Corsair Professional Series AX 1200 Watt ATX/EPS Modular 80 PLUS Gold (AX1200)

Name: Corsair Professional Series AX 1200 Watt ATX/EPS Modular 80 PLUS Gold (AX1200)
Brand: Unbranded
SKU: B003PJ6QVU

Status: Corsair Professional Series AX 1200 Watt ATX/EPS…: Unavailable on Amazon as of 2026-10-03 16:20 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 Professional Series AX 1200 Watt ATX/EPS Modular 80 PLUS Gold: 80 PLUS Gold certified, up to 90% efficiency at real-world load; main trade-off: 1200W is overkill for single-GPU rigs and wastes efficiency at low load.

Unavailable on Amazon as of 2026-10-03 16:20 UTC

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Currently unavailable on Amazon. Not the same product — an in-stock alternative:

Similar: ASUS TUF Gaming 1200W Gold — $226.99 on Amazon as of 2026-10-07 04:20 UTC (price may vary).

View Current Price — $226.99

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

By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-03

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, up to 90% efficiency at real-world load
✓ Seven-year warranty plus lifetime Corsair technical support
✓ Japanese capacitors throughout for long-term voltage stability
✓ 1200W headroom handles multi-GPU SLI and CrossFire builds
✓ Temperature-controlled double ball-bearing fan stays quiet at idle

Cons

✗ 1200W is overkill for single-GPU rigs and wastes efficiency at low load
✗ Older ATX/EPS design predates ATX 3.x and 12VHPWR connectors
✗ Double ball-bearing fans hum more than modern fluid-dynamic bearings

Manufacturer description

The Corsair AX1200 provides the power level, reliability and stability required for the ultimate SLI and CrossFire gaming PCs. It delivers more than 90% energy-efficiency and is built to the highest quality standards with one aim alone - to deliver the precise features and performance that enthusiasts demand.Unprecedented Power ProtectionThe Corsair Professional Series Gold power supply pushes the state of the art for reliable delivery of clean power under imperfect conditions. If you require mission-critical stability or you simply want one of the best power supplies available, the…

SpecPicks Verdict

SpecPicks scored Corsair Professional Series AX 1200 Watt ATX/EPS Modular 80 PLUS Gold 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

An ultra-quiet double ball-bearing fan delivers excellent airflow at an exceptionally low noise level by varying fan speed in response to temperature.
A Seven year warranty and lifetime access to Corsair's legendary technical support and customer service.
80PLUS Gold certified, delivering up to 90% energy efficiency at real world load conditions.
High-quality Japanese capacitors provide uncompromised performance and reliability.
80PLUS Gold certified, delivering up to 90% energy efficiency at real world load conditions.
A Seven year warranty and lifetime access to Corsair’s legendary technical support and customer service.

Full Specifications

Brand	Corsair
Wattage	1200
Fan Size	12 centimeters
Model Name	CMPSU-1200AX
Form Factor	ATX
Model Number	CMPSU-1200AX
Connector Type	Floppy, SATA
Cooling Method	Air
Number of Fans	1
Output Wattage	1200 watts
Item Dimensions	10 x 6 x 4 inches
Mfr Part Number	CMPSU-1200AX
Number of Items	1
Compatible Devices	Personal Computer
Power Supply Design	Full Modular
Warranty Description	Seven Years
Maximum Input Voltage	264.5 volts_of_alternating_current
Minimum Input Voltage	110 volts_of_alternating_current
Item dimensions L x W x H	10 x 6 x 4 inches
System Bus Connector Type	ATX

Ready to buy?

Amazon shows no buyable offer for Corsair Professional Series AX 1200 Watt ATX/EPS… at the last check. A similar in-stock product is ASUS TUF Gaming 1200W Gold. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

View Similar — $226.99