Gaming PC Power Supply &
UPS Run-Time Calculator
Calculate your true system wattage including microsecond GPU transient spikes and estimate UPS battery backup minutes during power outages.
โ๏ธ Component Power Specifications
๐ UPS Battery Backup Run-Time Calculator
Frequently Asked Questions
Why do I need extra wattage headroom for modern RTX graphics cards?
Modern GPUs (especially RTX 30 and 40 series) generate microsecond transient power spikes that can momentarily reach up to 1.5x to 2x their rated TDP. If your power supply lacks adequate overhead or ATX 3.0 / PCIe 5.0 compliance, these spikes trigger OCP (Over Current Protection) shutdowns.
What 80 Plus efficiency rating should I choose (Bronze, Gold, Platinum)?
80 Plus Gold is the recommended sweet spot for gaming PCs, delivering ~90% power efficiency at 50% load. This minimizes wasted heat, lowers electricity bills, and keeps the internal PSU fan quieter.
How long will a 1000VA / 1500VA UPS keep my PC running during a power cut?
Under full gaming load (400Wโ600W draw), a 1000VA UPS provides roughly 5 to 9 minutes of battery run-time, while a 1500VA UPS provides 12 to 18 minutes. In desktop idle/web browsing, runtime extends to 30โ50+ minutes, giving you plenty of time to save your game and safely shut down.