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Corsair Memory  Corsair Memory News Room

CORSAIR CMPSU-400CX 400W ATX12V V2.2 80 PLUS Certified Compatible with Core i7 Power Supply - Retail

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Original Price: $79.99
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$69.99

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Manufacturer Warranty

Beyond any applicable Newegg return policy, this item is warranted independently by the product's Manufacturer. Below is a summary provided for convenience only and may not be accurate or current. Use this link for full details.

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

Manufacturer Contact Info

Return Policies

This item is covered by Newegg.ca's Standard Return Policy.

  • Return for refund within: 30 days
  • Return for replacement within: 30 days
  • Restocking Fee: Yes
OverviewCustomer ReviewSpecificationsProduct Tour
The 400CX PSU from Corsair delivers premium features on a standard budget. This 400W PSU supports the latest ATX12V v2.2 standards. The unit is 80 Plus certified and has a 99% Active Power Factor Correction to ensure maximum efficiency.

The cables are extra long to work in the largest tower. They are fully sleeved for easy routing and bundling. There is a PCIe power connector so you can use one of today’s high powered video cards. There are also 6xSATA and 6xMolex connectors so you can connect multiple drives and peripherals.

Keeping it all cool is a variable speed 120mm fan. Air is vented through the hexagon mesh back panel. The universal input accepts voltages from 90-264 so you no longer have to worry if the switch was in the right position.

Review Summary (read more reviews, write a review)

5
newegg
84%
4
newegg
6%
3
newegg
3%
2
newegg
2%
1
newegg
5%
Product Rating:
Total Reviews: 386

Corsair 400W PSU

white Reviewed By: Sergei on 11/17/2008
Rating + 5
Tech Level Tech Level: somewhat high - Ownership: 1 day to 1 week
Pros: Unlike many other power supplies, this has a single 30 amp 12v Rail which eliminates any load balancing over different rails and will power a lot of components other PSUs (even with higher wattage ratings, Thermaltake 430W is a perfect example) will not. The efficiency, quality and price of Corsair PSUs is hard to beat. The heat and noise generated from this PSU is minimal due to high efficiency.
Cons: None.
Other Thoughts: This power supply carries a 3 year warranty. Just as a comparison, the other 7 PSUs Corsair carries come with a 5 year warranty. Also, after Corsair has revamped their website, the noise and efficiency charts that they had listed for power supplies were removed. I couldn't check the noise charts, but figured that it couldn't be any louder than a Corsair 450W that I purchased, and I was right. It's the quietest actively cooled part in the whole computer.
92 out of 95 people found this review helpful. Did you? Yes No

Seems to be working fine...

white Reviewed By: corky dorkelson on 11/22/2008
Rating + 5
Tech Level Tech Level: somewhat high - Ownership: 1 day to 1 week
This user purchased this item from Newegg
Pros: PRICE, high amperage on 12V rail, sleeved, 80+ certified, 120mm fan, corsair quality! This is one H**L of a PSU for the price.
Cons: None .
Other Thoughts: This PSU is the newest in the corsair lineup, and is also the cheapest. It is a high-quality, attractive, efficient PSU. It looks incredible. Voltage looked like this in BIOS. 12V was measured at 12.30v, the 3.3V line was reading 3.32v, and the 5V line measured 5.04V!!!! Accuracy at its finest. The fan is quiet, the sleeving is top-notch, and there are PLENTY of connectors everywhere. I am totally pleased with my purchase. Right now it is running an extremely overclocked E2180, 2 hard drives, 1 optical, and a 8800GS video card. I have been torture testing all day, and everything seems rock stable. The only thing that is concerning me is that the PSU is kicking out a fair amount of heat. Part of this is because the PSU fan is closer to the CPU than my case exhaust is, so the PSU is pulling heat off of the CPU. But the chassis of the PSU is barely above room temp, so everything seem in order. Great PSU, BUY IT!!!!
12 out of 12 people found this review helpful. Did you? Yes No

Quick Specs (view all30)

ModelCMPSU-400CX
TypeATX12V
Maximum Power301 - 400W
Fans1
Main Connector20+4Pin

Review Summary (read all 386 Reviews, write a review)

5
newegg
84%
4
newegg
6%
3
newegg
3%
2
newegg
2%
1
newegg
5%
Product Rating:
Total Reviews: 386

Great Power Supply

white Reviewed By: Elchevelle on 2/9/2010
Rating + 5
Tech Level Tech Level: somewhat high - Ownership: 1 week to 1 month
This user purchased this item from Newegg
Pros: Love the wiring. It's the first power supply that I have bought that you can easily bundle and hide unused wires.
Cons: Flat black but me likey.
Other Thoughts: Replaced a 550 watt with this and it out performs the old one. I liked this one so much, I bought a 2nd one a few days later.
Did you find this review helpful? Yes No

Best low-priced power supply

white Reviewed By: termie on 2/6/2010
Rating + 5
Tech Level Tech Level: somewhat high - Ownership: 1 week to 1 month
This user purchased this item from Newegg
Pros: I needed a quiet, high-quality power supply for an HTPC, and I knew Corsair had the best reviews in the business. I have not been disappointed.
Cons: For my HTPC, modular cables would be nice, as my case is practically overflowing with unused cables from the 400CX, but I chose this highly-reviewed unit over lesser units that offered modular cables because I wanted the best quality.
Other Thoughts: If you're not running high-end graphics cards or highly overclocked processors, I can't imagine why you'd get anything other than the 400CX. It's efficient, comes from the most reputable of manufacturers, and it's quiet. Much more expensive power supplies might be quieter, but in this price range, you can't beat the 400CX.
Did you find this review helpful? Yes No

Excellent power supply

white Reviewed By: mspurr on 2/5/2010
Rating + 5
Tech Level Tech Level: high - Ownership: less than 1 day
This user purchased this item from Newegg
Pros: Extremelly quiet! can't hear a thing from the fan. Very nice. Plenty of SATA power connecters and 6pin Video power connector is great to have.
Cons: the only thing i wish this had was removable cable so i can take out the molex ones. but that is hardly a con for the wonderful model
Other Thoughts: I've owned many corsair products over the years and this seems to be an excellent quality power supply. definitely the best i've owned ever. A++
Did you find this review helpful? Yes No
Model
Brand CORSAIR
Model CMPSU-400CX
Spec
Type ATX12V V2.2
Maximum Power 400W
Fans 120mm double ball-bearing fan
Main Connector 20+4Pin
+12V Rails Single
PCI-Express Connector 1 x 6-Pin
SATA Power Connector 6
Energy-Efficient 80 PLUS Certified
Output +3.3V@20A,+5V@20A,+12V@30A,-12V@0.8A,+5VSB@2.5A
MTBF >100,000 Hours
Features
Connectors 1 x Main connector (20+4Pin)
1 x 4-Pin/8-Pin EPS Connector
6 x Peripheral
6 x SATA
2 x Floppy
1 x PCI-E
Features High efficiency topology to ensure energy savings

99% Active Power Factor Correction provides clean and reliable
power to your system

Universal AC input 90~264V automatically scans and detects
the correct voltage. No more hassle of flipping that tiny red
switch

Dedicated single +12V rail offers maximum compatibility with
latest components

Over Current/Voltage/Power Protection, Under Voltage
Protection, and Short Circuit Protection provides maximum safety to critical system
Components

Extra long cables support full tower chassis

Compatible with Core i7
Manufacturer Warranty
Parts 3 years limited
Labor 3 years limited

Introduction

The 400CX PSU from Corsair delivers premium features on a standard budget. This 400W PSU supports the latest ATX12V v2.2 standards. The unit is 80 Plus certified and has a 99% Active Power Factor Correction to ensure maximum efficiency.

The cables are extra long to work in the largest tower. They are fully sleeved for easy routing and bundling. There is a PCIe power connector so you can use one of today’s high powered video cards. There are also 6xSATA and 6xMolex connectors so you can connect multiple drives and peripherals.

Keeping it all cool is a variable speed 120mm fan. Air is vented through the hexagon mesh back panel. The universal input accepts voltages from 90-264 so you no longer have to worry if the switch was in the right position.

Highlights

newegg ATX12V v2.2 Compatible
Compatible with the ATX12V v2.2 standard, the Corsair CMPSU-400CX power supply provides maximum power stability to drive the latest Intel and AMD processors as well as other system components.
newegg 400W Maximum Power
A maximum power of 400W delivers safe, reliable output for high-performance gaming computer systems.
newegg 80 PLUSCertified
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 Efficient Cooling
A 120mm double ball-bearing fan delivers high efficient cooling and ensures quiet operation through fan speed adjustments in response to loading conditions.

Photo Gallery

CORSAIR CMPSU-400CX 400W Compatible with Core i7 Power Supply - Retail
CORSAIR CMPSU-400CX 400W Compatible with Core i7 Power Supply - Retail CORSAIR CMPSU-400CX 400W Compatible with Core i7 Power Supply - Retail CORSAIR CMPSU-400CX 400W Compatible with Core i7 Power Supply - Retail CORSAIR CMPSU-400CX 400W Compatible with Core i7 Power Supply - Retail CORSAIR CMPSU-400CX 400W Compatible with Core i7 Power Supply - Retail

Quick Specs

BrandCORSAIR
+12V RailsSingle
Energy-Efficient80 PLUS Certified
Fans1
TypeATX12V
Maximum Power301 - 400W
MTBF>100,000 Hours
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