ATX-PSUs that doesn't suck.

That looks fantastic, thanks! And they announced it at an MSRP of just under $7. Here I was expecting some of that "and all for the generic cost of $19.99" bull crap.

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Heatware: http://www.heatware.com/eval.php?id=101432
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post #2315 of 2861 (permalink) Old 02-02-2016, 03:01 PM
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Originally Posted by iFreilicht View Post

BTW, Silverstone released an adapter plate from SFX- to ATX-PSUs that doesn't suck.

http://www.silverstonetek.com/product.php?pid=631&area=en


Looks like the adapter that came with mySharkoon QB one, but with vents biggrin.gif
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post #2316 of 2861 (permalink) Old 02-02-2016, 03:56 PM
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Looks nice, I need a adapter just like that for my new servers... My server cases take atx psu, but don't have vents for the psu fans.

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post #2317 of 2861 (permalink) Old 02-02-2016, 06:15 PM
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Quote:
Originally Posted by CynicalUnicorn View Post

It's probably looking at TDP. TDP isn't power consumption, but it can give you a rough idea. It stands for "thermal design power" and is the maximum amount of heat a particular component is rated to dissipate.

If they're not looking at TDP, then likely reviews measuring power draw from the wall. Great! Except AC-DC converters are never 100% efficient. A 100W CPU drawing power from an 80% efficient PSU will pull 125W from the wall. That's not enough to be concerned by if you're looking at, say, an 850W PSU, but when you're building a small system, every little bit matters.

There's not really an excuse to do that I don't think. Just get a high-power ammeter to measure current to a particular part. GPUs? That's easy - just measure the current through all the 12V lines. CPUs? A bit more difficult thanks to the VRMs, but you could measure the input to the VRMs (which would be more accurate for a PSU's needs but less accurate for a cooler).

Thanks for the information. So in short, Outervision's PSU calculator does overestimate a bit?

For example; looking at your Osmium build (in your sig), PSU calculator says it requires about 195 watt. But seems that the 120 watt pico PSU works just fine?
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post #2318 of 2861 (permalink) Old 02-02-2016, 08:15 PM
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Quote:
Originally Posted by ignsvn View Post

Thanks for the information. So in short, Outervision's PSU calculator does overestimate a bit?

For example; looking at your Osmium build (in your sig), PSU calculator says it requires about 195 watt. But seems that the 120 watt pico PSU works just fine?

Lolwut? Really? That seems very high. These things pull about 110W from the wall stock and under load.

It's an 80W PSU, actually, but it can peak at 120W for short periods. It's more than enough. Chipset is rated at 5W TDP, RAM uses around 5W, fans should be 5W tops, the SSD is maybe 2W, and that leaves an APU to use up the remaining 65W/105W. Even at stock it would probably be fine (unless I've got Prime95 and Furmark running at the same time), but I've undervolted and downclocked it such that it should be using half the stock power if the math works out.

I suppose if you take two-thirds what the PSU calculator says, you're good. 130W sounds about right with everything at stock speeds and voltage. It hasn't blown up yet, and the inside of that case gets HOT.

Quote: Originally Posted by TheBadBull View Post
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post #2319 of 2861 (permalink) Old 02-03-2016, 07:36 AM
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Hey guys I wanted to submit this for the club even though it isn't finished yet. Its functional right now just really some aesthetic things to change and need to add xfire, but I have another sff project that I want to complete first.




Build log here.


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post #2320 of 2861 (permalink) Old 02-03-2016, 11:43 AM
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Quote:
Originally Posted by timerwin63 View Post

I'm personally a huge fan of "Project Luna":


There's a log with some of his work here, but I couldn't find a full log anywhere.
Here you go smile.gif http://www.sweclockers.com/forum/trad/1356554-laines-luna
Its in Swedish, as its a Swedish guy who made it wink.gif

[Build Log] Cold Devil
Fractal Design Core 1000 Owners Club
Cold Devil
(16 items)
CPU
Intel Pentium G3258 @4.3GHz
Motherboard
Asus Z97 Maximus VII Gene
GPU
EVGA GTX 780 ACX
RAM
Corsair Vengeance Pro
Hard Drive
Samsung 840 250GB
Power Supply
Coolermaster V650S
Cooling
Corsair H100i
Cooling
Scythe AP-15
Case
Fractal Design Core 1000 USB3
Operating System
Windows 10 Home
Monitor
BenQ XL2420T
Keyboard
Logitech G110
Mouse
Razer DeathAdder Chrome
Mouse
QPAD The Gathering 15 Edition
Audio
Philips Fidelio X1
Audio
Fiio E07K Andes
▲ hide details ▲


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