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Hands-on with Corsair’s new RMx Shift power supply

Corsair has done something dramatic with the design of their new Corsair RMx Shift ATX 3.0 power supply, by shifting the connectors from the end to the side. While that ‘Shift' play on words is an awful pun it is also an accurate description that is illustrated in our video.

Watch video via Vimeo (below) or over on YouTube at 2160p HERE

Time Stamps

00:00 Intro
00:32 Leo recaps Corsair previous PSU designs
01:40 Introducing the RMx Shift
02:36 AX1600i Build
04:15 Swapping to the RM1200x Shift
06:31 This is just an introduction

Main features

  • Innovative Easy-Access Connection Position: Modular connections on the side of the PSU mean easier access for your cables and simpler, cleaner cable management.​
  • Fully Modular Micro-Fit PSU Connectors: CORSAIR Type 5 Gen 1 micro-fit PSU cables mean you only connect the cables your system needs while taking up less space.​
  • 140mm Fluid Dynamic Bearing Fan: Utilizes a specially calculated fan curve for high performance, low noise, and superior reliability.​
  • Intel ATX 3.0 Certified: Compliant with the ATX 3.0 power standard, supporting the PCIe Gen 5 platform and resisting transient power spikes.​
  • 100% 105°C-Rated Japanese Electrolytic Capacitors: Premium internal components deliver unwavering power delivery and long-term reliability.​
  • Modern Standby Compatible: Extremely fast wake-from-sleep times and better low-load efficiency.​
  • 80 PLUS Gold Certified: Steady power output at up to 90% efficiency, and Cybenetics-certified for lower power consumption, less noise, and cooler temperatures.​
  • Zero RPM Fan Mode Support: At low and medium loads the cooling fan switches off entirely for near-silent operation.​
  • Resonant LLC Topology with DC-to-DC Conversion: Provides clean, consistent power and enables use of more energy-efficient sleep states.​
  • Ten-Year Warranty: Your guarantee of reliable operation that will last across several system builds.​

We built a test system to give the Corsair RM1200x Shift a trial run using the following parts:

Processor: Intel Core i5-13600K
CPU Cooler: Corsair H150i Elite
Motherboard: MSI MPG Z790 Carbon WiFi
Memory: 32GB Kingston Fury Renegade DDR5-6000
SSD: Sabrent Rocket 4.0 M.2 NVMe
Graphics card: Gigabyte RTX 4080 16GB Gaming OC
Power supply: Corsair RM1200x Shift Gold
Case: Core 5000D Airflow
OS: Windows 11

Our initial conclusions are that you have to mount the PSU with the fan facing downwards and that you require a reasonable amount of space behind the right hand panel of your case. Neither of these points should pose a problem with enthusiast hardware but even so you should bear them in mind. While we very much like Corsair RMx Shift it is true to say it does not bring any earth-shaking changes to your PC build. Having said that, we are confident Corsair will produce new cases that take full advantage of this new family of power supplies, possibly with a new set of braided cables to match.

You can buy the Corsair RM1200x Shift for £259.99 from Overclockers UK HERE

Discuss on our Facebook page HERE.

KitGuru says: Corsair RMx Shift is likely to appeal to a niche market of enthusiasts however you can count us impressed.

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