Corsair sell a lot of components for PCs: memory, cases, SSDs, cooling, peripherals and power supplies to name their current lineup.  For that last element, Corsair have released a new range of 'ultra-quiet' fully modular power supplies, dubbed the RM series.  These PSUs replace the TX Series line while offering 80 PLUS Gold across the range, meaning a minimum energy efficiency at 87% for 20% load and 90% for 50% load (88%/92% respectively for 230V AC).

The RM series will have several models available from 450W up to 1000W.  Each power supply offers a low noise Corsair NR135L fan plus a Zero RPM Fan mode (for low usage operation under 40% load), as well as low profile modular cables.  Select models (such as the RM1000) come with a Corsair Digital Bridge cable and Corsair Link compatibility for real-time monitoring of fan speeds and power delivery.  Each PSU comes with a five year warranty included and is Haswell compatible.

  RM450 RM550 RM650 RM750 RM850 RM1000
Power 450W 550W 650W 750W 850W 1000W
Warranty 5 Years 5 Years 5 Years 5 Years 5 Years 5 Years
Length 16 cm 16 cm 16 cm 18 cm 18 cm 18 cm
24-pin ATX
1 1 1 1 1 1
8-pin CPU
1 1 1 1 2 2
6+2-pin PCIe
2 2 4 4 6 8
4-pin Molex
4 4 7 7 8 11
6 6 8 8 10 12
1 1 2 2 2 2
Price (US) $100 $110 $120 $130 $150 $200

The RM Series are available on Corsair's website direct or select e-tailers.

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  • MelvisLives - Sunday, September 15, 2013 - link

    any idea on the size of these? they look a fair bit longer than the old tx power supplies
  • MelvisLives - Sunday, September 15, 2013 - link

    never mind, seen it in the article now, i was just blind, they are really long though, 160mm for the low end and 180mm for the high power ones
  • JDG1980 - Sunday, September 15, 2013 - link

    Sounds like these could potentially be a nice choice, but I'd like to know who the OEM is first.
  • RdVi - Sunday, September 15, 2013 - link

    Nice, I'm glad to see some cheaper PSU's with such features. I'm very happy with my fully modular Seasonic XP660 plus. In hybrid mode it hasn't turned on the fan once for my moderately overclocked system. If these are similar at the prices stated, then they'll be great purchases. I'm particularly glad that they're offering the lower wattage models, however, at the same physical size and such a small difference in price, even those who only need 450w are probably better going for the 650w in the hope that the fan might remain off in hybrid mode.
  • everex11 - Monday, September 16, 2013 - link

    my Aunty Brianna got an almost new red Jeep Cherokee SUV from only working part time on a computer... go to this
  • Hrel - Monday, September 16, 2013 - link

    Wow, guess Seasonic finally has a competitor in the PSU space. I look forward the full review. Would love to see a dual/vs review including Seasonic's new "SS" series that replaces the "X" series of PSU's. These are the only 2 PSU's I know of with a "full silent" mode. But I'd be interested in a competitive comparison between every PSU that has this feature. Given the reasonable pricing I see no reason to ever buy a PSU that isn't fully silent ever again. THANK MOORE!
  • owan - Monday, September 16, 2013 - link

    Corsair doesn't truly compete with Seasonic.. in fact, Corsair re-brands Seasonic PSU's for some of their product lines, though they also use designs from CWT and Flextronics
  • just4U - Wednesday, September 18, 2013 - link


    Trying to find out which company actually makes these..
  • just4U - Tuesday, September 17, 2013 - link

    Quick Question here.. are these power supplies being made by Seasonic???
  • Rocket321 - Tuesday, September 17, 2013 - link

    Zero RPM (silent) fan mode is awesome, I hope this becomes a checkbox item for every PSU in the next year.

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