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CORSAIR RM1000x Shift (2023) ATX 3.1 PCIe 5.1 Power Supply – Black

  • Based on 550 reviews
Condition: Used - Very Good
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Availability: In Stock.
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Arrives Friday, Oct 23
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Size: 1000W


Features

  • 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.
  • Intel ATX 3.1 Certified: Compliant with the ATX 3.1 power standard, supporting the PCIe Gen 5 platform and resisting transient power spikes.
  • Zero RPM Fan Mode Support: At low and medium loads the cooling fan switches off entirely for near-silent operation.
  • 100% 105C-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.

Description

CORSAIR RMx SHIFT Series fully modular power supplies boast a revolutionary side cable interface to keep all your connections within quick reach, for exceptionally convenient 80 PLUS Gold efficient power. With fully modular micro-fit connections and ATX 3.0 compliance, RMx SHIFT makes clean PC builds and upgrades even easier. RMx SHIFT PSUs use Japanese 105°C-rated electrolytic capacitors, for long life and reliability backed by a ten-year warranty. A 140mm fluid dynamic bearing fan utilizes a specially calculated fan curve for high performance and reliability with low noise, while Zero RPM mode support ensures virtually silent operation at low and medium loads. For quiet, efficient, and accessible power, put an RMx SHIFT Series PSU on your side.

Model Name: RM1000x SHIFT


Brand: Corsair


Compatible Devices: Personal Computer


Connector Type: ATX, EPS


Output Wattage: 1000


Form Factor: ATX


Wattage: 1000 watts


Cooling Method: Air


Item dimensions L x W x H: 7.09 x 5.91 x 5.08 inches


Item Weight: 4.2 pounds


Compatible Devices: Personal Computer


Connector Type Used on Cable: ATX, EPS


Output Wattage: 1000


Form Factor: ATX


Wattage: 1000 watts


Cooling Method: Air


Power Supply Design: Full Modular


Connector Quantity: 30


Number of Fans: 1


Maximum Input Voltage: 240 volts_of_alternating_current


Minimum Input Voltage: 100 volts


Upper Temperature Rating: 105 °C


System Bus Connector Type: 24 Pin, 4+4 Pin


Item Dimensions: 7.09 x 5.91 x 5.08 inches


Item Weight: 4.2 pounds


Model Name: RM1000x SHIFT


Brand: Corsair


Number of Items: 1


Unit Count: 1 Count


Manufacturer: Corsair


UPC: 840006653943


Built-In Media: Item


Item Type Name: Power Supplies


Model Number: CP-9020253-NA


Mfr Part Number: CP-9020253-NA


Warranty Description: 10 year manufacturer


Item Highlight: Fully Modular, Low-Noise, Side Connectors, Zero RPM Mode, 80 PLUS Gold, NA


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Oct 23

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Glad I chose this one
Size: 1000W
Runs my RTX 5080 and my i9 14900k seamlessless with lights and other accessories perfectly. This thing is a monster. She fits perfectly, actually better than I had expected when doing a measurement check before I ordered. It is quiet and I had to actually shine my light on it to be sure it was actually running ideally. Connections were perfect and sturdy. ... show more
Reviewed in the United States on August 30, 2025 by Alec

  • Great PSU, flexible wires and easy cable routing
Size: 1000W
This PSU is not too long compared to other 1000W units but it also has plugs on the side which makes it quite short so it should be compatible with a lot of cases even if the max supported PSU length is short. The cables it comes with are quite flexible which makes it easy to route around the case. And the cables don't have inline capacitors so it's easy to bend around near the plug. The PSU fan also barely ever turns on. The zero RPM fan mode is really great and is the best implementation across all of the other manufacturers I've seen. ... show more
Reviewed in the United States on April 21, 2023 by Brandon

  • Money well spent
Size: 1000W
I have used this for years no regrets at all solid purchase.
Reviewed in the United States on September 12, 2026 by Chad E Dewey

  • Lots of stable power
Size: 1000W
Recently built a new PC and used all Corsair parts. They've been reliable in the 8 months since being installed and I've been extremely pleased with their performance. I feel comfortable using this PSU and it can handle future upgrades/devices I might add.
Reviewed in the United States on August 18, 2026 by Carlos F.

  • Super
Size: 1000W
Muy buen artículo la fuente era lo q nesecitaba
Reviewed in the United States on September 2, 2026 by Yos

  • Does NOT fit a Fractal Design Torrent case
Size: 1000W
I have a Fractal Design Torrent mid-tower case where the PSU goes on top, but the frame of the case is too close to the side of the RM1000x Shift PSU where the cables plug in, so you can't fit any cables in there as the gap is too small. It seems this area was made for PSUs with the normal rear connections as there is ample space behind the PSU. So double check how much clearance you have where the cables plug into the PSU. I'm sure it's a great PSU, I've had Corsair PSUs for 15 years and never had a problem. I ended up going with a Corsair HX850 (cables on the rear, not the side like the Shift series), it has more than enough power (850w is more than enough unless you have an insane rig) and is also platinum rated whereas RMX series is gold rated. Model number I got is CP-9020138-NA. ... show more
Reviewed in the United States on March 2, 2023 by Northwest

  • I mean, it works
Size: 1000W
I'd expect good quality for a $200 power supply, and I haven't felt I wasted my money. The modular design is good, it was easy to install, and the damn thing is so quiet I can't hear it. Runs a 7900 XTX just fine. Looks decent too, though that's not really critical for a PSU. If I had one tiny complaint, it's that I wish they had given one or two more of the standalone 8-pin connectors rather than the 8 pin + 8 pin connectors, makes it a little annoying to hook up a 7900 and looks worse when it's done, but ultimately it still works fine. ... show more
Reviewed in the United States on May 12, 2023 by Adam Schlesener

  • Excelente servicio
Size: 1000W
Es grande, Llego 5 días antes de lo esperado, excelente servicio
Reviewed in the United States on August 4, 2026 by Diego Alexander Jimenez Franco

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