Corsair CP-9020178-UK RM650x 80 Plus Gold 650 W Fully Modular ATX Power Supply - Black

Name: Corsair CP-9020178-UK RM650x 80 Plus Gold 650 W Fully Modular ATX Power Supply - Black
Brand: Unbranded
SKU: B07DLQSRPN

Status: Corsair CP-9020178-UK RM650x 80 Plus Gold 650 W…: Unavailable on Amazon as of 2026-10-07 04:26 UTC. SpecPicks has no in-stock listing with matching specs on file; the search below lists current offers. eBay sellers may still list this model new or used.

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Bottom line: The Corsair CP-9020178-UK RM650x 80 Plus Gold 650 W Fully Modular ATX: 80 PLUS Gold certified for lower power draw and cooler temps; main trade-off: 650W ceiling limits high-end RTX 4090/5090 GPU builds.

Unavailable on Amazon as of 2026-10-07 04:26 UTC

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Currently unavailable on Amazon. Not the same product — 3 in-stock alternatives:

Similar: PCCOOLER KN650 650W ATX 3.1 Fully Modular Power… — $75.99 on Amazon as of 2026-10-06 22:21 UTC (price may vary).

View Current Price — $75.99

Similar: MSI MAG A650GL — $94.00 on Amazon as of 2026-10-06 12:20 UTC (price may vary).

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Similar: Apevia ATX-SL650W Soul 650W Fully Modular — $49.99 on Amazon as of 2026-10-06 12:20 UTC (price may vary).

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Original listing (currently unavailable) → Compare to similar power supplies

By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-07

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides. About the author →

Pros & Cons

Pros

✓ 80 PLUS Gold certified for lower power draw and cooler temps
✓ Zero RPM fan mode runs near-silent at low and medium loads
✓ 100% all-Japanese 105°C capacitors for long-term reliability
✓ Backed by a 10-year Corsair warranty

Cons

✗ 650W ceiling limits high-end RTX 4090/5090 GPU builds
✗ No native 12VHPWR/ATX 3.0 cable for newest GPUs
✗ Fixed fan curve with no software fan control
✗ Headroom too tight for dual-GPU or heavy OC rigs

Manufacturer description

Product DescriptionCORSAIR RM650x series power supplies are built with the highest quality components to deliver 80 PLUS Gold efficient power to your PC. Using only Japanese 105°C capacitors, users can depend on an RM650x PSUs’ long life and reliability, backed by a ten-year warranty. Zero RPM Mode means an RM650x series PSU is virtually silent at low and medium loads, and even at maximum power, a low noise fan ensures quiet operation. Fully modular cables make PC builds and upgrades easy, as you only need to install the cables your system requires. Quiet, efficient and dependable, an RM650x…

SpecPicks Verdict

SpecPicks scored Corsair CP-9020178-UK RM650x 80 Plus Gold 650 W Fully Modular ATX… using a rating × review-volume × price-fit model applied to published specs and reviews across the power supplies category. Compare with similarly-priced alternatives in the power supplies category before committing. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for power supplies of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

80 PLUS Gold Certified: High efficiency operation for lower power consumption, less noise and cooler temperatures.
Tuned for Low Noise Operation: A specially set fan curve ensures that, even at full load, fan noise is kept to a minimum.
Zero RPM Fan Mode: At low and medium loads the cooling fan switches off entirely for near-silent operation.
100% All Japanese 105°C Capacitors: Premium internal components ensure unwavering power delivery and long-term reliability.
Fully Modular Cables: Only connect the cables your system needs, making clean and tidy builds easier.

Full Specifications

Brand	Corsair
Color	Black
Wattage	650 watts
Fan Size	13.5 centimeters
Model Name	ATX Power Supply
Form Factor	ATX
Model Number	CP-9020178-UK
Connector Type	ATX
Cooling Method	Air
Item Type Name	Corsair RM650x 80 PLUS Gold, 650 Watts, Fully Modular ATX Power Supply
Number of Fans	1
Output Wattage	650
Item Dimensions	6.3 x 5.91 x 3.39 inches
Mfr Part Number	CP-9020178-UK
Zero RPM Fan Mode	At low and medium loads the cooling fan switches off entirely for near-silent operation.
Compatible Devices	pc
Power Supply Design	Full Modular
Fully Modular Cables	Only connect the cables your system needs, making clean and tidy builds easier.
Maximum Input Voltage	240 volts
Minimum Input Voltage	5 volts

Ready to buy?

Amazon shows no buyable offer for Corsair CP-9020178-UK RM650x 80 Plus Gold 650 W… at the last check. A similar in-stock product is PCCOOLER KN650 650W ATX 3.1 Fully Modular Power…. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

View Similar — $75.99