Power Supply Buying Guide: How to Choose the Right PSU for your Desktop PC

Find the best PSU for your PC with our comprehensive buying guide and expert tips.
Find the best PSU for your PC with our comprehensive buying guide and expert tips.
This buying guide piece is part of our editorial coverage for buyers in Bangladesh. Everything below is in stock and priced live — the figures update as the catalogue does, so what you see here is what you would pay today.
We have picked out 6 options to look at, starting with Value-Top S200i Real 200W Power Supply, Dell 550-Watt Hot-Plug Server Power Supply, Xtreme XPS200B 200W ATX Non-Modular Power Supply. Each one links straight through to its full specification, warranty terms and delivery options.
Prices in this market move week to week, and stock on the popular models moves faster. If something here is right for you, the product page will tell you whether it is available today or on pre-order.
Written by the editorial team. This is demonstration content for a demo storefront — the products, prices and specifications are real, the commentary is our own.
Products in this guide
Live prices and stock — these update as the catalogue does.

Gigabyte AI TOP 100 Z890 Core Ultra 9 128GB DDR5 RAM 2TB SSD RTX 5070 TI EAGLE OC SFF Gaming Desktop PC
- • Model: AI TOP 100 Z890
- • Processor: Intel Core Ultra 9 processor 285K
- • Memory: 128GB (4x32GB) DDR5 U-DIMM

AMD Ryzen 3 2200G Desktop PC
- • Model: Ryzen 3 2200G Desktop PC
- • AMD Ryzen 3 2200G Quad-Core Processor With Radeon Vega 8 Graphics
- • GIGABYTE B450M K AMD AM4 Micro ATX Motherboard

Intel Core i3-12100 12th Gen Budget Desktop PC
- • Model: Intel Core i3-12100 12th Gen Budget Desktop PC
- • Intel Core i3-12100 12th Gen Alder Lake Processor (Tray Box)
- • MSI PRO H610M-S DDR4 m-ATX Motherboard

Value-Top S200i Real 200W Power Supply
- • Model: S200i
- • Power Output Capacity: 200W
- • 1.2m UK power cord

Dell 550-Watt Hot-Plug Server Power Supply
- • Model: Dell 550-Watt
- • Output Power: 550 Watts
- • Input Voltage: 100-240V AC

Xtreme XPS200B 200W ATX Non-Modular Power Supply
- • Model: XPS200B
- • Power Output Capacity: 200 Watt
- • With 1.2M UK Power Cable