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Rosewill Stallion Series RD400-2-SB - power supply - 400 Watt

alaTest has collected and analyzed 90 reviews of Rosewill Stallion Series RD400-2-SB - power supply - 400 Watt. The average rating for this product is 4.2/5, compared to an average rating of 4.2/5 for other Desktops for all reviews. Reviewers really like the size and design. The reliability and usability are also appreciated.

price, usability, reliability, design, size

We analyzed user and expert ratings, product age and more factors. Compared to other Desktops the Rosewill Stallion Series RD400-2-SB - power supply - 400 Watt is awarded an overall alaScore™ of 81/100 = Very good quality.

Review analysis

(Based on 90 reviews)

User Reviews  

Showing 90 review(s)

Expert Reviews User Reviews


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Showing 1 - 10 of 90 Show Reviews: in English

Consumer review (

Cheap Junk


Failed so quickly (installed 6/3/15, failed 7/8/15), complete rubbish and no customer service from Rosewill other than a "sorry we can't do anything" email response. Tested in another machine and it 100% doesn't work. New PSU works fine in the machine...

Worked well for just over 5 weeks ; Cables are nice and long ; shipping speed is great

Lasted just over 5 weeks before burning out ; Cheap Chinese internals cause failure just after RMA period expires ; Next to zero customer service from Rosewill

Jul, 2015

Consumer review (

It works!


The device works the way it should


Jul, 2015

Consumer review (

Freezes - Must be hard reset often.


The device works the way it should


Jul, 2015

Consumer review (

Good so far


Understand what the power rating means. Just because it says 400 watts doesn't mean that you should be running it even close to that capacity. If you are going to be running a system that is power hungry this PS probably isn't what you need. Get...

Looks nice ; Seems to be well built ; Good cable length ; Nice wrapping on the cables ; Plenty of connectors (at least for my use) ; Quiet

None so far

May, 2015

Consumer review (

Rosewill 400 Watt PSU


Great Value Supply, Nice sleeving on the wiring

None, it has been on the job since purchased 24/7 11 months later still doing it's job

Apr, 2015

Consumer review (

DOA gift


After testing the power supply on two working motherboards with no results, I accepted that it was DOA. I'll be purchasing my next power supply from another brand.

Nice price and good size


Feb, 2015

Consumer review (

Rosewill RD400-2-SB


I use this on my work computer. Much better than the garbage that came installed on any of the hp or dells we have that keep going bad.

great price/performance


Jan, 2015

Consumer review (

Works Great


Plenty of power to run an AMD A8 7600 X4 CPU, MSI A78M-E45 Motherboard, Team Elite 16GB DDR3 1600MHz RAM and Crucial SSD.

Solid PSU, braided and sleeved cables, long 4/8-pin and 24-pin for harder to reach motherboard plugs, plenty of hook ups and quiet fan


Oct, 2014

Consumer review (

Good Purchase


This purchase was for a NAS build, works perfectly and is near silent. Actually has more connector than I need but thats no complaint.

Performs great ; near silent fan


Oct, 2014

Consumer review (

Great value, coil whine


Great psu on my end, does what I need it do, reasonably priced, powers my parents home office build splendidly. The coil whine is present though, maybe just bad luck. No problem though, but it would have been 5 eggs if the coil whine wasn't present at all

Looks pretty good with the chrome grill underneath and flat black, fits with plenty of builds ; Does what it's supposed to, holding strong, will update if something changes ; I previously never would have considered Rosewill concerning PSU's, but this...

Little, tiny bit of coil whine. Not even noticeable most of the time, but when you have your head on certain angles if is very present and very annoying. NO issue for me personally, but I'm sure others may factor this in more importantly or like to...

Sep, 2014

Product Specifications

Rosewill's vision is to become the leading brand in computer hardware and peripherals. Rosewill believes that excellence is a standard. By purchasing a Rosewill product you are choosing exceptional value, unrivaled customer service and top quality hardware. PRODUCT FEATURES: Supports ATX 12V v2.2 standard; Supports both Intel and AMD systems; Dual 12V rails provide independent reliable power; 120mm 2 ball-bearing fan with smart temperature sensor; 20+4 pin main connector for universal motherboard compatibility; Mesh sleeving on all cables for easier cable routing and better ventilation; Built-in inrush current, over temperature/current/voltage protection circuits; Safety and EMI approval: CSA, UL, TUV, FCC.

Dimensions & Weight



Product Type:Power supply
Subcategory (AG):Power supplies


Packaged Quantity:1
Product Line:Rosewill Stallion Series

Power Device

Form Factor (AG):Internal
Power Provided:400Watt
Power Supply Compatibility:PC/Server
Voltage Required:AC 115/230V

Service & Support

Type:3 years warranty