Corsair RM Series 750 W 16

Corsair RM Series 750 W Review

Packaging, Contents & Exterior »


Corsair RM750 Features & Specs
Max. DC Output750W
Efficiency80 PLUS Gold
Intel Haswell ReadyYes
Operating temperature0°C - 40°C
ProtectionsOver Voltage Protection
Under Voltage Protection
Over Power Protection
Over Temperature Protection
Over Current Protection
Short Circuit Protection
Cooling135 mm Riffle-Bearing Fan (NR135L)
Semi-passive operationYes
Dimensions150 mm (W) x 86 mm (H) x 180 mm (D)
Weight2.2 kg
ComplianceATX12V v2.4, EPS 2.92
Warranty5 years
Price at time of review (exc. VAT)$129.99

All RM units are 80 Plus Gold certified, and their maximum operating temperature is restricted to 40°C, tough ATX spec recommends at least 50°C. Corsair most likely didn't want to encourage users to push the unit to its limit in high ambient temperatures because of its semi-passive operation and the Chinese caps in the secondary side. All protection features are thankfully present, including OTP (Over Temperature Protection), which will save the PSU if the fan malfunctions. Speaking of the fan: It uses rifle bearings and has a diameter of 135 mm.

With a length of 18 cm, the RM 750 is large for a 750 W PSU. Still, its length won't be a problem for most ATX cases. The RM unit is also compliant with the newest ATX v2.4 spec, so it is Haswell ready, though Intel skipped over its Haswell compliance requirements with this spec to probably add them into the next. Finally, the warranty is quite long at five years, and the price is on par with offerings by the competition.

Corsair RM750 Power Specs
Max. Power25A25A62.5A3A0.8A
Total Max. Power750W

The single +12V rail is strong enough since it can deliver the unit's full power alone, which suits modern systems well as they tend to exploit this rail over all others. The minor rails are also powerful enough with 150 W maximum combined power, while the 5VSB rail is a little stronger than 2.5 A, the minimum current output for a decent PSU on this rail.

Cables & Connectors, Power Distribution

Modular Cables
ATX connector (610mm)20+4 pin
4+4 pin EPS12V (650mm)1
6+2 pin PCIe (600mm+150mm)4
SATA (400mm+95mm+95mm+95mm)8
4 pin Molex (450mm+100mm+100mm+100mm)4
4 pin Molex (450mm+100mm+100mm)3
FDD adapter (+100mm)2
Corsair Link (800mm)1

There are enough PCIe connectors for the capacity of the unit, but we would like an additional EPS connector, which should be present in a 750 W PSU, although it won't be used by the majority of users. There are enough SATA and Peripheral connectors to cover every need. However, the distance between Peripheral connectors is small and should ideally be 13-15 cm. Finally, all connectors use 18AWG gauges, which is the size ATX recommends for most PSUs.

Since this PSU features a single +12V rail, we do not have anything to comment on about its power distribution.
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