Am running 650w Antec bought 2010 on my main rig and a Tagan 480w bought 2004/5 ( I think - may be older!) on my secondary rig.
Both can easily cope with the loads they have to carry , so no 'need' to upgrade/replace.
The worry is simply the age of the Tagan - it still runs true and quiet - is it more likely to fail due to age?
For peace of mind a good idea to replace the Tagan with the Antec and buy a new seasonic/xfx 750/850w psu for the main machine?
Thoughts appreciated
And just as an idea how long before you would change ,simply, because of how old the psu is ?
Both can easily cope with the loads they have to carry , so no 'need' to upgrade/replace.
The worry is simply the age of the Tagan - it still runs true and quiet - is it more likely to fail due to age?
For peace of mind a good idea to replace the Tagan with the Antec and buy a new seasonic/xfx 750/850w psu for the main machine?
Thoughts appreciated

And just as an idea how long before you would change ,simply, because of how old the psu is ?