nothing is wrong here move along. as has been stated the volts are WELL WITHIN limits.
there is also a lot of factors that have been changed when you swap PSU. to name some,
Different efficiency, different power draw from the wall, different cables with different resistance. all these things will affect volts, not to mention the PSU itself.
“it's still EA.. they will F*** it up. F***ing up games is the only thing they do consistently.” -TRIPTEX_MTL