We measure system-wide power draw from the wall while running Cyberpunk 2077 for 30 minutes.
All four RTX 3050s tested share the same 130W power target, so total system power draw is really within the margin for error across all four models.
We also use Nvidia PCAT to measure power draw of the graphics card only, with readings from both the PCIe slot and the PCIe power cables combined into a single figure. This provides us with significantly more accurate data to work with as it is measuring only the GPU power, and not total system power which is a fundamentally imprecise measurement.
Likewise with our graphics card-only power draw, all four models tested are basically hovering around the same 130W figure, so there's no real-world difference in power draw here.