Proper estimation saved Jamie from random shutdowns, coil whine, and buying twice.
Before buying, Jamie plugged the parts into a (OuterVision, Cooler Master, or Be Quiet!) and cross-checked with reviews. The calculator suggested 750–850W. Tech reviews confirmed the RTX 4070 Ti saw transient spikes near 320W for milliseconds.
“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.”
For stability and efficiency, Jamie knew to add 20–30% headroom: 639W × 1.25 ≈