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

by Corsair
| 3 answered questions

Available from these sellers.
AX1200
  • 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.
  • High-quality Japanese capacitors provide uncompromised performance and reliability.
  • An ultra-quiet double ball-bearing fan delivers excellent airflow at an exceptionally low noise level by varying fan speed in response to temperature.
1 new from $552.59 3 used from $275.00

PSU Selection in Four Simple Steps
Need help picking a power supply unit? Corsair's PSU finder will guide you through requirements and compatibility issues, ensuring that you make the right choice for your system. [PDF]

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Technical Details

Style: AX1200
  • Brand Name: Corsair
  • Model: CMPSU-1200AX

Product Details

Style: AX1200
  • Product Dimensions: 10 x 6 x 4 inches ; 1.3 ounces
  • Shipping Weight: 9.8 pounds
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • ASIN: B003PJ6QVU
  • Item model number: CMPSU-1200AX
  • Average Customer Review: 4.4 out of 5 stars  See all reviews (267 customer reviews)
  • Product Warranty: For warranty information about this product, please click here
  • Date first available at Amazon.com: June 4, 2010

Product Description

Style: AX1200

Product 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 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.

From the Manufacturer

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 Corsair's renowned quality standards with one aim alone — to deliver the precise features and performance that enthusiasts demand.

Product Features

  • Supports the latest ATX12V v2.31 and EPS 2.92 standards and is backward compatible with ATX12V 2.2 and ATX12V 2.01 systems
  • An ultra-quiet 120mm double ball-bearing fan delivers excellent airflow at an exceptionally low noise level by varying fan speed in response to temperature
  • 80 PLUS Gold certified to deliver at least 90% efficiency at 50% load
  • Active Power Factor Correction (PFC) with PF value of 0.99
  • 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
  • Completely modular cable system allows you to use only the cables you need
  • Low-profile, flat cable design reduces air friction and helps maximize airflow through your computer's chassis
  • Safety Approvals: UL, CUL, CE, CB, FCC Class B, TÜV, CCC, C-tick
  • What the Experts are Saying...
    Award 1

    "Corsair is well known for producing some of the best PC power supplies on the market today and the AX1200 continues that trend. The Corsair Professional Series Gold AX1200 power supply delivers clean DC outputs, with excellent efficiency and good voltage regulation. The AX1200 comes with an excellent assortment of all-modular cables that can support the latest CPUs and multiple, high-end video cards. And let's not forget active PFC, universal AC input and Corsair's 7-year warranty!" - PCPerspective July 26, 2010

    Award 2

    "There is a whole lot to like about the new Corsair AX1200, and very little indeed to hate. Lots of power, lots of connectors, and all of those connectors come off if you want them to. And we can't forget about the efficiency, which just about outclasses everything else I've ever tested. Do you need any other reason to buy one?" - JonnyGuru June 5, 2010

    Award 3

    "A near flawless product from Corsair which continues to enhance their reputation for producing the industry's best PSUs." - HardwareHeaven August 4, 2010

    Corsair Professional Series - Specifications

    Specifications AX750 AX850 AX1200
    Wattage Output 750 850 1204
    Efficiency 80+ Gold 80+ Gold 80+ Gold
    Hybrid Silent Fan Control Yes Yes No
    +12V Rating 62 Amps 70 Amps 100.4 Amps
    Continuous Power Output 750 Watts @ 50°C 850 Watts @ 50°C 1204 Watts @ 50°C
    Warranty 7 Years 7 Years 7 Years
    Size 150mm(W) x 86mm(H) x 160mm(L) 150mm(W) x 86mm(H) x 160mm(L) 150mm(W) x 86mm(H) x 200mm(L)
    Power Supply Image
    Corsair AX750 PSU
    Corsair AX850 PSU
    Corsair AX1200 PSU
    More Information
    Click Here
    Click Here
    Click Here

    Efficiency
    AX1200 Efficiency
    Fan Noise
    AX1200 Noise

    Why choose a Corsair Professional Series AX power supply?

    Incredible Efficiency
    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.

    Fully Modular Cabling
    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.

    7 Year Warranty
    7 Year Warranty

    Corsair strives to ensure the quality and reliability of our power supplies, which is why the Corsair Professional Series Gold power supplies are provided with a seven year limited warranty. They are also backed by Corsair's legendary customer service and technical support.

    Connectors and Cable Length

    Connector Type Quantity Length (mm) Length (inches) Connectors per cable
    ATX Power Cable 1 610mm 24" 1
    EPS/ATX12V CPU Cable 2 610mm 24" 1
    PCI-E Cable (6+2 pin) 6 610mm 24" 1
    SATA Cable 3 850mm 33.46" 4
    SATA Cable 2 600mm 23.62" 2
    Peripheral Cable 3 850mm 33.46" 4
    Floppy Adapter 2 100mm 4" 1


    Customer Questions & Answers

    Customer Reviews

    Fan is quiet.
    Brian
    It comes with every cable you should need, and they're nice, modular cables with black wrapping to make everything look a little nicer.
    MadMarkov
    This thing will power just about anything the average computer user can build right now.
    Kevin

    Most Helpful Customer Reviews

    46 of 50 people found the following review helpful By Reviewer Amazon on November 20, 2010
    Style Name: AX1200
    I have now been using this for about a week and am very impressed. I upgraded from an Enermax Revolution 85+ 1050 Watt Power Supply which was a critically acclaimed unit itself. I love the fact that this power supply is FULLY modular. Whenever you have to replace it you can just undo all the cables from the PSU and leave the cables intact in your case. You then can remove the power supply easily and install the replacement (which of course would be a Corsair too)! Remember, the hardest part about installing or replacing a power supply is organizing the cables in your case. This is very time consuming.

    The power supply runs very cool, but I am only using about 25% of its power capacity right now. Unlike other reviewers who base their reviews on performance subjectively, I did test the power supply before I installed using a Coolmax power supply tester. Everything was tight!

    While there are other power supplies out there that compete with this (like the newly released Antec HCP 1200 Unit, I chose the Corsair because they have always been about Quality and Performance for the enthusiast from their memory only days. This unit also comes with a 7 year warranty versus 5 for the Antec and other competeing units.

    You can also get hold of Corsair by phone if you need to! They do not hide their phone number like other vendors all over the web.

    While this power supply is probably overkill for most, if you are a Computer Enthusiast, Overclocker, and/or Multi-GPU Gamer, this is YOUR POWER SUPPLY. Well done Corsair! Superb...........
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    22 of 22 people found the following review helpful By Brock Tice on May 31, 2011
    Style Name: AX1200 Verified Purchase
    This is a great power supply. I'm abusing it with bitcoin mining 24/7. They throw in a lot of fancy stuff, velvet bag, etc, but cheap out on the 12V sockets on the ATX connector. They're only rated for 6A or so and it's easy to pull more than that.

    What this means is that if you put in 3 PCI-e video cards that each draw 75W (through the socket) you will burn the plastic off the ATX connector around those sockets, and then your computer will randomly shut off. I called Corsair to discuss this and they at least said they'd look into it.

    If you want to fix it yourself it's not too hard with less than $20 worth of parts from DigiKey. Feel free to comment/contact me if you want the part numbers. It's a a lot cheaper/easier to fix it before you burn the plastic off. (I also have pictures, if you want to see them, I don't think I can link them here. Look up my blog if you want to see.)

    I'm still giving it five stars because I know this is really an edge case, but I think it's going to be more common soon. I'll also note I had this happen with a 1kW CoolerMaster PSU. Basically all consumer PSUs use cheap sockets there instead of Molex HCS sockets. Just to give you some idea how silly this is, those sockets cost ~0.50 each (needed: 2) when buying in single-item quantities. It drops to just a few cents apiece when buying in bulk (as Corsair would). How much does a velvet bag cost?
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    25 of 27 people found the following review helpful By Timothy M. Richmond on September 27, 2010
    Style Name: AX1200 Verified Purchase
    Wow, this power supply is great. It has all modular cables, no guess work on where to plug them in since it is all on one rail, is totally silent, and looks good in a typical black mid-tower case. I haven't heard a peep and I have been able to overclock my Intel i7 processor about 550 mhz and both of my GTX480 video cards with no noticeable noise and no, zero, nada freezes or reboots. So therefore I recommend this as a worry free power supply to buy.
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    12 of 12 people found the following review helpful By Donald R. Hoffman on May 27, 2013
    Style Name: AX760 Verified Purchase
    I really do love these PSUs. I have another of the "i" series which is king-of-the-hill, but this is the best value. Tremendously stable and efficient. Fan rarely runs. Just remember to re-check your modular connectors are plugged into the appropriate place, as they will fit in the wrong place. Also,check that they have not pulled out after mucking around with your cables!!!
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    7 of 7 people found the following review helpful By Moo on December 30, 2013
    Style Name: AX760
    Update(3/16/2014):Made some big upgrades to my PC and noticed the little pin which holds the modular CPU connector to the power supply itself has broken off and gone missing. Not a big deal, but would be nice if it hadn't broken off so early. Also the 6/8 pin PCIe connectors seem to be rather difficult to bend the extra 2 pins away to install on my new GTX770(power connectors directly next to each other).

    Pros: It has a 7 year warranty, is fully modular, with completely blacked out cables. Has a Hybrid/Normal switch for the 120mm fan operation though I can't see why people would use anything but hybrid. Silent as far as I can tell, whether the fan is on or off it surely gets no louder than any of my other components(fan facing down in my 600T case). Very highly rated among tech review sites that have the gear to put these things to the test, and it should be with an 80Plus Platinum rating. It comes with a bag including all the cables you could ever need, and even a bag that the power supply itself comes in, a few cable ties, and some screws for mounting. It's rather small compared to my 7 year old 680 watt thermaltake power supply that it replaced, and isn't necessarily more quiet(no louder either)...but that power supply was already quiet even with 2 fans on all the time(90mm I think). It's not all flat cables, some might think of that as a con, but I feel it's a pro(see con's for why).

    Cons: The CPU cable made it with enough slack, but I was worried with how short it was. I did have to use the closest modular connector on the power supply and the closest wire management hole(near the power supply) on my case to make sure it had enough slack. I could see the CPU connector having difficulties making it in a good sized full tower case.
    Read more ›
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