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Cooler Master > 
Item#: N82E16817171052

Cooler Master GX - 650W Power Supply with 80 PLUS Bronze Certification

  • ATX12V v2.31
  • 80 PLUS BRONZE Certified
  • 90 - 264 V 47 - 63 Hz
  • +3.3V@25A, +5V@25A, +12V@52A, -12V@0.5A, +5VSB@2.5A
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The Cooler Master GX Series power supplies stand for Gamer Xtreme, the evolved version of Extreme Power Plus. There is enough power to start up a truck thanks to a single rail. With so much power at your disposal, Cooler Master meets the most stringent safety standards.

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.

  • newegg ATX12V V2.31 Compatible Compatible with the ATX12V v2.31 standard, the Cooler Master RS650-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 80 PLUS Bronze Certified The 80 PLUS Bronze certified power supply provides high power efficiency of at least 82% at any load between 20% and 100%, saving your money on your electrical bill, reducing heat in your computer's system and prolonging its life.

Learn more about the Cooler Master RS650-ACAAD3-US


GX Series


ATX12V v2.31
Maximum Power
1 x 120mm
Main Connector
+12V Rails
PCI-Express Connector
2 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 V
Input Frequency Range
47 - 63 Hz
Input Current
10A @ 115V, 6A @ 230V
+3.3V@25A, +5V@25A, +12V@52A, -12V@0.5A, +5VSB@2.5A
>100,000 Hours
TUV / CE / UL / FCC / BSMI / GOST / C-tick / CCC / KCC
5.9" x 5.5" x 3.4"


1 x Main connector (20+4Pin)
1 x 4+4-Pin ATX/EPS 12V
3 x Peripheral
6 x SATA
1 x Floppy
2 x PCI-E
Protection: UVP / OPP / OTP / SCP


Cooler Master
Model Name

Quick Info


  • Limited Warranty period (parts): 3 years
  • Limited Warranty period (labor): 3 years

Customer Reviews of the Cooler Master RS650-ACAAD3-US

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  • Yadir Y.
  • 10/2/2014 1:51:19 PM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

3 out of 5 eggsGood while it lasted

Pros: -Awesome power for the price
- Good while it lasted

Cons: -Gets a little too loud
- Overheating and giving out on me with a system that only requires 400w.

Other Thoughts: I really want a replacement for this product. I checked the warranty and it says five years, here is hoping I have no issues, currently their MRA portion of the site is down..fishy.

Did you find this review helpful? Yes No

  • Francisco R.
  • 6/22/2014 9:55:28 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsworks so good

Pros: have been using this for half of the year now i guess but still works pretty fine and did not hear any of the fans but i dont really have preference on noise but yeah the efficiency is good and more than enough for the system so i guess it will serve me more years.

Cons: none so far

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  • Beniah W.
  • 2/24/2014 5:00:14 PM
  • Tech Level: High
  • Ownership: more than 1 year

5 out of 5 eggsCan't beat this for quality

Pros: Built a system with this power supply 6 years ago, which I'm typing this on right now. Still running strong and quiet. No issues whatsoever, and it's been worked pretty hard. I've even occasionally had it up to 680W (that's output, not input) for a few minutes at a time (to see if it would run 2x 7970 GHz cards mining - it will, but too close to the limit for me), and it just keeps going. Love it, love it, love it.

Cons: None. Does what it says on the box, without complaining.

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  • Anonymous
  • 2/10/2014 7:01:24 AM
  • Tech Level: Average
  • Ownership: 1 month to 1 year

5 out of 5 eggs

Pros: Well, I bought this product because of the amps it has on the +12Vrail but after testing this power supply for some weeks, it has been really great!

The fan is very silent, even whilst gaming this thing is a beast. It stays very cool, less than 50ºc almost everytime, it has 2 6+2 PCI power connectors for SLI/CrossfireX.

This was tested using a system containing:
i7 4770
GTX 660

Cons: The cables are too long, which causes poor cable management, I suggest getting this with a Full Tower case., other than that, none.

Other Thoughts: I'm really happy that I chose this PSU, I was going to get a Corsair one but there were none left as I didn't bought this product here, and I wasn't dissapointed

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  • Aaron W.
  • 1/24/2014 7:58:20 PM
  • Tech Level: Low
  • Ownership: 1 month to 1 year
  • Verified Owner

2 out of 5 eggsOnly powers Motherboard

Pros: Cant say much

Cons: My powersupply can only power up my motherboard, and nothing else. I have a couple of fans, a DVD tray, and the CPU fan. I have no clue what I am doing, but I assume my power supply should power up my PC without any problems. Everthing that needed power is connected, so Im not sure if I have a faulty Power supply, or I am screwing up.

Manufacturer Response:

Dear Customer,

We sincerely apologize for any trouble. If you require assistance, we can definitely help point you in the right direction. Would you be able to contact us so we can assist you in rectifying the situation?


Marvin R.
CMUSA Support.

Live Chat:



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  • Benjamin N.
  • 12/19/2013 2:27:04 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year

1 out of 5 eggsUnreliable

Pros: I purchased the Cooler Master GX 750W power supply. At first I loved it. It was quiet, sleek looking, and responsive.

Cons: Unfortunately, after using it for only three months, it died on me. No warning, I shut the computer off, and came back to reboot it after being gone for three days. My computer wouldn't start. As I opened it up and started diagnosing the hardware, I realized that nothing was getting power at all. I ran the paper clip test, which worked at first, but then when the system didn't start up, I re did the paper clip test and met no success. Unfortunately, it not only failed, but it failed at a time I needed it the most.

Other Thoughts: Worse, the warranty provided by the manufacturer expired the day I purchased the product. I am running in circles trying to get the warranty extended. My opinion. Spend a little more and get a power supply from another more reliable company.

Manufacturer Response:

Dear Ben,

We apologize for the trouble that your are experiencing with your GX-650 power supply. This power supply comes with a 5 year warranty so it is still under warranty. Please contact us so that we can get you a replacement.


CMUSA Support

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  • Jason M.
  • 12/14/2013 5:20:45 PM
  • Tech Level: Average
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsStill going strong!

Pros: My unit was purchased January 31st 2011!

It's been through numerous power outages, basically ran through entire hot humid summers, running my machine 24/7.

It powers a basic, old Q8200 based rig with a GTX 560 Ti and I've had no problems with this PSU whatsoever, never had to replace it, or contact CM support.

Cons: I guess they realised the reliability of their product and added a premium. heh.

Other Thoughts: I would recommend this PSU to anyone who is gunning for a casual gaming PC or HTPC. I bought this in January 2011 and it's still going strong.

Did you find this review helpful? Yes No

  • 11/29/2013 8:06:01 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsWorks excellent!

Pros: -Exceeds what I need in wattage (by a little bit).
-No problems with the voltage rails
-Just put it in and it worked like it should
-Got it on a 60% off sale, it seems. I got this for 39.99USD and I didn't even know it was $100 list price!
-Guaranteed at least 82% efficiency in the AC to DC conversion process; very good for such a good price I got!

Cons: -Can't complain about 650W for $40

Other Thoughts: I utilise this with:
AMD Phenom II x4 970 @4GHz 125W
AMD Radeon HD 7870 GHz 2GB
4 or 5 case fans

Did you find this review helpful? Yes No

  • Michael B.
  • 11/29/2013 9:05:52 AM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsVery Reliable Power Supply

Pros: I've had this power supply for over 3 years and it's still rocking as a gaming pc power supply. Never had any problems with it and would recommend it to anyone who wants a very reliable power supply for their gaming set up.

Cons: None

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  • Donna V.
  • 11/23/2013 4:58:56 AM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggsReview

Pros: 1. Price
2. Clean-ish Power
3. Stable

Cons: 1. Somewhat Short Cable Lengths
2. Came without mesh as shown in picture(s) (Cable ties instead)
3. Power isn't entirely clean

Other Thoughts: My power supply didn't come with the black mesh that the picture(s) show and was instead replaced with white cable ties.. The power isn't entirely "clean", I would say maybe 87% "clean".. The cables are pretty short, not TOO short, but could be a bit longer.

Overall it's not a bad power supply.. I won't buy another one, but it worked and still is working. I took 1 egg off for the mesh issue, cable length issue, and power cleanliness issue.

3.7 / 5.0 Eggs

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