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Antec NeoPower 550 550W ATX12V SLI Certified CrossFire Ready Active PFC Power Supply

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  • ATX12V
  • 100 - 240 V

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

The Antec NeoPower 550 offers super quiet operation and high - up to 85% - efficiency thanks to Active PFC (power form correction). This efficiency factor, along with Antec's innovative "straight-through" airflow path allows the fan to run slower – and quieter – as it exhausts heat from the power supply. As a result, you'll save energy – and money – on your power bills each month. The power supply is backwards compatible with all ATX 12V systems while supporting ATX12V v2.2 and EPS12V systems.

With 550 watts of power at your command, dedicated power circuitry delivers a more reliable – and safer – output to your system's components with voltage feedback circuitry and tighter regulation for improved system stability. Maximum, stable power to your CPU is delivered via three +12V output circuits independently of the other components and dedicated power connector supplies energy to any PCI Express graphics card.

The NeoPower 550 is certified Nvidia SLI-ready. In order to reduce cable clutter, the advanced cable management system lets you use only the cables you need to power your system. All of this is backed by Antec's AQ5 5-year warranty.

  • newegg ATX12V and EPS12V Compatible Compatible with the ATX12V v2.2 and EPS12V standards, the Antec NeoPower 550 provides maximum power stability to drive the latest Intel and AMD processors as well as other components for desktop and server computer systems.
  • newegg 550W Maximum Power A maximum power of 550W delivers safe, reliable output for average gaming computer systems.
  • newegg Highly Efficient Providing up to 85% power efficiency, the Antec NeoPower 550 power supply saves energy and may even reduce your electric bill!
  • newegg Dual PCI-E Connectors With two 6-pin PCI-E connectors, the Antec NeoPower 550 is ideal for building up a SLI or CrossFire gaming system.
  • newegg Modular Cable Design The modular cable design allows use of only the cables you need resulting in improved internal airflow and reduced system clutter.
  • newegg NVIDIA SLI Certified The Antec NeoPower 550 power supply has gone through a series of rigorous NVIDIA SLI certification tests for maximum system stability when building NVIDIA SLI PCs.

Learn more about the Antec NeoPower 550

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.
1/ 5
no support 1/26/2017 10:43:24 AM

Pros: It's a power supply.

Cons: Antec cannot provide replacement cables. They say "sorry". I say "no more Antec for me".

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Anonymous
Ownership: more than 1 year
Verified Owner
5/ 5
6 Years ago, still going strong! 10/4/2016 11:59:22 AM

Pros: It works still after 6 years!
Price was very reasonable.
Ran lower end cards no problem

Cons: nothing, for the price you pay you are getting a good PSU.

Overall Review: I used this to run my old GT 220 card. It did a great job at doing so! It is still being used daily today (not in my main rig, but the public family computer). If on a budget I can whole heartily recommend this PSU

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Ownership: more than 1 year
Verified Owner
5/ 5
Great PS! 2/25/2013 9:59:36 AM

Pros: I've had this PS since 2008 and its still going strong!

Cons: It didn't prevent the fan seizing up on my video card due to dust. :(

Overall Review: From what I've researched, this PS should be able to handle a newer 600 series nVidia cards!

Did you find this review helpful?
Ownership: more than 1 year
Verified Owner
5/ 5
Great PSU 1/17/2013 5:29:40 PM

Pros: I bought this back in 2006 for my new desktop build, which I've up a upgraded three times, and is now a file server. It's been run 24/7 since I first installed it and hasn't caused any issues. It's powering a Phenom 9600 quad-core, Radeon HD6570 and nine hard drives.

Cons: Modular design makes a tight fit in the LianLi PC-V1000 with its air compartment bulkhead.

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Ownership: more than 1 year
Verified Owner
5/ 5
Great psu 12/27/2012 9:12:26 AM

Pros: Going on 3 years , no problems . USED ON A CROSSFORE ATI 6770 and AMD 1100T , now an FX8350 and still going stong . Reviews have said this psu puts out over 650 wattts , I beleive it . Never gets hot or makes noise . Semi modular so no messy cables . included cables are very good quality

Cons: none

Overall Review: Wish they still made this PSU I'd buy again . Great unit , runs cool and quiet

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Ownership: more than 1 year
Verified Owner
1/ 5
Totally died on me. 10/25/2012 2:11:19 AM

Pros: Low energy usage, fairly quiet. Worked well...while it lasted.

Cons: Died on me after a little over two years of ownership. I couldn't find the receipt, so I'm going to eat the cost of replacement. Just not reliable for me.

Overall Review: Try a brand with a higher rating? This power supply just disappointed me totally.

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Ownership: more than 1 year
Verified Owner
5/ 5
Great little PSU, I'm going to miss him 8/9/2012 11:56:12 AM

Pros: I've had this PSU for 5+ years, been through three upgrades.

Cons: The modular cables, while nice at first, caused me headaches as I would lose them.

Overall Review: It's over 5 years old now and just starting to randomly turn off the PC when the GPU starts drawing more power than normal usage. Replacing it with a 500w Rosewill.

Did you find this review helpful?
Ownership: more than 1 year
Verified Owner
2/ 5
Died after 2 uses 6/28/2011 10:08:07 AM

Pros: Modular. Worked, 2 times.

Cons: This was supposed to be in a build for a paying customer who stopped paying, and led to me keeping it. Finished paying for the rest of the parts, and it ran twice. Once to install windows, second time to restart and install drivers. From this point, it was to be sold to another. I tried to turn on for a third time, before selling. It didnt boot. It powered everything for 1-2 seconds, than shut off immeadiately. This would seem like overheating problem, but I found out that everything worked when either the RAM sticks were completely out, or the 4 pin CPU wire was unplugged, than everything would stay powered. I thought that there was a mobo problem, or maybe even CPU. I used a Power supply that was recently purchased for a friend, and it works completely fine. Still dont understand the complete issue with this power supply, but its clearly the issue. Disappointed, but it is my first failed power supply.

Overall Review: Im probably not going to get a refund/replacement because its "out of stock" and probably not getting more because its deactivated, which sucks, but the good part is that I did not pay for the power supply. The Power supply tester said the voltages were correct, but its clearly failed. Live and learn.

1 out of 2 people found this review helpful. Did you?
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