Corsair RMe Series RM750e review

The RM750e is a 750 W ATX power supply. It is ATX 3.1 certified and PCIe 5.1 compatible, with a +12V rail rated at 62.5 A. It is fully modular, uses a 120 mm fan and carries a 7-year warranty. With one native 12V-2x6 cable and three PCIe 8-pin outputs in total, it suits a single-GPU gaming or workstation build better than a multi-GPU rig.

Corsair describes a resonant LLC topology with DC-DC conversion and 105° rated industrial-grade capacitors. LTT Labs' test page lists OCP, OPP, SCP, OTP, OVP and UVP as present.

Tom's Hardware measured 12V regulation of 1.1% and 12V ripple of 38 mV at full load. Owner and reviewer feedback is less uniform, though. Some raise concerns about ripple suppression and transient response, while others do not. If you plan to pair it with a power-hungry GPU that spikes hard, that mixed picture is worth weighing.

The unit holds a Cybenetics Gold rating, and Corsair claims up to 89% overall efficiency. That is a manufacturer figure, so treat it as a best case.

Owner feedback points to weak low-load efficiency. That matters most for an always-on PC, such as a home server or a workstation that sits near idle for most of the day. For a desktop that spends its time gaming or compiling, Gold-level efficiency under load is the more relevant number. For a machine that idles around the clock, the low-load complaint counts against it.

The fan is a 120 mm rifle-bearing unit with a Zero RPM mode. Owners report quiet operation and say the fan does not spin when the PC is idle. Cybenetics gives it a noise rating of A, according to Corsair's UK page.

Taken together, the zero-fan mode and the owner reports suit a desk-side or living-room build where idle noise is the main concern. Reports of loudness under heavy gaming load are not part of the owner feedback.

Full modularity is the headline here, and owners say it helps with assembly and cable tidiness. The cable set is:

• One native 12V-2x6 (12+4) cable, 650 mm
• One 12V-2x6 to dual PCIe 8-pin adapter-style cable
• One PCIe 8-pin (6+2) cable
• Two EPS 8-pin
• Six SATA

The native 12V-2x6 cable is 650 mm long and sits alongside an adapter-style 12V-2x6 to dual PCIe 8-pin cable. The three PCIe 8-pin outputs in total give an alternative route for a card that uses those connectors. The unit also has two EPS 8-pin connectors. Six SATA connectors are enough for a handful of drives, but a storage-heavy build with many SATA disks would use most of them quickly.

Corsair covers the RM750e for 7 years. That is a long enough term to suit a build you expect to keep through a GPU upgrade or two.

The RM750e offers a complete modern connector set, a quiet fan that stays off at idle and a 7-year warranty. Its weak points are the mixed reports on ripple and transient response, and the low-load efficiency complaints that matter for always-on machines. Owners also describe the price as uncompetitive at MSRP, so the street price decides whether it makes sense. It is a good match for a quiet single-GPU desktop, and a poorer match for a 24/7 low-power server.