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Pros & Cons
pros
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pros
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Modular Design
Customers are highly satisfied with the fully modular design of the power supply, which allows for clean builds and improved airflow through careful cable management. The excess cables may require some effort to set up but are worth it for those seeking a clutter-free case. Some customers also appreciate the attractive finish and all-metal shell. However, a few have noted minor issues such as a funny smell upon opening and difficulty removing a clear sticker on the top of the unit.
Single Rail Voltage
Customers have mostly positive opinions about the single rail voltage feature of this power supply, with many praising its high performance and efficiency. Some users also appreciate the fully modular design and quiet operation. However, a small group of customers have reported issues with the +5V Standby output.
Build Quality
Customers highly praise the build quality of the XFX ATX12V/EPS12V 550W Power Supply P1550BBEFX, with many noting it's made by Seasonic and features high-quality components. Some customers have had no issues with the unit for over a month, while others appreciate its quiet operation and smart fan option. The power supply is also fully modular and comes with sufficient power and ample connections. However, some customers mention that it could be shorter in size for its wattage rating. Overall, customers are very satisfied with the product'
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Quiet Operation
Customers generally praise the quiet operation of the XFX ATX12V/EPS12V 550W Power Supply P1550BBEFX, with some mentioning its hybrid mode that automatically turns off the fan during low power consumption contributing to the silence. However, a small group of customers have reported issues with coil whine and noise from the unit.

Highlights
Quality
Works perfectly, and makes no sound, the cables are great all black colored and long enough for any thing
The modular aspect allows for a good, complete, clean build.
Operates flawlessly and doesn't contribute to "coil whine".
As i build high end computers i have tried dozens of psus and they really don't measure up when compared.
Price
Add in the low price for a fully modular gold rated unit, along with their five-year warranty, and you've got one hell of a for... Read More
This coupled with the $20 rebate offer was unbeatable by any other psu.
If you find it for that price buy it.
If you can afford the price, you wont be disappointed.
Shipping
Just perfect and very fast delivery too.
Edit: my replacement form amazon has arrived, and i have had no problems with it.
Packaging/appearance
- fantastic packaging, foam insulated and a nice box.
I am happy about everything including the packaging with this power supply.
The unboxing was more like opening a new high-end phone.
Cons:- smelled funny when i first opened it up, this is common with psu's- there was a clear sticker on the top protecting the ... Read More
Competitiveness
Not the fastest but i'm happy they replaced it with a brand new one.
First of all, this is an amazing deal for a psu which is rated tier one, has an 80+ gold rating, is modular, cranks out 750w, a... Read More
Having only a few places that sell the unit is bad for competition and prices as far as the consumer is concerned.
If you are buying the pro series black edition, you are basically buying a rebranded seasonic psu.
Overview
- How are reviewers describing this item?
great, modular, quality, black and quiet. - Our engine has profiled the reviewer patterns and has determined that there is minimal deception involved.
- Our engine has detected that Amazon has altered, modified or removed reviews from this listing. We approximate total reviews altered up to 120.
- Our engine has discovered that over 80% high quality reviews are present.
- This product had a total of 255 reviews as of our last analysis date on Feb 2 2025.
Helpful InsightsBETA
Posted by a reviewer on Amazon
There are more cables than you could possibly need
Posted by a reviewer on Amazon
There are two cpu cables so if you have a board that can use two cpu s this would work
Posted by a reviewer on Amazon
I own an antecc power supply thats quiet noisy especially under load
Posted by a reviewer on Amazon
I cant even tell when this one is on or not
Posted by a reviewer on Amazon
Which may be due to the hybrid fan control
Posted by a reviewer on Amazon
Hybrid fan control will adapt the fan speed to the temperatures but its too quiet for me to tell whether or not its working
Posted by a reviewer on Amazon
Im unsure if this is good or bad
Posted by a reviewer on Amazon
However i have nothing bad to say about this product
Review Count History
Price History
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