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Power Supplies > 
Cooler Master > 
Item#: N82E16817171060

Cooler Master GX - 450W Power Supply with 80 PLUS Bronze Certification

  • ATX12V v2.31
  • 80 PLUS BRONZE Certified
  • 90 - 264 VAC (Auto Range) 47 - 63 Hz
  • +3.3V@24A, +5V@15A, +12V@35A, -12V@0.3A, +5VSB@2.5A
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The hallmark of the GX Series of power supplies is that they feature a single, highly robust 12V rail that efficiently and consistently delivers clean power to all of your critical components such as your processor, drives, RAM, motherboard, and graphics cards.

An included double-layer EMI filter, intelligent 120mm controllable fan, and an active PFC/PWM combo controller all contribute to the overall efficiency of the power supply. All of the many features found within the GX Series contribute to its 80 Plus Certification. This efficiency allows the power supply to utilize most of the power it takes in with minimal waste, saving your electric bill. It makes the GX450W a perfect addition to a home theater PC or mid-range computer setup.

  • newegg ATX12V V2.31 Compatible Compatible with the ATX12V v2.31 standard, the Cooler Master RS450-ACAAD3-US power supply provides maximum power stability to drive the latest Intel and AMD processors as well as other system components.
  • newegg Single +12V Rail Tackling challenges from the most power-intensive peripherals head on, this solitary 12V power rail provides ample power and strong resistance to any overloading.
  • newegg High Efficiency Design Incorporating double layer emi filter and dual forward design, the Cooler Master RS450-ACAAD3-US delivers high efficiency that meets 80 Plus requirements (85% typical). Efficient transformer reduces 5Vsb power loss when the system is in an off/sleep state. This leads to les than 0.5W of power consumption in standby mode, which is EuP ready.

Learn more about the Cooler Master RS450-ACAAD3-US


GX 450W


ATX12V v2.31
Maximum Power
1 x 120mm controllable fan
Main Connector
+12V Rails
PCI-Express Connector
1 x 6+2-Pin
SATA Power Connector
Haswell Support
Power Good Signal
Hold-up Time
17ms min.
85% typical
80 PLUS BRONZE Certified
Over Voltage Protection
Input Voltage
90 - 264 VAC (Auto Range)
Input Frequency Range
47 - 63 Hz
Input Current
7A @ 115VAC , 3.5A @ 230VAC
+3.3V@24A, +5V@15A, +12V@35A, -12V@0.3A, +5VSB@2.5A
>100,000 Hours
CE / FCC / UL / TUV / C-Tick / GOST / BSMI / CCC / KCC
5.9" x 5.5" x 3.4"


1 x Main connector (20+4 Pin)
1 x 4+4 Pin CPU
1 x PCI-E
5 x SATA
3 x Peripheral
1 x Floppy
Compliance with the latest Intel standard ATX 12V V 2.31

Single +12V rail provides ample power and strong resistance to any overloading

High efficiency design that meets 80 Plus requirements (85% typical)

Multiple protection designs (OVP / UVP / OPP / OTP / SCP)

High reliability (MTBF>100,000 hours)

Double Layer EMI filter reduces Electromagnetic interference

Huge bulk capacitor for hold-up times of >17ms when fully loaded

Efficient transformer that reduces 5Vsb power loss when the system is in an off/sleep state

EuP ready: To save most power consumption (below 0.5W in standby mode)

Quick Info


  • Limited Warranty period (parts): 5 years
  • Limited Warranty period (labor): 5 years

Customer Reviews of the Cooler Master RS450-ACAAD3-US

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  • Thanh L.
  • 7/24/2014 10:16:47 PM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsIt's alright but I would go for something bigger if you planning to play games.

Pros: Low noise, extra cables, not too big. Running smoothly after a year.

Cons: The fan getting loud after 1 year of usage.

Other Thoughts: I should have go for something like 600 Watt and above. 450 Watt won't go anywhere with overclocking and gaming...

Did you find this review helpful? Yes No

  • VOK
  • 5/25/2014 1:15:22 AM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggsWorks As Intended

Pros: The Cooler Master GX - 450W does exactly what it is suppose to do.

Cons: I am curious as to why Cooler Master thought it was a great idea to make the logo a bright pink on the PSU. I was fully aware of said color choice on the product when bought, but it looks a lot worst than I imagined. This might not be the best PSU to purchase if you intend on showing off the guts of your tower.

1 out of 1 people found this review helpful. Did you? Yes No

  • Stewart P.
  • 5/9/2014 6:03:27 AM
  • Tech Level: Average
  • Ownership: 1 day to 1 week
  • Verified Owner

4 out of 5 eggsBuild is done

Pros: Power supply is stable and very guiet.

Cons: None as yet

Other Thoughts: Build is finished. bought as part of a super combo. Very satisfied..

Did you find this review helpful? Yes No

  • Stewart P.
  • 5/6/2014 6:44:35 PM
  • Tech Level: Average
  • Ownership: less than 1 day
  • Verified Owner

3 out of 5 eggsFinally here

Pros: .

Cons: .

Other Thoughts: Bought this as part of a system. Didn't realize that they were out of this and they had to ship it from the US (surprise). Got it today, should of got it Saturday
but Purolator doesn't work weekends. Will let you know how it runs after build.

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  • Peter G.
  • 3/22/2014 7:01:04 AM
  • Tech Level: Average
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsCooler Master GX

Pros: Sturdy and Powerful.
Fan is quiet.
It is 80 plus bronze.
Works very well with Haswell CPUs.

Cons: Not Modular.

Other Thoughts: You need to really push in some of the power cables to get them to work. They're a bit difficult to put in the sockets.

Did you find this review helpful? Yes No

  • Jason N.
  • 3/10/2014 9:10:16 PM
  • Tech Level: High
  • Ownership: more than 1 year

1 out of 5 eggsdisappointed

Pros: very quiet and plenty of connector types

Cons: only 2 years old and the fan is already going bad. Opened it up and of course it has a proprietary connector on the fan so it cannot be replaced.

Other Thoughts: so disappointed in this product. i buy a lot of CoolerMaster power suppplies for my custom builds, but no more.

Manufacturer Response:

Hi TechGuy,

We sincerely apologize for the trouble you are having with the power supply. We can definitely help in replacing that power supply under the 5 year warranty it carries. Would it be possible if you can contact us so we can help rectify the situation? We definitely appreciate the feedback.


Marvin R.
CMUSA Support.


1 out of 1 people found this review helpful. Did you? Yes No

  • Alice B.
  • 3/6/2014 7:28:37 PM
  • Tech Level: Average
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggs27 months and counting

Pros: Quiet
Price after rebate was very competitive for the wattage
Good connector flexibility

Cons: Doesn't brew coffee

Other Thoughts: Got this 27 months ago, This was my first PS purchase, so I knew little to nothing about them and went with a list of brands recommended by people at PC support sites. This unit runs so quietly you have to eliminate all other noises in a room just to hear it. For a basic PC build that doesn't leech megawatts, this has more than enough juice. The connectors are quite supple and can be moved easily to accommodate tight case interiors. I'm a little surprised that the price hasn't dropped at all in a little over 2 years, but if I ever need a 450w or less PS again, I'd still buy this over taking a chance on anything else.

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  • Timothy B.
  • 2/24/2014 10:41:22 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

3 out of 5 eggsGX 450W

Pros: -Price point
-5 year warranty
-Protection systems work
-Japanese capacitors

Cons: -Bad ripple and unstable voltage on the 12V line
-Is not truly 80+ Bronze as advertised - only 80+

Other Thoughts: First, this power supply is only 80+ and the label on it shows this and is also noted in Hardware Secrets review and others. However, all GX 450 W's are now the D series manafactured by Enhace, which is better than the old E series 450's manafactured by Seventeam. A small plus for this PSU.

I was drawing about 380 W's with my system and it managed that, but monitoring with HW monitor and Asus Monitor showed it was only putting out about 11.48 to 11.5 volts on the 12 V rail. I decided to experiment and push it further to see what it would do, by adding components and OC'ing my processor to draw about 420 to 430W's and the voltages were all over the place. This is also noted in third party reviews. I then decided to push it as far as it would go and the protection system kicked in - as it should - and restarted the system. So it's protection system works well, but it for sure will not put out more than it's rated 450W's as another reviewer here said. So if you are using it for a low wattage build or in an HTTP system it will, suffice if you're not concerned about the fact that it's 12V rail will still only give less than rated voltage. Not acceptable by me though.

I replaced it with another much better PSU that almost rhymes with teatonic and the same monitoring tools showed the 12V rail never lower then 11.9. I considered warrantying or sending this back but what for? To get a new one that would be the same risk and pay shipping in the process? It is now my interim backup in case of failures on other machines

I wanted to like this PSU, and decided to give Cooler Master a chance, as they are working hard to rebuild their rep after some very cheap products, but I would only recommend this PSU for a low wattage system or a cheap interim backup to get you through, and even them it's iffy.

Manufacturer Response:

Dear customer,

We apologize for any confusion you had with our power supply. The unit in question that is sold on newegg and the unit you mentioned in the review are different power supplies. The unit on newegg is indeed 80 plus gold (D series as you mentioned). The 80+ version is indeed 80 + and the 80 Gold sold here is 80 Gold. We are not sure if you were speaking of the general or your specific model, but if you were speaking of the line, hardware secrets has no problems with the ripple. So if you had trouble with the ripple, we can definitely help out with a replacement.

In regards to the 12V rail reading, motherboards require a base load of 11.4 to run according to the ATX 2.3 standard, with a max of 12.6 on the 12V line

If you have further questions regarding the ATX standard, the power supply in question, please do let us know.


Marvin R.
CMUSA Support.

Live Chat:



1 out of 1 people found this review helpful. Did you? Yes No

  • Alex S.
  • 11/2/2013 8:29:04 AM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsGood Power Supply

Pros: Does what is needed. Great for a basic first build. Good cable management. Looks nice. I had to upgrade for more attachments. There weren't enough power hookups for my graphics cards, only having one PCIE hookup.

Cons: I have had zero problems at all.

Other Thoughts: Just remember to calculate your power consumption needs when building! This may seem low compared to the 700+W (or more) supplies, but you may only be using 150W for a basic, or even 350W for a high end build with one card. Be smart, save money, and buy what your rig needs so you can spend it on other important parts.

Did you find this review helpful? Yes No

  • Timothy N.
  • 10/5/2013 8:51:38 AM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year

5 out of 5 eggsVery efficient and quiet

Pros: known to be able to handle more then 750w with a breeze.

Cons: not known yet.

Other Thoughts: If it is not turning on, you probably didn't connect it to mother board right. DONT FORCE ANYTHING IN. IF the cords are right it should be going in with a slight nudge.

0 out of 1 people found this review helpful. Did you? Yes No

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Item#: N82E16817171060
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