Then compare with PSU’s rated current per rail. Leave 20% headroom on each rail.
While software like HWInfo or Speccy can't "see" the PSU name, they can tell you what your other parts are. You can use this to work backward. Note your CPU and GPU models. whats my power supply
, which is typically the large metal box at the bottom or top rear of the case. Then compare with PSU’s rated current per rail
If you’re asking "What power supply do I have?" here is the quick 411: whats my power supply
your computer and flip the switch on the back of the PSU to "Off."