On Apr 27, 12:58*am, "ZACK`" wrote:
to test them i use a PC/SPS TESTER
just plug the 20/24 pin connecter in and
plug in the power, leds idicate health of
supply.

Tester can identify a defective supply. But it obviously cannot
report a good supply. Ciritical to testing a supply are voltage
numbers when supply is under maximum load. Tester can provide that
load and provides no numbers.