Be Quiet! Straight Power E8 400 W Review 0

Be Quiet! Straight Power E8 400 W Review

Packaging, Contents & Exterior »


Be Quiet! SP-E8 400W Features & Specs
Max. DC Output400W
Efficiency80 Plus Bronze
Operating temperature0°C - 40°C
ProtectionsOver Voltage Protection
Under Voltage Protection
Over Current Protection
Over Power Protection
Over Temperature Protection
Short Circuit Protection
Cooling120 mm be quiet! SilentWings Fan (14.7 dBA max)
Dimensions150 mm (W) x 86 mm (H) x 160 mm (D)
Weight2.01 kg
ComplianceATX12V v2.3
Warranty3 years
Price at time of review€44 ($63)

According to Be Quiet! the fan outputs only 14.7dBA at max RPM, this is a very bold claim indeed even though the fan's max speed is restricted to 910 RPM. Also all protections are incorporated in this unit something that is very good, of course, for the end user. The max operating temperature is only 40°C but we will ignore this and test it at near 50°C. If it fails then we will lower the ambient inside the hot box.

Be Quiet! SP-E8 400W Power Specs
Max. Power24A17A18A18A18A3A0.3A
Total Max. Power400W

Regardless its limited capacity of 400 W, the unit has three +12V rails rated at 18A each. In our opinion, three rails in a such a low capacity unit are a bit much. Two would be more preferable.

Cables & Connectors, Power Distribution

Native Cables
ATX connector (550 mm)20+4 pin
4+4 pin EPS12V/ATX12V (550 mm)1
4 pin ATX12V (550 mm)1
6+2 pin PCIe (550 mm)1
SATA (550 mm+150 mm) / 4 pin Molex (150 mm+150 mm) / FDD (+150 mm)2 / 2 / 1
SATA (550 mm+150 mm) / 4 pin Molex (150 mm+150 mm) / FDD (+150 mm)2 / 2 / 1

Strangely enough the unit is equipped with an 8 pin EPS12V connector and one 4 pin ATX12V. A 4+4 pin connector would do the job just fine so the 4 pin one could be replaced by an additional 6 pin PCIe. Also the choice of a single 6+2 PCIe connector is quite weird. Two 6 pin connectors would improve usability of the PSU quite a bit - there are no graphics cards that have a single 8-pin power input. Regarding the other cables, the PSU is equipped with two quite long cables that incorporate all SATA/Peripheral connectors on them.
Cable length is adequate and the distance between the connectors is sufficient. Finally all connectors use 18 AWG wires.

Power Distribution
12V1ATX, Peripheral, SATA

Power distribution is good since the EPS & ATX12V connectors do not share the same rail with PCIe. Also the 20+4 pin ATX connector, along with all SATA/Peripheral conectors uses a dedicated rail.
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