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Antec NEO ECO 400C 400W Continuous Power ATX12V 2.3 / EPS12V 80 PLUS Certified Active PFC Power Supply

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  • ATX12V 2.3 / EPS12V
  • 80 PLUS Certified
  • 100 - 240 V 50/60 Hz
  • +3.3V@20A, +5V@20A, +12V@30A, -12V@0.8A, +5VSB@2.5A

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

The NEO ECO 400C power supply combines the most desired features in PC power supplies with unprecedented efficiency in design. The Antec NEO ECO 400C power supply power supply features 80 PLUS certification, saving energy and your money. It also generates less heat, and enhances cooling with a super-silent 120mm fan. The Active PFC circuitry further reduces impact on the power infrastructure resulting in cooler, quieter, and more environmentally friendly power.

The Antec NEO ECO 400C power supply’s Universal Input capability together with ATX12V and EPS12V compliance enables you to use it in a variety of situations, and almost everywhere, without worrying about input voltages. Dedicated power circuitry, industrial grade protection circuitry, and Active PFC deliver safe, reliable output.

The presence of one Main connector (20 + 4 pin), one 12V (4+4-pin), four Molex, five SATA, one Floppy, and one PCI-E (6-pin) connectors are more than enough for all your components. The single +12V output circuits provide maximum stable power for the CPU independently of the other peripherals. Bring new power to your system with this remarkable supply!

  • newegg ATX12V and EPS12V Compatible Compatible with the ATX12V and EPS12V standards, the Antec NEO ECO 400C power supply provides maximum power stability to drive the processors as well as other components for desktop and server computer systems.
  • newegg 400W Continuous Power A continuous power of 400W delivers safe, reliable output for high-end gaming computer systems. A strong +12V single rail ensures the maximum provision of 12V power to energy-hungry components such as CPU and VGA card, minimizing the likelihood of overload shut down.
  • newegg 80 Plus Certified The 80 PLUS certified power supply provides high power efficiency of over 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 Quiet Operation The silent 120mm dual-ball-bearing fan delivers high efficient cooling and ensures quiet operation through fan speed adjustments in response to loading conditions.

Learn more about the Antec NEO ECO 400C

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 3 years
  • Limited Warranty period (labor): 3 years
  • Read full details
  • Return Policies
    • Return for refund within: 30 days
    • Return for replacement within: 30 days
  • This item is covered by Newegg.com's Standard Return Policy.
Ownership: more than 1 year
Verified Owner
5/ 5
Nice for low power computer

Pros: Bought two of these - one used for an old computer replacement PSU and the other in a new build with low power components - after a year both are still running perfectly.

Cons: They don't seem to be making PSUs this small any more - even though this is plenty of power for low power / minimal builds

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Ownership: more than 1 year
Verified Owner
5/ 5
Good reliable power supply

Pros: Great reliable power supply for a decent price. Quiet and seems to be conscious of my power bill.

Cons: None.

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Ownership: 1 month to 1 year
Verified Owner
5/ 5
Will work well in any basic PC!

Pros: -80 Plus certified
-Well priced
-Antec quality
-Ordered two, neither have failed
-I assume good build quality (read below)

Cons: None

Other Thoughts: I ordered two of these within this past year for my mom's PC and for my friend's PC and they are still running well. Granted, I'm not a big power supply guru, so I don't know what good quality is vs. bad quality, but these definitely seemed pretty durable and on the heavier side. I would recommend one!

Pairing them with:
Intel Pentium G2020 2.9 GHz (both PCs)
4 GB DDR-1333 RAM (both)
AMD Radeon HD 6450 (mom's PC) / AMD Radeon HD 7770 (friend's entry level gaming PC)
Intel 320 60 GB SSD (mom's PC) / Western Digital 320 GB 7200 RPM hard drive (friend's PC)

Both of these setups have been running for 6 months-a year and neither have failed!

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Ownership: 1 month to 1 year
Verified Owner
5/ 5
Solid

Pros: It's rock solid, it has some serious amperage on the 12v rail.

Cons: It's rock solid?

Other Thoughts: It's rock solid

3 out of 3 people found this review helpful. Did you?
Ownership: 1 month to 1 year
Verified Owner
4/ 5

Pros: Silent.

Cables are bundled and about the right length.

Cons: More SATA connectors would be nice.

Ugly shade of green.

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Ownership: more than 1 year
Verified Owner
4/ 5
HTPC User

Pros: No issues running a HTPC in my living room. When first installed in my system this thing operated almost silently.

Cons: After about 8 months of use (almost continually) the fan became audible from across the room even while watching an action movie.

Other Thoughts: I was hoping to get a longer life out of the PSU but it wasn't in the cards. I assume I may have just gotten a bad fan. Have now spent the extra money for a fanless PSU for the HTPC. I will hold on to this as a spare for my file server.

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Ownership: 1 month to 1 year
Verified Owner
5/ 5
Good power choice

Pros: Moved up to Ivy Bridge from Pentium Dual Core last summer in my old Sonata case. The new 1155 Gigabyte MB I was set on featured a 8-pin(4+4) CPU power connector. I didn't want to just use the 4-pin from my old, but still kicking SU-380, or an adapter, so I shopped around.
This PSU had everything I wanted: good price, active PFC, 8-pin CPU power, double ball-bearing fan, and quality name.

Cons: None.

Other Thoughts: It runs cool and has been quietly working nonstop (minus Hurricane Isaac) for 6+ months without issue. Fully sleeved cables look great and made tucking excess neatly away easy.
I've been very pleased with this purchase.

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Ownership: 1 week to 1 month
Verified Owner
5/ 5
Good Sub $50 PSU

Pros: 80 plus certified, 30 amps on the 12V rail, 120mm fan, sleeved cables, short (will fit in a cramped htpc or sff case), quiet

Cons: not modular (not really a con at this price)

Other Thoughts: For a good sub $50 PSU, your best options are the Antec Neo Eco 400W, the Antec Earthwatts 380D, or the Corsair CX430V2. Just go with whichever is cheapest at the time of purchase. They're all good and basically on par with each other.

1 out of 1 people found this review helpful. Did you?
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  • Used - Like New : This means that the product has been opened, possibly used but is in perfect condition with no signs of cosmetic or functional defect. Product may includes warranty, and accessories found with the original product. Product may or may not be in the original packaging. Returned items with minor packaging defects fall under this category.
  • Used - Very Good : This means that the product has been opened, may show slight signs of use and cosmetic blemish, and may be missing minor accessories, but remain in excellent condition. Product does not come with warranty unless stated otherwise in product description.
  • Used - Good : This means that the product has been used, may show clear signs of use and may be missing minor accessories, but remain in good condition. Product does not come with warranty unless stated otherwise in product description.
  • Used - Acceptable : This means that the product shows clear signs of use, cosmetic defect, and may be missing minor accessories and manual, but remain in working condition. Product does not come with warranty unless stated otherwise in product description. Functionality issues beyond signs of use should be disclosed in product description.
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