A new RTX 40-series card may require a 750W or 850W unit. Installing it on a 500W PSU will cause crashes.
Ignore the large “600W” marketing number. Find the smaller “ +12V Combined Power ” or “ Max Continuous Power ” value. If a PSU advertises 600W but +12V is only 400W, it is a low-quality unit. check psu wattage
Based on common system configurations, here are some general PSU wattage guidelines: A new RTX 40-series card may require a 750W or 850W unit