Delivery and Specifications

The Dark Power Pro 10 is a semi-modular PSU type which means that the ATX 24-pin cable is directly attached to the PSU.

Cables
Cable	Length
1 x ATX 20+4 pin	60  cm
1 x EPS/ATX 12V (8 & 4+4) pin	70 cm
1 x EPS/ATX 12V 4+4 pin	70 cm
1 x EPS/ATX 12V 4 pin	70 cm
3 x PCI-E 6+2 + 6+2 pin	60 cm
1x PCI-E 6 pin	60 cm
1 x 2x SATA + 2x Molex + 1x Floppy	60, 75, 90, 105 cm
2 x 3x SATA	60, 75, 90 cm
1 x 3x Molex	60, 75, 90 cm
1 x 2x Molex + 1 x Floppy	60, 75, 90 cm
1 x 1x Molex	60 cm
1 x 1x Molex	50 cm
1 x 1x SATA	50 cm

The amount of supplied cables that you get with the Dark Power Pro 10 850W is excellent for this power rating. The modular cables provided are top quality, especially the PCI-Express and EPS/ATX cables that are AWG 16 type, quite high-end and quite rare to find with PSUs these days.

Specifications
Voltage	Current	Power
+ 3.3 V	25 A	150 Watt	850 Watt (Total)
+ 5.0 V	25 A
+ 12 V	70 A	840 Watt
- 12 V	0.5 A	6 Watt
+ 5 Vsb	3.0 A	15 Watt

The design of the Dark Power Pro 10 is based on a single 12V rail with a rather impressive 70Amps. However this 12V rail is splitted into four rails in distribution and all four rails are OCP protected individually. In our opinion and experience, it is quite good that be quiet! decided to split the single rail into four different ones, at least for security reasons, and it can be overridden via the included "overclocking key" switch.
Unfortunately, it appears that the four rails are too heavily OCP protected as even with normal usage, it appears that the device goes into OCP status (for example: a 45A rail providing four PCIe 8-pin connectors and connected to two Radeon HD 6990 cards on them makes the device to go into OCP). We would be quite more happy if the be quiet! provided a bit more information regarding the OCP.

The PSU has four 12V rails, two providing 30A and two providing 45A per rail. The be quiet! Dark Power 10 has a so called "overclocking key" switch which simply disables the individual OCP and turns the PSU into a classic single rail design. It simply groups the four individual 12V rails into a single 12V rail but also provides additional risk, although not that great as it would be on a 1'250W PSU.



The Dark Power Pro 10 850W has been 80Plus Platinum certified. This means that the efficiency of the PSU should be above 90% at 20% load, above 92% at 50% load and above 89% at 100% load.

The full feature list includes:

• 80Plus Platinum
• OVP, UVP, OCP, SCP, OPP, OTP
• Dimensions (W x H x D): 150 mm x 86 mm x 190 mm
• 135 millimeter fan
• Warranty: 5 Years
• Price: 220 CHF

be quiet! provides quite exceptional 5-year warranty with the Dark Power Pro 10. Of course, note that the Dark Power Pro 10 is longer than your average PSU with 190mm while most standard ones are at 160mm.

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Page 1 - Presentation

Page 2 - Photo Gallery

Page 3 - Delivery / Specs

Page 4 - A Look Inside

Page 5 - Input/Output Power and Efficiency

Page 6 - Result Analysis and Discussion

Page 7 - Conclusion