Chieftec APB-600B8-BK 600W ATX Power Supply, 80 PLUS, Black

A 600 W rating gives you comfortable room for a typical desktop setup, with spare capacity for future upgrades such as an extra drive or a more capable graphics card. Instead of running a small PSU at its limit, you get a unit with breathing room, which helps keep your system stable during longer work or gaming sessions.

The 80 PLUS certification means the power supply converts most of the electricity it draws into usable power for your components, with less lost as heat. Less waste makes for a cooler-running unit and helps keep your electricity bill in check. It's a sensible baseline for any PC that spends many hours switched on each day.

A 120 mm fan moves air through the unit to keep internal components at a comfortable temperature. A fan of this size can push enough air without needing to spin at high speed, which suits home and office systems. The black finish blends easily into most cases and keeps the build looking tidy.

This PSU suits home users and office workers replacing a failed or ageing power supply, DIY builders putting together a budget-conscious desktop, and anyone upgrading a PC that needs more power. It also fits light gaming rigs and multimedia machines that need dependable power without paying extra for features they won't use.