elo guys ive installed this "pc health" monitoring software and found out that the voltage output of my system is below average:

heres the scenario: i have 2 HDD's, 2 CD-ROM's and recently i added 2 chassis fans.

and heres what appears on the pc-health monitoring software:
v-core- 1.65 v
+3.3 v - 3.39v
+5v - 4.87v
+12v - 11.68v
-12v - 9.06v
5vsb - 4.87v
CPU temp - 48C(idle) 52-55C(full load)
System Temp - 36-37C

if i upgrade to a higher-rated PSU will the voltage output of my system become stable?

btw my cpu is a pIII-733 and PSU is 230V