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Item#: N82E16817371024

Antec CP-850 850W Continuous Power CPX SLI Certified CrossFire Ready 80 PLUS Certified Modular Active PFC "compatible with Core i7" Power Supply

  • CPX
  • 100 - 240 V
  • 80 PLUS Certified
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The Antec's CP series is exclusively designed for Antec's 1200/P183/P193 cases and provide an excellent price-to-performance ratio. The Antec CP-850 power supply features 80 PLUS certification, saving energy and your money. It also generates less heat, and enhances cooling with a super-silent 120mm PWM fan. The Active PFC circuitry further reduces impact on the power infrastructure resulting in cooler, quieter, and more environmentally friendly power.

The Antec New CP-850’s universal input capability, together with ATX12V v2.3 and EPS12V V2.91 compliancy lets you use it in a variety of situations without worrying about input voltages. Dedicated power circuitry, industrial grade protection circuitry, and Active PFC deliver safe, reliable output. Four +12V output circuits provide maximum stable power for the CPU independently of the other peripherals.

The modular design makes cable management easier. The main power cables are permanently attached, while all of the peripheral cables all plug into the back of the PSU. The cables are all wrapped in mesh for a cleaner installation. Bring new power to your system with this remarkable supply!

  • newegg ATX12V and EPS12V Compatible Compatible with the ATX12V v2.3 and EPS12V v2.91 standards, the Antec CP-850 provides maximum power stability to drive the processors as well as other components for desktop and server computer systems.
  • newegg 850W Continuous Power A continuous power of 850W delivers safe, reliable output for even the most extreme computer systems. Four industry-leading independent +12v rails are provided for more stable and safer power output.
  • newegg 80 PLUS Certified The 80 PLUS certified power supply provides high power efficiency of at least 80% 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.
  • newegg NVIDIA SLI Certified The Antec CP-850 has gone through a series of rigorous NVIDIA SLI certification tests for maximum system stability when building NVIDIA SLI PCs.
  • newegg Advanced Hybrid Cable Management The advanced Hybrid Cable Management System provides an optimal solution for power distribution and airflow by hardwiring mandatory cables to reduce resistance and enabling peripheral cables to be installed as needed to minimize cable clutter for improved airflow.
  • newegg 120mm PWM Fan The Antec CP-850 features a 120mm PWM (Pulse Width Modulation) fan for increased overall airflow and heat dissipation in the power supply enclosure.

Learn more about the Antec CP-850




Maximum Power
850W Continuous Power
1, PWM (Pulse Width Modulation)
Main Connector
+12V Rails
PCI-Express Connector
2 x 6-Pin, 2 x 6+2-Pin
SATA Power Connector
SLI Certified
CrossFire Ready
80 PLUS Certified
Input Voltage
100 - 240 V
Input Frequency Range
47 - 63 Hz
+3.3V@24A, +5V@30A, +12V1@22A, +12V2@22A, +12V3@25A, +12V4@25A, -12V@0.6A, +5VSB@3.0A
>100,000 Hours
4.7"(H) x 6.9"(W) x 7.9"(D)


1 x Main connector (20+4Pin)
1 x 12V(P4)
1 x 12V(8Pin)
9 x Peripheral
9 x SATA
1 x Floppy
4 x PCI-E
Please note:

This unique power supplier exclusively compatible with some of Antec's most cutting-edge Gamer and Performance One enclosures, including the Twelve Hundred, P183 and P193

Compatible with Core i7

Advanced hybrid cable management to improve airflow and reduce clutter

Unique power supply construction compatible with many new Antec cases

Dual PCB layout optimizes cooling efficiency and allows for heavy duty components

Quiet 120mm PWM cooling fan

Safety protection circuitry prevents damage resulting from short circuits, over current and over voltage

Dimensions & Weight

4.7" x 6.9" x 7.9"

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 Antec CP-850

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  • Patricia H.
  • 12/28/2012 2:29:53 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsNot Compatible

Pros: Great product, but was compatible.

Cons: None

Other Thoughts: Read the description carefully or else you'll be returning it like me.

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

  • Michael D.
  • 11/16/2012 5:58:37 PM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsGreat PS

Pros: Does what it should. Semi modular would be more accurate. Fits my P183 perfectly.

Cons: None so far.

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

  • Mr. c.
  • 6/3/2012 9:50:14 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year

5 out of 5 eggsExcellent power to cost ratio!

Pros: 4 stable 22-25amp 12 volt rails, semi-modular eliminates unneeded cable clutter. Massive capacitors and pfc coil with dual pcb's enables this puppy to pump the power out cool and quiet. Great noise and ripple suppression.
This a Great power supply for modern SandyBridge cpu's and the new 3rd generation IvyBridge cpu's, with plenty of power for 2 power hungry Video cards and multiple hard and optical drives.

Cons: Not a con in my book as I have P193v3 case, but it will not fit most cases without modification.

Other Thoughts: I don't agree with some reviewer's here taking eggs off for it being a non-standard size and others inability to plug the modular cables in the right way.
If you are having problems with which way the cables go in, it's simple...look at the plug, it has a retainer clip on on one side, just match it up with the indent on the power supply. If you can't grasp this simple step,(in my opinion) you have no business taking on the job of building your own computer.

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

  • Keven H.
  • 5/17/2012 4:26:37 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsLots of Power

Pros: My son works with graphics design. I bought this power supply intending to upgrade his computer at a later date to SLI. I've had good success with Antec products and this looked to have plenty of power on the 12V leads for a future SLI upgrade. Due to problems with a new Intel motherboard I haven't been able to use this much yet.

Cons: I completely overlooked the fact that this power supply is much larger than most and will apparently only fit in one of three Antec cases. (My fault as Newegg mentioned this in the Overview page.)

Other Thoughts: Found it would cost me nearly $40 in restocking and postage to RMA the power supply. So eventually decided to buy a $160 Antec case instead. I would have preferred using the case I originally bought, but will now have to save that for some other purpose.

Did you find this review helpful? Yes No

  • Matthew C.
  • 5/10/2012 3:15:11 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsGreat.

Pros: Great product
Plenty of power.
Runs cool and quiet.

Cons: Not truly fully modular but still works great.
Big. but it fits like a glove in an Antec 1200.

Other Thoughts: There's some people on here that complain about it not fitting... well.. it's designed specifically for 3 specific cases.. if you don't have one of Antec's 1200/P183/P193 cases, then don't get it, 'nuff said.

As for the other rainman who "plugged things in backward", well.. that's truly sad, this was used in one of my first builds and it's pretty obvious which way they go, I mean obvious as in it only goes in one way, I mean only goes in one way by you can't possibly connect them backward short of powerflexing that bad boy in there. In short, if you own one of the 1200/P183/P193 cases get this. And if you have trouble putting the triangle in the triangle shaped hole. or the square in the square shaped hole... have someone else connect your power supply.

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

  • Adam C.
  • 4/30/2012 10:14:27 AM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsPowerful and Quiet

Pros: Very powerful and quiet. I replaced my whining old power supply with this unit and have not run into issues yet.

Cons: I use an older case, and I had to hack-saw some space as well as snip a bit.

Did you find this review helpful? Yes No

  • Larry S.
  • 4/19/2012 12:09:54 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

1 out of 5 eggsDied badly

Pros: Very flexible

Cons: Died taking 6 disk drives with it due to overvoltage supply

Manufacturer Response:

Hi LIS042738,

Please write us at and we'll discuss options for replacing your CP-850 under warranty. We apologize for the malfunction and we'll have you taken care of right away.

Antec Customer Support

Did you find this review helpful? Yes No

  • Ryan M.
  • 3/26/2012 12:02:32 PM
  • Tech Level: Average
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsWorks

Pros: Modular. Fits into my specific Antec case (beware -- does not fit most non-Antec cases). Runs pretty cool.

Cons: None. Still kicking after almost a yaer

Other Thoughts: Some parts are not modular. Leads to a few extra wires stashed at the bottom of my case.

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

  • Anonymous
  • 3/19/2012 2:01:02 PM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year

5 out of 5 eggsGreat PSU

Pros: This is a great PSU. I got it 2 yrs ago after my previous psu died and went to PSU heaven.

This psu is quiet and does what it is advertised it does.

Cons: None

Other Thoughts: if you're in need of a new PSU, You can't go wrong with this one.

Did you find this review helpful? Yes No

  • Rob L.
  • 3/12/2012 6:46:56 AM
  • Tech Level: Average
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggs

Pros: Bought to go in Antec DF-85 and fits perfectly, turns on, powers system. AKA does what its supposed to do. I didnt have any of the issues with confusing which way to plug things in but that is probably more because I had read some of the others comments and was therefore better prepared.

Cons: It is really difficult to tell what plugs go were if the power supply is installed. Luckily I did the plugs before I installed the supply but if I have to add any later I foresee unistalling it to be able to see the plugs.

Did you find this review helpful? Yes No

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