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CoolMax > 
Item#: N82E16817159089

COOLMAX CU series CU-700B 700W ATX12V SLI Ready Modular and Compatible with Core i3/i5/i7 Power Supply

  • ATX 12V v2.2 / EPS 12V v2.91
  • 115 / 230 V
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The CoolMax semi-modular power supply CU-700B lets you select the cables you need for a clean and easy installation while powering your system at a healthy voltage. All output cables with nylon sleeving make management easier and reduce wind resistance to aid airflow. Three +12V rails ensure a balanced output even under the heaviest loads. This power supply provides over voltage protection and short circuit protection.

  • newegg ATX12V v2.2 Compatible Compatible with the ATX12V v2.2 standard, the CoolMax CU-700B power supply provides maximum power stability to drive the processors as well as other system components.
  • newegg 700W Maximum Power The CoolMax CU-700B power supply provides a maximum output of 700W to deliver safe, reliable power for high-end computer systems. Three industry-leading independent +12v rails are provided for more stability and safety.
  • newegg Semi-Modular Cable Design The semi-modular cable design allows use of only the cables you need, resulting in improved internal airflow and reduced system clutter.
  • newegg Efficient Cooling The CoolMax CU-700B is assembled with a 120mm silent fan to increase overall airflow in the power supply enclosure and helps remove heat from the chassis simultaneously.

Learn more about the CoolMax CU-700B


CU series


Maximum Power
120mm Fan
Main Connector
+12V Rails
PCI-Express Connector
2 x 6-Pin
SATA Power Connector
SLI Ready
Over Voltage Protection
Overload Protection
Input Voltage
115 / 230 V
Input Frequency Range
50/60 Hz
+3.3V@28A, +5V@28A, +12V1@18A, +12V2@16A, +12V3@16A, -12V@0.5A, +5VSB@3.0A
5.60" x 5.90" x 3.30"
3.96 lbs.


ATX12V version 2.2

Built-in silent 120mm cooling fan

Semi-Modular cable management improve airflow

PCI-E graphics card power connector

Over voltage protection & short circuit protection

MTBF 100,000 hours



Dimensions & Weight

5.6" x 6" x 3.5"

Manufacturer Warranty

5 years limited
5 years limited

Quick Info


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

Customer Reviews of the CoolMax CU-700B

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  • Vincent R.
  • 7/30/2014 6:19:08 AM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggsbeen working for about 6 months now

Pros: this power supply works relay well for 1 amd gfx and amd processor i don't have a second one to try it with so i can only say with what i have but there both over clocked theres seems to be no problem yet nothing sounding wrong or loud just quite.

Cons: none

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  • Daniel M.
  • 4/28/2014 7:02:44 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year

1 out of 5 eggsOne of the worst PSUs ever.

Pros: Its cheap and semi modular. The fan was quiet and all the connections fit well.

Cons: This PSU blew after just 2 months of use and took my sound card with it. No power surge or anything out of the ordinary. Would not recommend.

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  • Michael P.
  • 8/29/2013 7:26:34 AM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsFantastic Power Supply.

Pros: *Power Supply has lasted so long that I finally retired it today, owned this thing for what must of been 4-5+ years already.
*Silent, under any load that I could throw at it.
*Plenty of connections, cable length is OK for full sized towers.
*Powers my various video cards up-to a GTX 680.

Cons: One day this Power Supply will be retired and that is the con. Goodnight sweet prince.

Other Thoughts: The reason I had to retire it is due to my new video card having a 8-pin connector and this power supply not coming with one. I lost my modular PCI-E cable and had to have 2 molex connectors attached to a PCI-E adapter and another 2 molex adapters making yet another PCI-E adapter to plug in one 8-PIN adapter which then plugged into my video card.

I didn't feel good about having too many adapters connected for safety reasons which is not the fault of the power supply itself, I don't trust having so many adapters daisy chained even though everything powered up and gamed on just fine. I would recommend and buy Coolmax power supplies again in the future.

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

  • Andrew G.
  • 4/9/2013 6:38:11 PM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year

5 out of 5 eggsGreat

Pros: Lasted 5 years problem free.

Cons: Finally started being a little weird 5 years in. Gave warnings before it died.

Other Thoughts: Didn't fry my pc going out.

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  • Francis H.
  • 10/30/2012 5:25:09 AM
  • Tech Level: High
  • Ownership: more than 1 year

5 out of 5 eggsWorks Well

Pros: Runs cool, Quiet

Cons: None

Other Thoughts: Used in a moderate system build (Athlon x2 250, single Nvidia GeForce card) for over 3yrs, no problems. Maybe others are overloading thiers?

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

  • Michael S.
  • 8/26/2012 5:26:05 AM
  • Tech Level: Average
  • Ownership: more than 1 year
  • Verified Owner

3 out of 5 eggsRan great for 3+ years

Pros: Quiet, easy to clean, enough cords and cords are long enough. 3 years of working

Cons: Died with a very loud bang pop and sparks. Took out my mobo, ram, and harddrive. CoolMax very quickly sent out a replacement. The replacement seems to lack the power and causes resets.
ASUS Sabertooth 990fx am3+
AMD FX-8150 8 core
Samsung 64gb SSD
Western Digital 2tb
Gskill sniper series 8gb (2x4gb)
Radeon 5850HD

Other Thoughts: It lasted for 2 and a half years with my original setup
ASUS m4a79xtd mobo
AMD Phenom II x4 955 Black Edition
GSKILL Ripjaws 8gb (4x2gb)
Radeon HD 5850
I upgraded and it died after six months. After getting all my parts warrenty replaced the system has random resets. I replaced the video card with a less powerful card. (one that doesn't need the 2 6pins) The computer now runs without resets. I give it 3 eggs for the 3 years it worked but I would still suggest getting something a bit more powerful for components build in 2012 on.

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  • Anita P.
  • 8/25/2012 1:42:09 AM
  • Tech Level: High
  • Ownership: more than 1 year

1 out of 5 eggsIt exploded.

Pros: Worked for the first year or so I had it.

Cons: PSU started running hot. Then, in the middle of a game of Team Fortress, it freakin' exploded. Loud, dramatic pop noise. Burning plastic/magic smoke smell. I don't have a backup PSU so I'm hoping it didn't take any other parts with it. Do yourself a favor and buy something else, I'm not the only one in this review section that had this happen to them.

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  • Erik P.
  • 8/9/2012 3:18:12 PM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

3 out of 5 eggsExplosions O.o

Pros: Plenty of power for my gaming rig (quad-core AMD processer, 4gb RAM, GeForce 450 GTS).

Cons: After owning this PSU for 3 years, it literally exploded on me during a gaming session...

Other Thoughts: Hopefully, I can get it replaced via warranty claim with Coolmax.

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

  • Nathaniel I.
  • 2/1/2012 5:27:41 PM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

1 out of 5 eggsWill never purchase from this company again

Pros: Kinda worked for a while?

Cons: After MAYBE six months of use, the fan made an AWFUL sound. It was so loud I could be three+ rooms away and still hear it. I called Coolmax, and they did not want to work with me at all. They told me I could send it in, and it would take a minimum of two weeks before they could even LOOK at it, let alone send me an RMA unit! I explained that I was using this in a server environment (gotta love desktop-servers anyway =/ ) and waiting around without any PSU was not possible. I was essentially told they don't care. I couldn't even pay to have them send a new unit, and then have them refund the money once they received this one.

Other Thoughts: It happens. DOA reviews don't scare me because every product spanning every manufacturer will have defects from time to time. It's when a company has a very blatant disregard for their customers that I get weary. This is one of those reviews. This company did not care that their product failed within the first six months. Choose wisely!

2 out of 2 people found this review helpful. Did you? Yes No

  • Andrew B.
  • 1/7/2012 8:06:08 PM
  • Tech Level: High
  • Ownership: more than 1 year

3 out of 5 eggsCheap PSU. Good for non gaming computer.

Pros: Lasted me 2.5 years running a AMD quad core system with a HD4850 GPU.

Cons: Cannot handle an AMD HD6870 GPU

Other Thoughts: Blew up today (literally blew up) after running for 6 months with an HD6870 and 2 Hard Drives

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

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Item#: N82E16817159089
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