bequiet! Dark Power Pro 10 550W Power Supply

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DETAILS

The Dark Power Pro 10 package is extensive, with a huge array of standard parts and accessories. bequiet! is obviously trying hard to make the buyer feel like he's getting lots of value for money.


Clockwise, from the left: There's the PSU itself, then the AC cable, many bundles of output cables, the impressive looking manual, a bunch of zip and velcro ties, a plug to combine all the 12V lines into one, a back panel switch that allows the user to go instantly between multiple and single 12V lines, a set of mounting screws as well as hefty thumbscrews for the same, and four cables to run case fans off the internal thermal controller.


Here's that switch to go between multiple and single 12V lines. The more permanent single 12V line fix is a plug with a loop of wire. It's not clear why anyone would want to toggle back and forth... or ever want four 12V lines.


A shot of the output specs tag.

bequiet! Dark Power Pro 10 550W HIGHLIGHTS
FEATURE & BRIEF Our comment
Virtually silent operation achieved through a broad array of meticulous optimizations, including use of bequiet!’s custom-designed 135mm SilentWings fan OK
SilentWings fan features airflow-optimized fan blades, fluid dynamic bearing with copper core and high quality IC motor controller for the quietest possible operation
OK
80 PLUS Gold certification and up to 93% power conversion efficiency let you do more work with the same power and reduce your power bills 93% is at 220~240VAC
550 Watts of continuous power provide deep power reserves for demanding computing applications
OK
Cable management with extra long cable reach simplifies component installation and reduces annoying clutter, increasing airflow and improving cooling in even the largest PC cases OK
Overclocking key allows switchover between quadruple independent +12V rail mode and high-performance single-rail operation OK
German product conception, design and quality control OK
Dual-layer PSU housing with rubberized sleeve isolates your chassis from PSU noise and vibration, further enhancing silence
Pretty unique.
Up to four case fans can also be connected to and regulated by the PSU, reducing overall system noise even further Haven't seen this feature in a while.
Operating temperature: 0~40°C or 0~50°C?? Features and specs sections contradict.

Safety: CE, CB, TÜV, Nemko, Semko, Fimko, Demko, FCC, cRUus, cTUVus

OK
5 year warranty Great!
180 x 150 x 86 mm
3.5 kg
Much bigger than standard ATX; quite heavy, too.

bequiet! Dark Power Pro 10 550W SPECIFICATIONS
AC Input
100~240VAC, 7~3.5A, 50/60Hz
DC Output
3.3V
5V
12V1-4
-12V
5Vsb
25A
25A
45A
0.5A
3.0A
100W
540W
6W
15W
550W

The operating temperature limit (for rated performance) is stated to be 50° in the general description but 40° in the technical data. In actual use, it should not be a factor either way in a modern PC with good venting for the PSU intake. There are four 12V lines, two limited to a maximum of 25A and two to 20A, but when they're tied together into one, the maximum is just 45A. It's hard to justify the need for multiple 12V rails. Intel (for the ATX12V PSU design guide) gave up on this poorly conceived, safety-driven idea years ago, so why bother making four separate rails on a modest power PSU like this?



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