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⚡ Power your ambition with MSI MAG A550BN — efficiency and reliability in one sleek package.
The MSI MAG A550BN is a 550W ATX power supply unit featuring 80 Plus Bronze certification for up to 86% efficiency, a stable 12V single-rail design, and a DC-to-DC circuit for voltage stability. Equipped with a quiet 120mm fluid dynamic bearing fan and comprehensive protection mechanisms, it ensures reliable, cool, and silent operation. Backed by a 5-year warranty, it’s a dependable choice for professionals and gamers seeking efficient power delivery.

| ASIN | B09GW4S27Q |
| Best Sellers Rank | 193 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 1 in Power Supplies |
| Brand | MSI |
| Brand Name | MSI |
| Compatible Devices | Personal Computer |
| Compatible devices | Personal Computer |
| Connector Quantity | 2 |
| Connector Types | ATX |
| Connector type | ATX |
| Cooling Method | Air |
| Country of Origin | China |
| Current Rating | 45.5 Amps |
| Customer Reviews | 4.6 out of 5 stars 1,785 Reviews |
| EU Spare Part Availability Duration | 5 Years |
| Fan Size | 120 Millimetres |
| Form Factor | ATX |
| Form factor | ATX |
| Item Dimensions | 15 x 14 x 8.6 centimetres |
| Item Highlight | 550W, 80 Plus Bronze Certified, 12V Single-Rail, DC-to-DC Circuit, 120mm Fan, Non-Modular, Sleeved Cables, ATX, UK Powercord |
| Item Type Name | Power Supply, PSU, ATX PSU, ATX Power Supply |
| Item Weight | 1.59 Kilograms |
| Manufacturer | MSI |
| Manufacturer Part Number | 306-7ZP2A18-CE0 |
| Maximum Input Voltage | 230 Volts |
| Minimum Input Voltage | 110 Volts (AC) |
| Model Name | MAG A550BN |
| Model Number | 306-7ZP2A18-CE0 |
| Model name | MAG A550BN |
| Number of Fans | 1 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Output Wattage | 550 |
| Output wattage | 550 |
| Power Supply Design | Non-Modular |
| Product Warranty | 5 Years Limited Warranty |
| System Bus Connector Type | 20+4 Pin |
| Unit Count | 1.0 count |
| Wattage | 550 watts |
C**J
Reliable and quiet power supply with great build quality
I recently upgraded to the MSI MAG A550BN power supply and I am really impressed. Installation was straightforward and it fits perfectly in my ATX case. The 550 watt capacity gives me peace of mind for current and future component upgrades. It runs quietly thanks to the 120 millimeter fan and I hardly notice it during regular use. I appreciate that it is 80 Plus Bronze certified and has a solid single 12 volt rail. The DC to DC design helps keep voltages stable under load. The cables are well made and long enough to comfortably reach all my components without cluttering the case. So far performance has been smooth and reliable. I have not experienced any power hiccups or noise issues. The 5 year warranty also gives me extra confidence that this PSU is built to last.
A**R
Reliable Power Supply – Great Value for Money
The MSI MAG A550BN is a solid and reliable power supply. Installation was straightforward, and it provides stable power with no issues so far. It’s been running quietly, even under load, which is a big plus. The build quality feels good for the price, and the cables are decent quality and long enough for a standard mid-tower case. At 550W, it’s more than sufficient for a typical gaming or everyday PC build. Overall, this is a dependable and affordable power supply from a trusted brand. Ideal for budget or mid-range systems, and I’d happily recommend it.
B**I
Vey good budget PSU
MSI MAG A650BN Review: Dependable Power for Mid-Range Builds The MSI MAG A650BN is a solid 650W power supply that delivers dependable performance for gamers, creators, and everyday users. With 80+ Bronze certification, a quiet 120mm fan, and essential protections built-in, it’s a smart choice for budget-conscious builders who don’t want to compromise on safety or stability. 🔌 Efficient and Reliable Power Delivery Rated at 80+ Bronze, the A650BN offers up to 85% efficiency under typical loads. That means less wasted energy, lower heat output, and reduced electricity bills over time. It’s ideal for systems running mid-range GPUs like the RTX 4060 or RX 7600, and even handles the RTX 5060 with ease. 🛡️ Industrial-Grade Protections MSI includes all the key safety features: Over Voltage Protection (OVP), Over Current Protection (OCP), Over Power Protection (OPP), Over Temperature Protection (OTP), and Short Circuit Protection (SCP). These ensure your components stay safe even during power fluctuations. 🌬️ Quiet Cooling with a 120mm Fan The built-in fan runs quietly and efficiently, keeping internal temperatures stable without adding noise to your setup. It’s a great fit for home offices or gaming rigs where acoustics matter. 🧩 Clean Design and Easy Cabling While it’s not modular, the included cables are well-sleeved and long enough for most ATX cases. The matte black finish and compact dimensions make it easy to integrate into clean builds. 💸 Excellent Value for Entry-Level to Mid-Tier Systems For under £50, the A650BN offers a compelling mix of efficiency, safety, and brand reliability. MSI may be better known for motherboards and GPUs, but this PSU proves they can deliver quality across the board. If you're building a system with a modern CPU and a single GPU, the MSI MAG A650BN is a dependable power source that won’t let you down. It’s not flashy—but it’s functional, efficient, and built to last.
F**E
A no brainer
Not much to say. One of the very best budget power supplies literally of all time. I have never had issues with this, and have always loved to work with them. With a premium name such as MSI comes a premium building experience and also a premium feel with the cable length, ability to manage cables with ease and also great connectivity, only missing the very newest ATX 3.1 connector. The cables are a nice pure black which ties in with all black builds, and the actual internals are good quality, passing all the tests on my PSU tester. *** 5 stars *** My Star Rating: ★★★★★ | No brainer - Top product. Not only do I like it, but it’s well worth it, IMHO ★★★★☆ | Like it - Great product and value for money. I'm happy with this. ★★★☆☆ | OK - Product is average. Nothing wrong, but I’d probably be looking for a sale ★★☆☆☆ | Hmmm… - Not worth the price, functional but nothing better than mediocre ★☆☆☆☆ | Avoid - Very Poor Quality item not fit for purpose. I wouldn’t buy it at any price.
D**E
Good PSU
Good, easy to install and reliable psu.
T**Y
Powering Up Peace of Mind: My MSI MAG A550BN Review
Tired of PSU nightmares? Say hello to the MSI MAG A550BN – the budget-friendly hero that brought stability and silence to my PC. Here's why I'm loving it: Rock-Solid Power: 550W of 80 Plus Bronze certified goodness keeps my rig humming smoothly, even during intense gaming sessions. No more power spikes or jitters, just reliable performance. Whisper-Quiet: The 120mm fan stays surprisingly quiet, even under load. No more annoying PSU whirring to drown out your game audio. It's like adding a noise-cancelling feature to your PC! Built to Last: DC-to-DC circuits, single-rail design, and a comprehensive suite of protections give me peace of mind knowing my precious components are safe and sound. Plus, the 5-year warranty shows MSI stands behind their product. Easy Install, Even for Noobs: Non-modular cables might not be for everyone, but the straightforward layout and included accessories make installation a breeze. Even a first-time builder like me managed it without breaking a sweat. The Verdict: This PSU punches way above its weight. If you're building a budget-conscious PC without sacrificing performance or peace of mind, the MSI MAG A550BN is a no-brainer. It's quiet, reliable, and won't break the bank. 5 out of 5 stars! Bonus Tip: For extra cable management magic, invest in some PSU cable extensions. Your case will thank you for it. I hope this review helps! Let me know if you have any other questions about the MSI MAG A550BN or your build in general. Bard may display inaccurate info, including about people, so double-check its responses.
T**E
Very good psu
Best psu for the price. For the price you get a 650 watt 80+ bronze psu. It is very good and I have had no problem. It is also very quiet and has a nice design.
L**Y
Easy to install
Very good it is also good for how much it costs and has good power for my system installation was very simple as it’s non modular and I didn’t have too many wires spare, it is harder to manage the cables since you will have some leftover without use
R**M
Noise generator!
Beware, very noisy, causes radio interference across all radio bands.
M**M
Very good I reccomend it you should buy it
Very nice and cheap It is very good if youre first time builder the wire wont eneter all the way through so don't worry if it didn't eneter
S**Y
⭐ Great Power Supply!! Perfect for Budget Gaming PC
The MSI MAG A550BN Gaming Power Supply (550W, 80+ Bronze Certified) is an excellent choice for anyone building a budget gaming PC. It delivers reliable performance without costing too much, making it a true value-for-money product. I’ve been using this PSU for my setup, and it works great. It provides stable power output, which helps keep my PC running smoothly even during long gaming sessions. One of the best things about it is how it handles power fluctuations effectively, ensuring my components stay safe and protected. The build quality feels solid, and installation was simple. For a 550W bronze-rated PSU, it offers good efficiency and does exactly what it promises—no unnecessary complications, just dependable performance. Overall, I’m very satisfied with this purchase. If you’re putting together a budget gaming PC and want a reliable, stable, and affordable power supply, this is definitely a great option to consider. 👍
L**E
cool whine
il y a un petit bruit de cool whine ce qui peut être dérangeant
L**I
Best Budget Power Supply for your Budget Build
I bought this power supply to replace my sister's power supply on her PC. This is the best PSU I could find within our budget range. It may be budget but it still has the specifications that I'm looking for like * 80 Plus Bronze certified for high efficiency * 120mm Low Noise Fan * All black cables also, the build quality of this power supply matches the quality of those power supplies around $100.
Trustpilot
2 weeks ago
3 days ago