sat in a dim room, surrounded by a mountain of boxes. On his desk sat a beast of a machine: a high-end motherboard, a sleek liquid cooler, and the crown jewel—an RTX 4090. He was one component away from his dream build, but he was stuck on the most overlooked part: the Power Supply Unit (PSU).
| Component | Typical Max Power (Watts) | Your Value | |-----------|--------------------------|-------------| | CPU (low-end) | 65 W | ______ | | CPU (mid-range) | 95–125 W | ______ | | CPU (high-end) | 150–250 W | ______ | | GPU (entry) | 75 W | ______ | | GPU (mid) | 150–225 W | ______ | | GPU (high-end) | 250–450 W | ______ | | Motherboard | 40–80 W | ______ | | RAM (per stick) | 3–5 W | ______ | | SSD (SATA or M.2) | 2–5 W | ______ | | HDD (7200 rpm) | 6–10 W | ______ | | Fans (120 mm) | 2–4 W | ______ | | AIO / liquid pump | 10–15 W | ______ | | USB devices (total) | 10–20 W | ______ | | LED strips | 5–15 W | ______ | psu wattage calculator
Let's say we're building a gaming PC with the following components: sat in a dim room, surrounded by a mountain of boxes
When building or upgrading a computer, one of the most critical components to consider is the power supply unit (PSU). A PSU that is too small may not be able to handle the power requirements of your system, leading to instability, crashes, or even damage to your components. On the other hand, a PSU that is too large can be a waste of money and may not be as efficient as a smaller unit. This is where a PSU wattage calculator comes in – a tool that helps you determine the ideal wattage for your system's power supply. | Component | Typical Max Power (Watts) |
Here’s a for manually calculating your PC’s required power supply wattage. You can print this or copy it into your document.
PSU Calculator | PC Power Supply Wattage Calculator - Corsair
Using a PSU wattage calculator is typically straightforward. Here's a step-by-step guide: