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

Rosewill Stallion Series RD400-2-SB - power supply - 400 Watt
alaScore 83

85 reviews

Mar, 2015

alaTest has collected and analyzed 85 reviews of Rosewill Stallion Series RD400-2-SB - power supply - 400 Watt. The average rating for this product is 4.3/5, compared to an average rating of 4.1/5 for other Desktops for all reviews. People really like the size and design. The reliability and usability are also mentioned favorably.

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 83/100 = Very good quality.

Review analysis

(Based on 85 reviews)

User Reviews  

Showing 85 review(s)

Expert Reviews User Reviews
Showing 1 - 10 of 85 Show Reviews: in English

Consumer review by: T (

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 by: N/A (

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 by: N/A (

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 by: N/A (

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 by: N/A (

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

Consumer review by: BlackRice (

quiet pony


hope rebate comes through. with newegg and rosewill, it usually does

needed a power supply and this one was on sale. has all the right connections for current motherboards ; protected braided wiring. good looking black color. quiet... did I say quiet. runs cool. solid fit and finish

no hamster included

Sep, 2014

Consumer review by: N/A (

Rosewill Stallion Series RD400-2SB 400w atx 12v Power Supply


Seems to be working fairly well, will update if anything changes

Installed fairly quickly ; Powered up instantly

No mounting screws included but I had some already, not gonna knock an egg off

May, 2014

Consumer review by: N/A (

Rosewill 400w psu


DO NOT GET THIS FOR A GAMING RIG. I was dumb to get it for what i needed. i recomend getting 80+ bronze atleast for gaming.

there arent many but the only ones i can think of are its cheap and they wrapped the cables

well, i had this PSU for less than a day it was in my system for about 3-4 hours and i was doing some very very light gaming (minecraft) and it just shutoff and wont boot my system i even let it sit over night and still nothing

Dec, 2013

Consumer review by: N/A (

works good


mine is driving a g645, 8gb RAM, 500gb HD, and a HD 7770 very easily.

easy to install ... cables are manageable ... literally took 10 mins to take old one out and plug in new one

was missing mounting screws but I had extras laying around

Oct, 2013

Consumer review by: Shinji Ikari (

Rosewill Stallion 400 Watt PSU


Newegg's customer service is top notch at least. Stay away from this power supply, because you will have the same problems as I had. The price tag listed just isn't worth it as there are much better power supplies out there and at least you'll get to...


I'm on my 2nd model and it doesn't work whatsoever. I was getting 7.92v on dual 12v rails which is unacceptable on both PSU's and the cost of $14.20 to ship this product back was further killing the supposed value of this PSU

Jul, 2013

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