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Corsair Professional Series Gold CMPSU-1200AX 1200W ATX Fully Modular 80PLUS Gold Power Supply

Corsair Professional Series Gold CMPSU-1200AX 1200W ATX Fully Modular 80PLUS Gold Power Supply - 1
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Corsair Professional Series Gold CMPSU-1200AX 1200W ATX Fully Modular 80PLUS Gold Power Supply - 53721_l.jpg Corsair Professional Series Gold CMPSU-1200AX 1200W ATX Fully Modular 80PLUS Gold Power Supply - 53721_1.jpg Customer Photos (0)
Reg. Price: $299.98  CAD
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SKU: 53721
Shipping Weight: 10.4lbs

Part #: CMPSU-1200AX

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Product Videos [ Edit ]

Features [ Edit | History ]

Unprecedented Power Protection
The 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 Professional Series Gold is for you.

A Fully Modular Cabling System
All cables detach from the power supply. During installation, this gives you the flexibility of using only the cables you need for a clean system build with optimal airflow. And, when it’s time to replace or upgrade your power supply, it can be removed from your system without interfering with your cabling – the cables stay in place and connect to your new fully-modular Corsair power supply.

Incredible Efficiency
With 90% efficiency at 50% load, the Corsair Professional Series Gold power supply runs quieter, generates minimal excess heat, and saves you money every month. It’s earned the 80 Plus® Gold seal of approval, your guarantee that you’re making the right choice for smart, efficient power delivery.

• The latest ATX12V v2.31 and EPS 2.92 standards and it is backward compatible with ATX12V 2.2 and ATX12V 2.01 systems.

• An ultra-quiet double ball-bearing fan delivers excellent airflow at an exceptionally low noise level by varying fan speed in response to temperature.

• 80PLUS Gold certified, delivering up to 90% energy efficiency at real world load conditions.

• Active Power Factor Correction (PFC) with PF value of 0.99.

• Universal AC input from 90~264V. No more hassle of flipping that tiny red switch to select  the voltage input!

• A dedicated single +12V rail offers maximum compatibility with the latest components.

• Over-voltage and over-current protection, under-voltage protection, and short circuit protection provide maximum safety to your critical system components.

• High-quality Japanese capacitors provide uncompromised performance and reliability.

• The completely modular cable system allows you to use only the cables you need. Power supply upgrade and replacement is easy, as the cables only need to be disconnected at the power supply.

• Low-profile, flat cable design reduces air friction and helps maximize airflow through your computer’s chassis.

• A Seven year warranty and lifetime access to Corsair’s legendary technical support and customer service.

• Safety Approvals: UL, CUL, CE, CB, FCC Class B, TÜV, CCC, C-tick.

Specifications [ Edit | History ]

Power Supply Specifications

AC Input 90-264V ~ 15A 50/60Hz
DC Output +3.3V +5V +12V -12V +5Vsb
Max. Current 30A 30A 100.4A 0.8A 3.5A
Max Combined Wattage 180W 1204.8W 9.6W 17.5W
1204 @ 50°C ambient temperature

Connectors Included

ATX 24 pin & 20 pin compatible

EPS/ATX12V 8-4 pin

PCI-E 6+2 pin


4 pin Peripheral


Customer Reviews of Corsair CMPSU-1200AX

Product reviews on are screened for relevance and inappropriate content. Reviews may contain inaccurate information about the product. If there is a discrepancy, please use the Flag this Review link located beside each review. Reviews are not an endorsement expressed by, but opinions from customers based on their own experience with a product. We do not recommend you make purchasing decisions based on facts or opinions expressed regarding Corsair CMPSU-1200AX reviews.
Experience: 1 Years


best of the best
Cons expensive-pricematch needed


great psu. extra long size can be a fit problem. all the power you will ever need.reliable high quality construction,quiet too

Experience: 4 Months

Verified OwnerVerified Owner


its modular
Cons life time?


This power supply died on me after a week or two of gaming

Rig :
GTX 690
3x corsair force GS
32go corsair vengeance black
Asus sabertooth Z77

i would put 1 star but then it would be review by ncix and taken out i would suggest paying the +100$ to get the AX1200i

Experience: 6 Months

Verified OwnerVerified Owner


tons of power cables for accessories
Cons Price


I am very satisfied with this power-supply. I overclock my cpu and SLI graphics card with the computer on 24/7 and have had zero issues. I thought I had a lot of extra accessories with my water-cooling and lighting but still had leftover cables for future expansion. This power supply is expensive however but the quality is worth it and it is good for those that don't want to go even more overboard with the platinum supply from corsair

Experience: 1 Days

Verified OwnerVerified Owner


1200W plenty of power! It is fully modular
Cons Because it is fully modular sometimes I dont even know if the connector is plugged in properly. For several times the connector fell off... Also it is extra long.


The extra long length is a problem for me. Some SATA cables are not long enough. As I said sometime the connector fell off and I had a hard time figuring out what's wrong.

Experience: 1 Months

Verified OwnerVerified Owner


Fully modular and excellent cable quality
Possibility to get sleeved cable from Corsair.
Cons None


Had this power supply for a month.

I basically bought this power supply because of the amazing review I found while searching the net.

I also wanted to be futureproofed and this has me covered for a loooong time!

Experience: 3 Weeks

Verified OwnerVerified Owner


Fully modular, Extreme quality on everything.
Cons None


Corsair, once again has made a great product with non Cons.
Fully modular, this psu is very easy to play with.
A must for every quad sli build. Would bui another one anytime, i am very satisfied.

Fast shipping, great services.

Experience: 2 Weeks

Verified OwnerVerified Owner


Single rail design, great cable package, very high power, large cooling fan
Cons High price (if you need this to power your hardware, price is probably irrelevant to you anyways :-))


A few PSU's come close to the 1200AX but none beat it in sheer reliable power, build quality and the overall package you get when you buy a Corsair product. This is my third 1200 watt PSU, the other two being Antec (Quattro and High Current Pro) and I can say I will be purchasing Psu's from Corsair from now on. (if this thing ever kicks the can :-P)
1200AX powers: Crosshair IV Extreme, 1090T BE, 8gb Corsair Dominator, Tri 6950's, 2x Raptors Raid0, dual loop/4 pump water loop and 12x Triebwerk tk-121 fans.

Experience: 4 Months

Verified OwnerVerified Owner


Easy to use cable management
Steady power
Enough to satisify any build
Great Warranty and customer service from Corsair
Cons none


I've been running this PSU for 4 months on my gaming build from August 2011. It currently runs 2 580GTX, 2600k n 5ghz, 8gb dominator ram, SSD, HDD, full watercooling including 8 gentle typhoon fans without a hitch. It's been quiet and reliable even under long gaming sessions. Fantastic piece of hardware for the enthusiast.

You can see my build here on the NCIX forums under PC Builders Workshop or through the following link:

Experience: 4 Months


-80 Plus gold effeciency
-Quiet & cool
-Lots of different cables
-Nice looking quality black cables
Cons -Expensive


-A power supply that will most likely give you more than enough wattage for any computer build!

Experience: 4 Months

Verified OwnerVerified Owner


-Gold certified
-Good looking
Cons -None


I love this power supply. It has enough juice to almost power any kind of system. Corsair's built quality is always spectacular, and this unit is not different.

NCIX Forum Messages

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Messages about Corsair Professional Series Gold CMPSU-1200AX 1200W ATX Fully Modular 80PLUS Gold Power Supply

Cable lenght (TigerLord- Jan 08, 12, 3 Replies) Read this message
Noisy caps/chokes (Scott_K- Sep 13, 11, 14 Replies) Read this message
enough for 480 3way SLI?? (acer_c- Oct 27, 10, 3 Replies) Read this message
Updated ETA: Corsair 1200W AX CMPSU-1200AX 08/06 (Terren - Aug 19, 10, 22 Replies) Read this message
Next Shipment...? lol (josh_m- Aug 02, 10, 10 Replies) Read this message
the 1200 watt Corsair is here (Shane_P- Jun 25, 10, 28 Replies) Read this message
Thumbs down for Single Rail units (Aaron_B- Jun 22, 10, 64 Replies) Read this message
How long is this? (theflyingdutchman- Jun 09, 10, 2 Replies) Read this message

Post a New Message  |    All Messages       Browse NCIX Forums

Forum messages are not reviewed and may not contain accurate information about a product. Message contents are opinions from customers based on their own experience with a product. We do not recommend you make puchasing decisions based on Forum messages.

Reviews from the Web

Below are reviews found on other web sites for this product submitted by customers.

Comment: 10/10 Hardwareheaven Gold & Performance Awards
Posted by: Alex01 @08/31/10
Comment: Clean DC outputs with low AC ripple. Quiet during normal operation. Very good build quality with high quality components. Backed by a 7-year warranty.
Posted by: Lord Babaghan @08/16/10
Comment: Corsair has built a tremendously solid brand in the computer power supply market over the last couple of years. Today it steps into a new realm, that being the 1200 watt market. Making great PSUs gets harder as the power scales. Let's see if Corsair can ride the winds once again and pull off a b
Posted by: Fishsticks @07/15/10
Comment: At the end of the day the AX1200 is an all-round belter of a PSU. It's got the looks, the performance, the warranty and even the packaging.
Posted by: Lord Babaghan @06/27/10
Comment: Very positive review of the AX1200
Posted by: cheuk_s @06/06/10
Submit a review link   |   Latest 30 reviews

Product Warranty

First 30 days limited warranty through The remainder of the 3 year warranty is provided directly by the manufacturer.

Corsair's DRAM memory modules all carry a lifetime warranty. The Flash Voyager, Flash ReadOut, TurboFlash, Flash Survivor and Mini Flash products all have a warranty for the expected normal life of the product (10 years). The Flash Padlock has a warranty of 3 years. The HX, TX, and VX Series of Power Supplies have a 5 year warranty, and Liquid Cooling products carry a one year warranty. In general, this means Corsair products are guaranteed to operate, as specified by their datasheet, and in the operating environment for which they were intended, for the life of the product or the extent of the warranty.

For additional information and technical assitance, please visit Corsair Memory's support site at:

Corsair Technical Support

Phone:  1-800-205-7657

Sales Policy

All pricing subject to change. For all prices, products and offers, reserves the right to make adjustments due to changing market conditions, product discontinuation, manufacturer price changes, errors in advertisements and other extenuating circumstances. Promotional offers from are subject to availability and are available only while supplies last. No rain checks will be issued on promotional items and offers.

While uses all reasonable efforts to include accurate and up-to-date information on the Site, makes no warranties or representations as to the Site's accuracy. assumes no liability or responsibility for any errors or omissions in the content on the Site. warrants product(s) to be in good working condition and free from defects in material and workmanship for a period of one (1) year for OEM packages, and for thirty (30) days for RETAIL packages (excluding laptops and notebooks), from the original Invoice date unless otherwise restricted below or by the manufacturer's own warranty policy. Defective returns and warranty service will be replaced, exchanged or repaired at's sole discretion, and based on vendor's policy.

NON-DEFECTIVE merchandise returns may be accepted on some items ONLY within 15 days of the Invoice date, at's discretion. Laptops and Notebooks can be returned within SEVEN (7) days from original invoice date. Return will only be accepted with original packaging, accessories, cables, free gifts (if applicable), unopened software and manuals and is subject to inspection before warranty approval. Laptop and notebook with tampered serial numbers or UPC code will be denied returns.

GOVERNMENT & BUSINESS Laptop and Notebook purchases made with government or business POs can be returned typically within fourteen (14) days from original invoice date. Return will only be accepted with original packaging, accessories, cables, free gifts (if applicable), unopened software and manuals and is subject to inspection before warranty approval. Laptop and notebook with tampered serial numbers or UPC code will be denied returns. Please check with your B2B sales representative for specific terms and details.

All NON-DEFECTIVE returns are subject to a 15% restocking fee. No refunds will be issued for blank media, digital camera (and accessories), opened software, printers, printer supplies, paper, projectors (and accessories), appliances, handhelds, PDAs, notebook computers, special order computers and special order items.

Defective software, video games or DVDs will be replaced by the SAME title and format ONLY (and subject to current availability) within 30 days of the Invoice date. Software, Drones, video games and DVDs may be returned within 30 days only if the item is UNOPENED (with shrink wrap still intact) at the sole discretion of does NOT apply a surcharge to credit card orders. Please read our RMA & warranty policy and terms & conditions for more information. If you have any questions regarding our sales and warranty policies, please send us a message -- we'll be glad to answer any of your questions.


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