Corsair RM750x Shift ATX v3.1 PSU Review

After the HXi Shift, Corsair released the more affordable RMx Shift series which consists of three members with capacities ranging from 750W to 1000W. This line is ideal for users wanting the side-mounted modular panel, yet don’t want to pay the premium price of the HXi Shift models.

The Corsair RM750x Shift is (or will be) included in my best ATX v3.x & PCIe 5.x PSU picks article.

I’ve already reviewed Corsair’s new HXi Shift models, built by CWT, and now it’s time to take a look at the latest RMx Shift units, manufactured by Great Wall. Corsair highlights several key features for this series, and I’ve listed the most relevant ones below—stripped of any unnecessary marketing fluff.

Easy-Access Connection Position: Modular connections on the side of the PSU mean easier access for your cables and simpler, cleaner cable management
Native 12V-2×6 GPU Cable
Fully Modular Connectors: CORSAIR Type-5 PSU cables
Debossed PVC Cable Kit
140mm Fluid Dynamic Bearing Fan
Zero RPM Fan Mode Support: At low and medium loads, the cooling fan switches off entirely for near-silent operation
Fan Speed Knob: Users have the freedom to adjust the fan speed to their own needs
Cybenetics Gold Certified [They are actually Platinum, but Corsair decided to “downgrade” them]
Intel ATX 3.1 Certified [Verified by Cybenetics]
105°C-Rated 100% Japanese Capacitors
Ten-Year Warranty

As you may notice, Corsair markets these units as Cybenetics Gold, even though they actually achieved a Platinum efficiency rating. To keep its PSU lineup consistent, Corsair chose not to use the Platinum badge. According to Cybenetics’ policy, a brand may use any badge up to the level a product has officially earned—meaning “downgrades” are allowed, but never “upgrades.” Naturally, no company can display a Cybenetics badge unless the product has been tested and certified for it. Typically, this should be the case for all certification agencies. Unfortunately, some still don’t care about “fake” badges, leaving users vulnerable to shady brand tactics (see the Gamdias example).

The MSRP prices of Corsair’s new RMx Shift series PSUs are listed below:

RM750x Shift: $155
RM850x Shift: $170
RM1000x Shift: $210

Check out our top ATX v3.1 PSU guide before purchasing your next PSU.

ATX v3.1 750W PSU Reviews:

Cybenetics PSU Test Database

Best ATX v3.x PSUs

Technical Specifications:

Manufacturer (OEM): Great Wall
Max Power: 750W
Cybenetics Efficiency: [115V] Cybenetics Platinum (89.394%), [230V] Cybenetics Platinum (91.272%)
Noise: [115V] Cybenetics A+ (15.77 dB[A]), [230V] Cybenetics A+ (15.77 dB[A])
Compliance: ATX v3.1, EPS 2.92
Operating Temperature (Continuous Full Load): 0 – 50 °C
Alternative Low Power Mode support: ✓
Power 12V combined: 750W
Number of 12V rails: 1
Power 5V + 3.3v: 120W
Power 5VSB: 15W
Cooling: 140mm Fluid Dynamic Bearing Fan (NR140HP)
Semi-Passive Operation: ✓ (Selectable)
Modular Design: Yes (Fully)
High Power Connectors: 2x EPS (2x cables), 1x 12+2 pin (600W), 4x PCIe 6+2 pin (4x cables)
Peripheral Connectors: 6x SATA (2x cables), 4x 4-pin Molex (1x cable)
ATX Cable Length: 605mm
EPS Cable Length: 650mm
12+2 pin PCIe Cable Length: 650mm
6+2 pin PCIe Cable Length: 650mm
Distance between SATA/4-pin Molex: 105mm
In-cable capacitors: No
Dimensions (W x H x D): 150mm x 85mm x 160mm
Weight: 1.54 kg (3.40 lb)
Warranty: 10 Years
MSRP (excluding VAT): $155

Power Specifications

Rail		3.3V	5V	12V	5VSB
Max. Power	Amps	20	20	62.5	3
Max. Power	Watts	120		750	15
Total Max. Power (W)		750

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Corsair RM750x Shift ATX v3.1 PSU Review

Power Specifications

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