Corsair RM750x ATX v3.1 PSU Review

Epilogue

The Corsair RM750x meets the ATX v3.1 requirements for transient response loads and achieves high overall performance. I would like to see it have lower voltage drops at 12V under transient loads, but it is still far from the respective limits. The ability to adjust the minimum fan speed through a knob located at the PSU’s front side is an interesting feature, providing more control to interested users. This feature offers increased compatibility to the PSU with the chassis that users will choose to pair it with. Another nice feature is the fan failure protection that Corsair implemented in this platform. The fan’s proper operation is crucial and can significantly affect the power supply’s operation. Therefore, it is time to see more brands implementing this protection. I added an extra 0.25 points bonus for every PSU with fan failure protection to push them to do so.

Unfortunately, the MSRP prices of the new Corsair RMx units are higher than the street prices of competing offerings, but hopefully, once the PSUs hit the market, their street prices will be notably lower. All of us want as low prices as possible, but the truth is that brands that employ many engineers to build unique platforms for them also have to pay them. It is not as easy as getting a ready platform from the factory, putting your label on it, and getting over with it. A note: the platforms that the new RMx units use have been designed and developed by Corsair’s and CWT’s engineers and are exclusive to Corsair only, meaning no other brand can use them.

 

Before investing in a new power supply, read my Best ATX v3.x PSUs article to check all alternative PSU offerings. You help me a lot by using my affiliate links, which don’t increase the product’s price. I get a commission from Amazon every time you do it, which can make a difference for me, especially now that I am on my own, working exclusively for my media and not for someone else.

 

Pros:
  • Top overall performance
  • Delivered full power at 47°C
  • ATX v3.1 and PCIe 5.1 ready
  • Cybenetics Gold efficiency
  • Silent operation (Cybenetics A+)
  • Highly efficient 5VSB rail
  • Fan failure protection
  • Conservatively set 12V OCP and OPP (normal temperatures)
  • Tight load regulation
  • Good ripple suppression
  • Long hold-up time
  • Dead low inrush currents
  • Low vampire power
  • Alternative Low Power Mode (ALPM) compatible
  • Decent APFC converter’s performance
  • Quality FDB fan
  • Fan speed adjustment knob
  • 12+2 pin PCIe connector (600W)
  • Fully modular
Cons:
  • Increased MSRP
  • 12V rail’s transient response can be improved
  • Hot OCP and OPP triggering points need to be notably lower than the cold ones
  • 3.3V rail drops below 3.2V in the transient response tests
  • Reduced distance between the peripheral connectors

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9 thoughts on “Corsair RM750x ATX v3.1 PSU Review

  1. Hi, on page 8 “protections” it says 1046w for the OPP, but how is that 123% of 750w ? It would be 123% for a 850W unit, but for a 750W unit 1046W is 139.5%. If the OPP is set at 123%, then shouldn’t that be 922.5W ?

  2. Thank you for the detailed review and your time spent for testing the units.
    I just bought this unit on Amazon during BlackFriday deal because of good result in your test.

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