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CORSAIR - RMX Series RM1000x Cybenetics Gold Fully Modular ATX Power Supply - Black

Model: CP-9020271-NA
SKU: 6587607
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Specifications
  • Wattage
    1000 watts
    Modular
    Fully modular
    Energy Efficiency
    Cybenetics Gold
    ATX Connector
    ATX CABLE 24-PIN (24). 2x EPS/ATX12V CABLE 8-PIN (4+4)
    PCIe Connector
    4x PCIe 8-PIN (6+2). 1x PCIe CABLE 12+4-PIN(12+4)
    Peripheral Connector
    6
  • Key Specs
    • Wattage: 1000 watts (Measurement of electrical power.)
    • Modular: Fully modular
    • Energy Efficiency: Cybenetics Gold (Computer and server power supplies with the 80 PLUS certification are tested for operating efficiency at 10, 20, 50, and 100% of rated load. If a product tests at least 80% efficient, it qualifies for the base level 80 PLUS certification. Bronze, Silver, Gold, Platinum, and Titanium level certifications are given to products with even higher efficiency ratings.)
    • ATX Connector: ATX CABLE 24-PIN (24). 2x EPS/ATX12V CABLE 8-PIN (4+4) (The configuration of the connector as it connects a computer power supply unit to an ATX motherboard.)
    • PCIe Connector: 4x PCIe 8-PIN (6+2). 1x PCIe CABLE 12+4-PIN(12+4) (The configuration of the connector as it connects a computer power supply unit to a PCIe (Peripheral Component Interconnect Express) motherboard interface.)
    • Peripheral Connector: 6 (The configuration of the connector as it connects a computer power supply unit to a peripheral component such as a motherboard, video card, lighting, etc.)
    • SATA Connector: 12x SATA Connectors (The configuration of the connector as it connects a computer power supply unit to a SATA-based drive.)
    • EPS12V Connector: 2 (The configuration of the connector as it connects a computer power supply unit to a EPS12V motherboard interface.)
    • PCI Express Version: PCI Express 5.0
    • Form Factor: ATX (The size, arrangement, and physical configuration of the product.)
    • Product Length: 160 millimeters (The out of box length of the item. Length is measured as the longest dimension of the item.)
  • General
    • Brand: CORSAIR
    • Model Number: CP-9020271-NA
    • Product Name: RMX Series RM1000x Cybenetics Gold Fully Modular ATX Power Supply
    • Color: Black
  • Power
    • Wattage: 1000 watts (Measurement of electrical power.)
    • Modular: Fully modular
    • Energy Efficiency: Cybenetics Gold (Computer and server power supplies with the 80 PLUS certification are tested for operating efficiency at 10, 20, 50, and 100% of rated load. If a product tests at least 80% efficient, it qualifies for the base level 80 PLUS certification. Bronze, Silver, Gold, Platinum, and Titanium level certifications are given to products with even higher efficiency ratings.)
    • Power Cord Included: true (Connects your product to an electrical outlet, allowing for immediate use (provided that other installation requirements are met).)
    • Cord Length: 5 feet
  • Connectivity
    • ATX Connector: ATX CABLE 24-PIN (24). 2x EPS/ATX12V CABLE 8-PIN (4+4) (The configuration of the connector as it connects a computer power supply unit to an ATX motherboard.)
    • Floppy Connector: FALSE (The configuration of the connector as it connects a computer power supply unit to a floppy disk drive.)
    • PCIe Connector: 4x PCIe 8-PIN (6+2). 1x PCIe CABLE 12+4-PIN(12+4) (The configuration of the connector as it connects a computer power supply unit to a PCIe (Peripheral Component Interconnect Express) motherboard interface.)
    • Peripheral Connector: 6 (The configuration of the connector as it connects a computer power supply unit to a peripheral component such as a motherboard, video card, lighting, etc.)
    • SATA Connector: 12x SATA Connectors (The configuration of the connector as it connects a computer power supply unit to a SATA-based drive.)
    • EPS12V Connector: 2 (The configuration of the connector as it connects a computer power supply unit to a EPS12V motherboard interface.)
    • PCI Express Version: PCI Express 5.0
    • Form Factor: ATX (The size, arrangement, and physical configuration of the product.)
  • Dimensions
    • Product Height: 214 millimeters (The out of box height of the item. Height is measured as the vertical distance from the bottom of the item to the top as it would be primarily used or placed.)
    • Product Width: 86 millimeters (The out of box width of the item. Width is measured as the horizontal distance from one side of the item to the other as it would be primarily used or placed.)
    • Product Length: 160 millimeters (The out of box length of the item. Length is measured as the longest dimension of the item.)
    • Product Weight: 110.08 ounces (The out of box weight of the item.)
  • Cooling
    • Cooling System: Air (A computer's CPU generates heat while operating and requires a cooling system to keep internal components functioning properly. Air cooling uses fans to draw in cool air and exhaust hot air, while liquid cooling uses coolant-filled tubes and water blocks to regulate internal temperature more efficiently.)
    • Cooling Fan Type: 140mm Fluid Dynamic Bearing Fan
    • Number of Fans Included: 1
  • Features
    • Lighting Type: None
  • Warranty
    • Warranty - Parts: 10 years
    • Warranty - Labor: 10 years
  • Other
    • UPC: 840006667698

CORSAIR RMx Series Fully Modular Low-Noise Power Supplies deliver quiet, dependable power with Cybenetics Gold efficiency to your PC. Fully modular, ultra-flexible embossed cables make PC builds easy, as you connect only the cables your system requires. Compliant with the ATX 3.1 power standard from Intel, RMx PSUs have the connections needed to power today’s demanding PC hardware including a native 12V-2x6 connector. 100% Japanese 105°C-rated electrolytic capacitors deliver fantastic electrical performance, while a 140mm FDB fan provides low noise cooling. Backed by a ten-year warranty, RMx PSUs are the gold standard for many years to come.

  • Fully Modular: Reliable and efficient low-noise power supply with fully modular cabling, so you only have to connect the cables your system needs.
  • Cybenetics Gold-Certified: Rated for up to 91% efficiency, resulting in lower power consumption, less noise, and cooler temperatures.
  • ATX 3.1 Compliant: Compliant with the ATX 3.1 power standard from Intel, supporting PCIe 5.1 and resisting transient power spikes.
  • Native 12V-2x6 Connector: Ensures compatibility with the latest graphics cards with a direct GPU to PSU connection – no adapter necessary.
  • Embossed Cables with Low-Profile Combs: Sleek, ultra-flexible embossed cables look great and make installing and connecting the RMx a breeze.
  • Low Noise with 140mm Fan: A 140mm FDB fan with a specially calculated fan curve ensures low-noise operation even at full load, with a fan speed adjustment knob on the back for quick manual control.
  • 100% Japanese Electrolytic Capacitors: Delivers steady, reliable power and dependable electrical performance with 105°C-rated Japanese capacitors.
  • 50°C Maximum Operating Temperature: For reliable power even under high-stress conditions.
  • Zero RPM Fan Mode: For near-silent operation at lower loads.
  • Ten-Year Warranty: Your guarantee of reliable operation for peace of mind through multiple builds.
Whats Included
  • RM1000x Power Supply
  • 1x ATX CABLE 24-PIN (24)
  • 2x EPS/ATX12V CABLE 8-PIN (4+4)
  • 4x PCIe CABLE 8-PIN (6+2)
  • 1x PCIe CABLE 12+4-PIN(12+4)
  • 3x SATA CABLE (4 SATA - (Straight angle))
  • 2x PATA CABLE (4-PIN)
  • Power Cord
  • Mounting screws
  • Cable ties

Q: Does the power supply come with a power cord?

A: This power supply does include a power cord.

Q: How many PCIe connectors does the power supply have?

A: This power supply has four 8-pin (6+2) PCIe connectors and one 12+4-pin PCIe connector.

Q: How long is the warranty on the power supply?

A: The power supply comes with a ten-year warranty.

Q: What are the dimensions of the power supply?

A: The dimensions of the power supply are 160 millimeters long, 214 millimeters high, and 86 millimeters wide.

Q: What is the wattage of the power supply?

A: The wattage of the power supply is 1000 watts.

Q: Is the power supply compatible with the ATX 3.1 power standard?

A: The RMx PSUs are compliant with the ATX 3.1 power standard from Intel.

Q: What type of cooling fan does the power supply use?

A: The power supply uses a 140mm fluid dynamic bearing fan for cooling.

Q: What all does this power supply come with all new cables or are they sold separately

A: Mine came with every cable I needed including the new 16 pin for newer 50 series graphics cards, eg. the 5080.

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Pros for CORSAIR - RMX Series RM1000x Cybenetics Gold Fully Modular ATX Power Supply - Black
Overall Performance, Noise Level, Installation Ease, Power Capacity, Fan ControlOverall Performance, Noise Level, Installation Ease, Cable Management, Power Supply CapacityNoise Level, Power EfficiencyOverall Performance, Noise Level, Installation Ease, Power Supply Performance, Size
Cons for CORSAIR - RMX Series RM1000x Cybenetics Gold Fully Modular ATX Power Supply - Black
Coil WhineThere were no cons for this productThere were no cons for this productThere were no cons for this product

Specs

Reviews

Customers are sayingCustomers love the RMX Series RM1000x power supply for its overall performance and ample power capacity. Many appreciate its quiet operation and the ability to fine-tune the noise level. Users also find the cable management to be clean and the installation process easy, with the modular design contributing to a tidy case. A small number of users reported no coil whine.
This summary was generated by AI based on customer reviews.
  • Overall Performance (144)
  • Power Capacity (88)
  • Noise Level (70)
  • Installation Ease (23)
  • Fan Control (22)
  • Coil Whine (3)

Customer Images

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.

  • Rated 5 out of 5 stars

    Quiet, powerful, and rock-solid reliability

    The Corsair RM1000x delivers flawless, stable power even under heavy GPU loads. It runs whisper-quiet, stays cool, and the fully modular design makes cable management effortless. Build quality feels premium, and efficiency is top-tier. Perfect for high-end gaming or workstation rigs this PSU gives long-term confidence and clean performance every time.

    Posted by CalebH

  • Rated 5 out of 5 stars

    100% would recommend

    All the power I need, with the being able to use only the connections I need makes for the cleanest PC builds. Corsair is #1 in my opinion. Also this is super quite with a fan control knob on the back.

    Posted by LordGhost

  • Rated 5 out of 5 stars

    Great Power Supply That Easily Handles Heavy Loads

    TL;DR: This Corsair power supply handles my RTX 5080 flawlessly with zero coil whine. It actually overdelivers on efficiency with a Cybenetics Platinum rating despite being listed as Gold online. The flexible sleeved cables and preinstalled combs make installation incredibly easy. Highly recommended for demanding builds. Full Review: I bought this Corsair power supply for a recent computer build and while it's a bit larger than some other options out there, you can feel the premium quality immediately. The packaging is surprisingly minimal and clean. That makes getting everything laid out and ready to install pretty painless. The cables really caught my attention when sorting through the box. They are fully modular and feature individual paracord sleeving made from a flexible triple layer mesh. Corsair even went ahead and preinstalled clamshell style cable combs on the 12V 2x6 and ATX 24 pin connectors. That seems to be a newer addition for this specific unit and it really helps keep things tidy inside the case. They also tossed in a small pack of black zip ties - a simple but helpful touch for routing wires. Interestingly enough, the product description online actually sells this unit short. It's advertised as a Gold efficiency power supply but this refreshed version is essentially Cybenetics Platinum rated. Both the physical box (see photo) and the Cybenetics website confirm the upgrade. For those keeping track of the specs, the certification ID is 2396 with an average efficiency of 89.047% at 115V and 91.139% at 230V. It's incredibly rare to see a brand deliver above their target specs instead of barely meeting them. That extra efficiency will definitely help keep energy costs down if you live in an area with expensive electricity rates. I'm using this to power an RTX 5080 and it handles that massive card without breaking a sweat. I haven't noticed a single bit of coil whine regardless of the load. There is a handy fan control knob on the back that comes set to a zero RPM mode by default. This means the fan stays completely off and dead silent until you push past the 500 watt mark. If you're someone who prefers constant airflow over silence, you can simply turn that knob clockwise until it clicks to manually set your own fan speed. Honestly though, even when the 140mm fluid dynamic bearing fan finally kicks on during heavy gaming sessions, it runs exceptionally quiet. Getting the graphics card hooked up was super easy because the 12V 2x6 connector latches into place very solidly. I did notice that the cable only features two of the four sense pins. Don't let that worry you if you spot it too. It powers my card perfectly fine without those extra two pins which are mostly just there for future components or sideband revisions anyway. The two pins that actually matter for dictating power are present and accounted for in this kit. Because the sleeved cables are so flexible, routing them was a breeze and allowed the connector to seat squarely in the socket without being pulled at a weird angle. If you're putting together a heavy duty system and need reliable power with plenty of high quality cables, this unit is well worth picking up. Product: CORSAIR - RMX Series RM1000x Cybenetics Gold Fully Modular ATX Power Supply - Black Model Number: CP-9020271-NA

    Posted by SamFisher

  • Rated 5 out of 5 stars

    Great power supply

    Great for my pc build needed something that could handle my rtx 5089 and this psu did it perfectly also very easy to install and comes with different cords to suit different computers overall great psu would buy again for future builds

    Posted by JohnathanF

  • Rated 5 out of 5 stars

    Rm1000x

    The Corsair RM1000x is a top-tier power supply, offering a blend of performance, efficiency, and quiet operation. It's an ideal choice for high-end gaming or workstation builds that require reliable power delivery. With its fully modular design, solid efficiency rating, and extensive protection features, the RM1000x offers excellent value for those who need a powerful and long-lasting PSU.

    Posted by AndrewC

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