Corsair AX Series, AX850, 850 Watt, 80+ Titanium Certified, Fully Modular Power Supply

Name: Corsair AX Series, AX850, 850 Watt, 80+ Titanium Certified, Fully Modular Power Supply
Brand: Unbranded
SKU: B07MRF491W

Status: Corsair AX Series: Unavailable on Amazon as of 2026-10-07 04:32 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 AX Series: 80+ Titanium efficiency, the top tier above Platinum; main trade-off: 850W caps headroom for dual-GPU or heavily overclocked HEDT rigs.

Unavailable on Amazon as of 2026-10-07 04:32 UTC

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

Similar: Redragon RGMS-850W PRO 80+ Gold 850 Watt Power… — $65.99 on Amazon as of 2026-10-07 04:20 UTC (price may vary).

View Current Price — $65.99

Similar: ASUS TUF Gaming 850W Gold — $149.99 on Amazon as of 2026-10-07 04:20 UTC (price may vary).

View Current Price — $149.99

Similar: darkFlash PMT Fully Modular Power Supply ATX… — $89.99 on Amazon as of 2026-10-06 22:21 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+ Titanium efficiency, the top tier above Platinum
✓ Zero RPM mode keeps the 135mm fan off at low-to-medium loads
✓ All-Japanese 105C capacitors for tight voltage regulation
✓ Fully modular flat cables simplify routing in tight cases

Cons

✗ 850W caps headroom for dual-GPU or heavily overclocked HEDT rigs
✗ Titanium efficiency gains over Gold are marginal on low-draw builds
✗ FDB fan still spins up audibly under sustained demanding loads
✗ Magnetic side labels offer three colors only, no RGB or custom art

Manufacturer description

Corsair ax series fully modular power supplies deliver 80 Plus Titanium efficient power and ultra-low-noise operation to complete your most ambitious builds. The highest quality internal components and all-Japanese 105 Degree rated capacitors provide the tightest voltage regulation and lowest ripple noise, delivering only the highest quality power to your PC. A 135mm fluid-dynamic bearing fan with Zero RPM mode only turns on when needed, ensuring virtually silent operation at low and medium loads. Fully modular flattened cables make building or upgrading your PC easy as you only need to…

SpecPicks Verdict

SpecPicks scored Corsair AX Series 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+ Titanium Certified for the highest level of efficiency and performance
Zero RPM fan mode for near-silent operation at low to medium loads
World Class electrical performance for incredibly stable voltages and ultra-low ripple noise
135mm cooling fan with true FDB Bearing delivers Low-Noise operation even at demanding loads
Three-color customizable magnetic side labels let you choose your PSU's style to match your build

Full Specifications

Brand	Corsair
Wattage	850 watts
Fan Size	13.5 centimeters
Model Name	ax series
Unit Count	1 Count
Form Factor	ATX
Model Number	CP-9020151-NA
Connector Type	ATX
Cooling Method	Air
Item Type Name	Computer Power Supply
Number of Fans	1
Output Wattage	850
Item Dimensions	1 x 1 x 1 inches
Mfr Part Number	CP-9020151-NA
Compatible Devices	Personal Computer
Power Supply Design	Full Modular
Warranty Description	10 years warranty
Maximum Input Voltage	12 volts_of_direct_current
Minimum Input Voltage	0.1 volts_of_direct_current
Item dimensions L x W x H	1 x 1 x 1 inches

Ready to buy?

Amazon shows no buyable offer for Corsair AX Series at the last check. A similar in-stock product is Redragon RGMS-850W PRO 80+ Gold 850 Watt Power…. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

View Similar — $65.99