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Reviews Home > Computers & Tablets Reviews > Computer Cards & Components Reviews > Computer Power Supplies Reviews

Customer Reviews for Dynex™ 400-Watt ATX CPU Power Supply

Dynex™ 400-Watt ATX CPU Power Supply

Model: DX-400WPS
SKU: 8311052
UPC: 600603112232
Keep your important computer components running with this 400-watt ATX power supply that features a 6-pin PCI Express connector.
Average Customer Rating:
4.277 out of 5
4.3
 out of 
5
 (65 Reviews) 65
Open Ratings Snapshot
Rating Snapshot 65 reviews
5 stars
43
4 stars
11
3 stars
3
2 stars
2
1 star
6
85% of customers would recommend this product to a friend 
(
55 out of 65
)
Customer Questions & Answers:
3 Questions | 2 Answers
Customer Reviews for Dynex™ 400-Watt ATX CPU Power Supply
Review 1 for Dynex™ 400-Watt ATX CPU Power Supply

Works fine!

Customer Rating
3.0 out of 5
3.0
Posted by: HoochieCoochie
from San Antonio, TX
on 04/02/2012
Value for Price
3.0 out of 5
3.0
Compatibility
4.0 out of 5
4.0
Features
3.0 out of 5
3.0
Ease of Installation
3.0 out of 5
3.0
What's great about it: quiet
The troubleshooting of my computer down to the power supply was rather quick. The technicians worked on it while I was in the store but I had to leave and pick it up later. The computer works fine. The only negative thing I have to say is that someone on the geek squad broke a hinge on a front panel on my computer that hides my outlets. There was no compensation or we will try to replace that. They did try to fix it but realized they couldn't. Computers brought in for repairs should leave in the same condition plus the repair as when they are brought in.
I would recommend this to a friend!
Build or modify your own PC:No
Level of Expertise:Newbie
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Review 2 for Dynex™ 400-Watt ATX CPU Power Supply

Great replacement power supply

Customer Rating
5.0 out of 5
5.0
Posted by: PappyD
from Pittsburgh, PA
on 02/15/2012
Value for Price
5.0 out of 5
5.0
Compatibility
5.0 out of 5
5.0
Features
5.0 out of 5
5.0
Ease of Installation
4.0 out of 5
4.0
What's great about it: ease of installation
What's not so great: bulkiness of all the wires
I had never replaced a power supply before and this one was recommended to me by the Geek Squad. I bought it and was able to install it into one of my computers with no problem. I simply set the computer on its side and as I disconnected each item from the old power supply I connected the item to the new power supply. It was very easy to install and would highly recommend this product to anyone to repair their computers.
I would recommend this to a friend!
Build or modify your own PC:Yes
Level of Expertise:Average
Primary reason for building/modifying PC:Upgrader
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Review 3 for Dynex™ 400-Watt ATX CPU Power Supply

Great replacement power supply

Customer Rating
5.0 out of 5
5.0
Posted by: Kubota
from Greenwood, AR
on 02/04/2012
Value for Price
5.0 out of 5
5.0
Compatibility
5.0 out of 5
5.0
Features
5.0 out of 5
5.0
Ease of Installation
5.0 out of 5
5.0
What's great about it: Available locally and exact fit with all connectors
What's not so great: Nothing so far
This power supply is a perfect replacement for the 300W LiteOn PS-5301-08HA (HP Part #5188-2625). It has all the connectors that the original has plus a few additional that the original doesn't. It's an exact fit in my HP Pavilion Media Center m8067c computer. The fan in the original power supply froze and something shorted out inside the power supply. Replaced soldered-in fuse, but short remained. I found serveral replacement power supplies on line, but this one from my local Best Buy fits this bill.
I would recommend this to a friend!
Build or modify your own PC:Yes
Level of Expertise:Average
Primary reason for building/modifying PC:Upgrader
+1point
1out of 1found this review helpful.
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Review 4 for Dynex™ 400-Watt ATX CPU Power Supply

Reliable and cost effective

Customer Rating
5.0 out of 5
5.0
Posted by: CompStudent
from Berea, Ohio
on 01/27/2012
Value for Price
5.0 out of 5
5.0
Compatibility
5.0 out of 5
5.0
Features
5.0 out of 5
5.0
Ease of Installation
5.0 out of 5
5.0
What's great about it: nice item for the price
It was a easy fix to a power supply problem on a PC. Easy install and good quality item. It's 400W was a nice boost
I would recommend this to a friend!
Build or modify your own PC:Yes
Level of Expertise:Average
Primary reason for building/modifying PC:Upgrader
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Review 5 for Dynex™ 400-Watt ATX CPU Power Supply

Powersupply

Customer Rating
5.0 out of 5
5.0
Posted by: Giannis
from Park Ridge
on 01/25/2012
What's great about it: It assembled in the original mounting spot.
What's not so great: nothing
The product is very good, it installed on the original cut out W/out any modifications, the power cables were just wright. It works very good so far.
I would recommend this to a friend!
Build or modify your own PC:Yes
Level of Expertise:Average
Primary reason for building/modifying PC:Upgrader
0points
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Review 6 for Dynex™ 400-Watt ATX CPU Power Supply

Worked well for as long as it worked.

Customer Rating
3.0 out of 5
3.0
Posted by: DJGray
from WA State
on 01/21/2012
Value for Price
3.0 out of 5
3.0
Compatibility
5.0 out of 5
5.0
Features
5.0 out of 5
5.0
Ease of Installation
4.0 out of 5
4.0
What's great about it: Attractive, easy to install.
What's not so great: It failed after six months. Overheated.
Appears well constructed. Attractive, wrapped cables. However, six months in (this morning) it overheated and failed. I won't be buying a Dynex Power Supply again.
No, I would not recommend this to a friend.
Build or modify your own PC:Yes
Level of Expertise:Expert
Primary reason for building/modifying PC:Hobbiest
+1point
1out of 1found this review helpful.
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Review 7 for Dynex™ 400-Watt ATX CPU Power Supply

Great fit

Customer Rating
5.0 out of 5
5.0
Posted by: gvette1
on 01/16/2012
Value for Price
5.0 out of 5
5.0
Compatibility
5.0 out of 5
5.0
Features
5.0 out of 5
5.0
Ease of Installation
5.0 out of 5
5.0
Very well built and no hassle instalation.Easy pick up at store
I would recommend this to a friend!
Build or modify your own PC:Yes
Level of Expertise:Expert
Primary reason for building/modifying PC:Upgrader
0points
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Review 8 for Dynex™ 400-Watt ATX CPU Power Supply

Very pleased with the product.

Customer Rating
5.0 out of 5
5.0
Posted by: Kaffa
from Ohio
on 01/11/2012
Value for Price
5.0 out of 5
5.0
Compatibility
4.0 out of 5
4.0
Features
4.0 out of 5
4.0
Ease of Installation
5.0 out of 5
5.0
What's great about it: Ease of use and installation.
Easy to install and does exactly what it's meant to do. No problems at all.
I would recommend this to a friend!
Build or modify your own PC:No
Level of Expertise:Newbie
Primary reason for building/modifying PC:Multimedia (music, movies, photos)
0points
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Review 9 for Dynex™ 400-Watt ATX CPU Power Supply

Great Power Supply!

Customer Rating
5.0 out of 5
5.0
Posted by: Moviegal76
from Davenport, FL
on 01/07/2012
Value for Price
4.0 out of 5
4.0
Compatibility
5.0 out of 5
5.0
Features
5.0 out of 5
5.0
Ease of Installation
5.0 out of 5
5.0
What's great about it: Easy to install, quiet fan.
What's not so great: Could be a little cheaper.
Ok...so my power supply died after almost 5 years of continuous use so being that I need my desktop for everyday use (school,work) I needed a power supply and fast. Not wanting to wait for a UPS delivery I checked Best Buy, reserved it online for in store pick up and it was installed in minutes after arriving at home. My only gripe is that it could have been maybe a little bit cheaper...but that's what I get for wanting it right away.
I would recommend this to a friend!
Build or modify your own PC:Yes
Level of Expertise:Average
Primary reason for building/modifying PC:Gaming
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Review 10 for Dynex™ 400-Watt ATX CPU Power Supply

Good quality and price

Customer Rating
5.0 out of 5
5.0
Posted by: rattleshacksnake
from Louisiana
on 01/07/2012
Value for Price
5.0 out of 5
5.0
Compatibility
5.0 out of 5
5.0
Features
5.0 out of 5
5.0
Ease of Installation
5.0 out of 5
5.0
What's great about it: It works really good.
What's not so great: nothing
This item really works good. It helps keep my computer cool.
I would recommend this to a friend!
Build or modify your own PC:Yes
Level of Expertise:Average
Primary reason for building/modifying PC:Upgrader
0points
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Review 11 for Dynex™ 400-Watt ATX CPU Power Supply

Good replacement Power Supply

Customer Rating
5.0 out of 5
5.0
Posted by: compsci1550
from Maryland
on 01/07/2012
Value for Price
5.0 out of 5
5.0
Compatibility
5.0 out of 5
5.0
Features
5.0 out of 5
5.0
Ease of Installation
5.0 out of 5
5.0
What's great about it: Great basic replacement power supply for basic needs
What's not so great: Not a power supply for high end users for gaming or high def .
The original power supply for my computer went and I was satisfied with this replacement. As with all things, they do not last forever, so this is the second power supply replacement in about three years.
I would recommend this to a friend!
Build or modify your own PC:Yes
Level of Expertise:Average
Primary reason for building/modifying PC:Hobbiest
0points
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Review 12 for Dynex™ 400-Watt ATX CPU Power Supply

Great power supply!

Customer Rating
5.0 out of 5
5.0
Posted by: WoWn00b
from Washington, DC
on 11/03/2011
Value for Price
5.0 out of 5
5.0
Compatibility
5.0 out of 5
5.0
Features
5.0 out of 5
5.0
Ease of Installation
5.0 out of 5
5.0
What's great about it: Super Easy to Install, Super Quiet, Super Cool
my old power supply died on me. My first thought was that it would be a pain in the rear. I didnt have much money to buy a new one and this one fit that bill. I was able to install it in less than 10 minutes and I dont regret it. It is a LOT quieter than my old one which really helps since I need my computer to be quiet. I also love the fact that it keeps my computer a lot cooler! I have a lot of electronics near my computer and before my computer would heat up the area, with this one, its a lot cooler and makes me think that I should have replaced my old one with this one sooner!
I would recommend this to a friend!
Build or modify your own PC:Yes
Level of Expertise:Average
Primary reason for building/modifying PC:Gaming
+1point
1out of 1found this review helpful.
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Review 13 for Dynex™ 400-Watt ATX CPU Power Supply

Lasted only 6 months!

Customer Rating
1.0 out of 5
1.0
Posted by: anedd
from CO
on 10/16/2011
Value for Price
1.0 out of 5
1.0
Compatibility
3.0 out of 5
3.0
Features
1.0 out of 5
1.0
Ease of Installation
2.0 out of 5
2.0
What's great about it: Price
What's not so great: Longevity
This was a second replacement for my Dell. The size of this PS was a bit bigger, but I got it to fit. I thought it was a great value when I first bought it, but it's only been six months and I've already smelled it burning, so now the fan barely moves. I'm replacing this with a Cooler Master PS.
No, I would not recommend this to a friend.
Build or modify your own PC:Yes
Level of Expertise:Average
Primary reason for building/modifying PC:Upgrader
0points
1out of 2found this review helpful.
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Review 14 for Dynex™ 400-Watt ATX CPU Power Supply

Solid, yet affordable

Customer Rating
4.0 out of 5
4.0
Posted by: DarylD
from LA
on 09/08/2011
Value for Price
5.0 out of 5
5.0
Compatibility
4.0 out of 5
4.0
Features
3.0 out of 5
3.0
Ease of Installation
5.0 out of 5
5.0
A good power supply for the money! While I have used more expensive power supplies, this one served the purpose for which it was bought.
I would recommend this to a friend!
Build or modify your own PC:Yes
Level of Expertise:Average
Primary reason for building/modifying PC:Multimedia (music, movies, photos)
0points
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Review 15 for Dynex™ 400-Watt ATX CPU Power Supply

Perfect Replacement

Customer Rating
5.0 out of 5
5.0
Posted by: southeastNH
from Portsmouth, NH
on 08/31/2011
Value for Price
4.0 out of 5
4.0
Compatibility
5.0 out of 5
5.0
Features
5.0 out of 5
5.0
Ease of Installation
5.0 out of 5
5.0
What's great about it: Has all the right connectors, quiet, installed easily
What's not so great: none
The power supply in my 4yr old HP computer died. This power supply was purchased to replace the original 350watt supply. It is a little more powerfull than the original and has all the right connectors. It even has more SATA power connectors than the original PS I replaced. It installed easily and has worked flawlessly. The fan in this supply is as quiet as the original, maybe a little more quiet. I found cheaper supplies at other on-line sites, but this one was available the day I needed it. I bought it at Best Buy On Line and picked it up an hour later with in-store pick-up. Overall I am very satisfied.
I would recommend this to a friend!
Build or modify your own PC:Yes
Level of Expertise:Average
Primary reason for building/modifying PC:Upgrader
+3points
3out of 3found this review helpful.
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Review 16 for Dynex™ 400-Watt ATX CPU Power Supply

Deceptively overpriced for the quality

Customer Rating
1.0 out of 5
1.0
Posted by: Skylance
on 08/14/2011
What's great about it: The appearance
What's not so great: The price and the quality.
At its price, the Dynex 400W PSU appears to have a quality advantage over some of the economy line PSU's of the same power. It also has the convenience of purchase at retail stores. Upon opening the box, the cables seem well protected, and have a good aesthetic feel and appearance. However, this does not translate well into the internal components. Despite the packaging and the good reputation of Best Buy, this particular product fails to deliver as advertised.
While the price has decreased, the performance is still on par (or below) its peers in the economy line. This unit will work for entry level low-use, non-modified systems. If one is looking for "economy" I would recommend looking elsewhere. If one is looking for "quality", then I would steer them to Thermaltake, or Corsair for a more reliable product. It's unfortunate that the Best Buy reputation earns this sub-par component a price that misleads the consumer into believing that the quality is greater than it actually can deliver.
It is interesting to note that the 400W and 450W units have performed almost identically, despite the rating difference.
No, I would not recommend this to a friend.
 
Other Best Buy Products I Recommend
Thermaltake 600W TR2 ATX Power Supply
3.7 out of 5(12)
 
 
 
Corsair Builder Series 600-Watt ATX CPU Power Supply
5.0 out of 5(1)
 
 
 
 
 
Build or modify your own PC:Yes
Level of Expertise:Expert
Primary reason for building/modifying PC:Hobbiest
0points
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Review 17 for Dynex™ 400-Watt ATX CPU Power Supply

A++

Customer Rating
5.0 out of 5
5.0
Posted by: Anonymous
from Boise. ID
on 06/22/2011
Value for Price
5.0 out of 5
5.0
Compatibility
5.0 out of 5
5.0
Features
5.0 out of 5
5.0
Ease of Installation
5.0 out of 5
5.0
What's great about it: Price, ease of installation, compatablity.
What's not so great: It wasn't free.
Great PSU for the price. I upgraded from poopy onboard graphics to a Radeon 5450 and needed a bigger power supply. This baby went in smooth and fired right up. The cables are even wrapped in a cool black material that makes the inside of my case look clean. Great job.
I would recommend this to a friend!
Build or modify your own PC:Yes
Level of Expertise:Newbie
Primary reason for building/modifying PC:Gaming
+4points
4out of 4found this review helpful.
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Review 18 for Dynex™ 400-Watt ATX CPU Power Supply

Great PSU

Customer Rating
5.0 out of 5
5.0
Posted by: BatDealer
from New Mexico
on 03/18/2011
Value for Price
3.0 out of 5
3.0
Compatibility
5.0 out of 5
5.0
Features
4.0 out of 5
4.0
Ease of Installation
5.0 out of 5
5.0
What's great about it: Good upgrade to use better GPU's
What's not so great: Price difference online vs. in-store
My old Best Buy rig I got for school had an old PSU that wouldn't support PCI-E among other things so I was stuck using the onboard video, which was horrendous. Bought this today and installed it along with my Nvidia 9800GT and things are looking much better, literally. Although the price online and the price in-store was different, I am still satisfied with this PSU. For a 400 Watt that supports numerous Sata and 1 PCI-E you can't go wrong. Just not sure why the price in store was $59.99 when it shows online as an in-store pick-up option for $49.99.
I would recommend this to a friend!
Build or modify your own PC:Yes
Level of Expertise:Expert
Primary reason for building/modifying PC:Gaming
+1point
1out of 1found this review helpful.
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Review 19 for Dynex™ 400-Watt ATX CPU Power Supply

Great replacement power supply

Customer Rating
5.0 out of 5
5.0
Posted by: PCnoviceGSO
from Greensboro, NC
on 01/28/2011
Value for Price
5.0 out of 5
5.0
Compatibility
5.0 out of 5
5.0
Features
5.0 out of 5
5.0
Ease of Installation
4.0 out of 5
4.0
What's great about it: Good value
Had to replace a failed power supply after a power outage on Christmas day. Had the old one out and the new one installed in 30 minutes. It has been working great ever since. It is a lot quieter than I thought it would be.
I would recommend this to a friend!
Build or modify your own PC:Yes
Level of Expertise:Average
Primary reason for building/modifying PC:Upgrader
+1point
1out of 1found this review helpful.
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Review 20 for Dynex™ 400-Watt ATX CPU Power Supply

Cheap, Reliable, Easy Install

Customer Rating
5.0 out of 5
5.0
Posted by: BOLTS4BREKFAST
from Warner Robins, GA
on 01/19/2011
Value for Price
5.0 out of 5
5.0
Compatibility
5.0 out of 5
5.0
Features
5.0 out of 5
5.0
Ease of Installation
5.0 out of 5
5.0
What's great about it: Good price. Easy install.
What's not so great: Not modular? - but hey.. you get what you pay for!
Power supply was easy to install. Surprised that a power supply of this size (400W) had a 6-pin PCI-E power connector... Good product for the price.
I would recommend this to a friend!
Build or modify your own PC:Yes
Level of Expertise:Expert
Primary reason for building/modifying PC:Gaming
0points
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