Introducing the New RMx Series of Power Supplies

 

This month, Corsair introduced the new RMx power supply series. The RMx ostensibly replaces the RM in Corsair's power supply line up. The RMx features the same 135mm rifle bearing fan as the RM, with a "Zero RPM" mode that keeps the fan from spinning, therefore completely silent, at loads under 40%. The RMx is 80 Plus Gold and is fully modular, but other than this the RMx has quite a few upgrades over the RM.

The RMx features all Japanese capacitors, rated at 105°C. This upgrade allows the PSU to run at full load, continuously, in environments as high as 50°C. For this reason, we've increased the warranty for the RMx from five years to seven years. The RMx product line has also been expanded to not only include 650, 750, 850 and 1000W varieties; but also a new lower wattage 550W unit.

Due to the limited functionality of the Link software with the original RM Series and the neccessity of a bulky dongle, the Link functionality has been removed from the RMx. If the user wants the ability to monitor their PSU as well as control the fan and how many +12V rails their PSU has, these features are available in the RMi power supply series.

The cable set for the RMx is much like the RMi's. They utilize the new “Type 4” cables.  The 6-pin cables (for SATA and peripheral power) are identical to the Type 3 cables used previously (HXi, RM, etc.).  But the 8-pin cables (for ATX12V/EPS12V and PCIe) have added capacitors to help reduce the ripple noise on these leads.  Furthermore, the Type 4 24-pin has an additional four pins, as well as the added capacitors.  These extra leads are sense wires that allow the RMx to sense the voltage at the load and adjust accordingly to improve voltage regulation.

Today’s high-performance CPUs and graphics cards all require power to be supplied over the +12V rail, which means that any PSU worth considering needs to be able to deliver the majority of its power on the +12V rail.  The RMx Series PSUs can deliver all of its available power via the +12V rail, which make them ideal for high-end gaming PCs with single and multiple GPUs.
The following table shows the DC output capabilities of each model:

 

RM550x

RM650x

RM750x

RM850x

RM1000x

+3.3V

25A

130W

25A

130W

25A

150W

25A

150W

25A

150W

+5V

25A

25A

25A

25A

25A

+12V

45.8A

549.6W

54A

648W

62.5A

750W

70.8A

850W

83.3A

1000W

-12V

0.8A

9.6W

0.8A

9.6W

0.8A

9.6W

0.8A

9.6W

0.8A

9.6W

+5VSB

3A

15W

3A

15W

3A

15W

3A

15W

3A

15W

Total

-

550W

-

650W

-

750W

-

850W

-

1000W

All of the power supplies in the Corsair RMx Series have the necessary protection functions to ensure trouble-free operation, even in extreme conditions. Below is a list of the included protections:

    • Over Current Protection (OCP):  Shuts off power if any rail is overloaded beyond a safe level. 
    • Over Voltage Protection (OVP): Shuts off power if voltages exceed specification.
    • Under Voltage Protection (UVP): Shuts off power if voltages drop below specification.
    • Short Circuit Protection (SCP):  Shuts off power if a short circuit is detected.
    • Over Temperature Protection (OTP):  Shuts off power if temperatures exceed a specified value.
    • Over Power Protection (OPP):  Shuts off power if the total output power exceeds a safe level.

    The RMx series power supplies are currently available in the U.S. exclusively at Newegg.com. Outside of the U.S., the RMx is available at your favorite computer component retailers.

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      3/21/2016 5:08 AM

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      12/25/2015 5:53 AM

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