Build around real
component power. Power your build.
Search the hardware database, adjust the rest of your build, and compare modern ATX and legacy PSU recommendations.
PSU Power Calculator
Please select a CPU.
Please select a GPU.
Enter 0 to 32.
Enter 0 to 32.
Enter 0 to 50.
Enter 0 to 50.
A recommendation you can understand
The calculator separates estimated draw, transient-load headroom, and the next retail wattage you can actually buy.
CPU, GPU, memory, storage, fans, and other components are combined into one estimated peak figure.
The existing 1STPLAYER formula adds standard-specific allowance without changing your configured hardware.
Products are filtered by PSU standard, then matched from the lowest available wattage at or above the target.
Ready to power the build?
Compare 1STPLAYER power supplies by wattage, standard, and independent efficiency certification.
Calculation notes
The result is an estimate based on component database values and the quantities you enter. Actual consumption can vary with firmware, overclocking, transient spikes, peripherals, temperature, and workload. Always confirm connector and platform requirements before purchase.
How are compatible products selected?
The calculator matches the selected PSU standard, then shows products from the two lowest available wattage tiers at or above the target.
What happens when no compatible product is available?
The calculator keeps the calculated result visible and links to the complete PSU catalog instead of showing an unsuitable product.