“Don’t just guess,” Jamie muttered, remembering a friend’s horror story about a cheap 500W PSU that took a motherboard with it. “Time to do this right.”
Jamie chose an unit. Why not 750W? Because 850W gave room for future upgrades (more drives, RGB, or a hungrier GPU) and kept the PSU in its most efficient load range (40–60% during gaming, not near 80–90%).
Proper estimation saved Jamie from random shutdowns, coil whine, and buying twice.
Here’s a short, scenario-based story that walks through estimating a PC’s wattage properly.