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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  • Chugworth - Saturday, September 14, 2013 - link

    Unless you've got some ridiculous setup that needs over 500 watts of power, just go with a fanless power supply. NewEgg has several of them.
  • Daniel Egger - Saturday, September 14, 2013 - link

    I'll let Anandtech know the second I find someone who can even consume all that power and needs a 500+W PSU. Completely ridiculous! Even a latest and greatest latest dual GPU gamer setup is totally on the safe side with a 450W PSU. On the contrary it's almost impossible to source decent 200W PSUs which should be perfectly okay for most systems on this planet.
  • garadante - Saturday, September 14, 2013 - link

    Actually, 450 watts is nowhere near enough for all but the most power efficient systems. Power supplies are most efficient at half loading, and you can nearly saturate a 450 watt supply with a single high end 7000 series card and mid-range everything else. So unless your dual GPUs are pitifully small, what you've said is a severe understatement. And as for 200 watts being enough for most people, most desktops consume 50-80~ watts idle, if not more. Put even a middling load on a basic system and you'll surpass 200 watts which would cause serious issues on the PSU.

    But for the simple fact alone that PSUs are most efficient at 50% loading, should merit the wisest course of action to be buying a PSU with enough capacity to hit 50% load on it's most common loading that isn't irrelevantly small, like idle. That would put the ideal PSU for most systems somewhere in the 550-750 watt range. It also increases PSU lifespan not to be having it near 100% loading.
  • madmilk - Saturday, September 14, 2013 - link

    No, that would not be okay for most dual-GPU setups. A high-end graphics card alone uses 200-250W, before overclocking. CPUs use between 84W for a stock i7-4770 to over 250W with an overclocked i7-3930K or FX-8350. Add in a couple hard drives, SSDs, optical drives, fans and the motherboard and you're easily looking at over 800W of power at load.
  • jasonelmore - Saturday, September 14, 2013 - link

    Looking at my UPS's lcd screen, i measured my system power load at 480 watts full load.

    4770K CPU OC'd to 4.2 Ghz
    Asus GTX 780
    Maximus VI Motherboard
    Swiftech Apogee Drive II Watercooling
    2 SSD's in Raid
    2 HDD's in Raid

    granted the ssd's and hdd's werent even close to full load, i'd say 500 watts is a safe number. Adding another GTX 780 for a SLI Setup would almost certainly raise that up to 650w......
  • chaos215bar2 - Saturday, September 14, 2013 - link

    I doubt you were really pushing even the CPU or GPU as far as possible. Remember, the amount of power these components use doesn't just depend on the proportion of time each core is doing something. It depends very much on the workload itself.

    Sure, a 500 watt PSU will probably be enough most of the time, albeit sometimes running near 100% capacity (not a great idea, in general). However, what happens when you hit that random workload with just the right combination of instructions to push everything beyond you're measured 480 watts. Do you really thing it's worth occasionally driving your PSU beyond 100% capacity just to save a few dollars? Just get a PSU with a little headroom.
  • chaos215bar2 - Saturday, September 14, 2013 - link

  • numberoneoppa - Saturday, September 14, 2013 - link

    What a ridiculous statement. There are plenty of people (myself included) who easily push 500W. Besides that, do you not understand the efficiency numbers? Buying a PSU with more overhead will allow you to actually use less electricity, which is important for many of us who leave our computers on 24/7.
  • lmcd - Saturday, September 14, 2013 - link

    Oh well it's his house fire.
  • bobbozzo - Saturday, September 14, 2013 - link

    Bigger power supplies are LESS efficient at low loads.

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