Is my PSU enough?

I'll no longer trust an Antec TruePower series 1 or 2 in any pc. They are known to have Fuhjyyu (and other ass't low quality) caps that emit magic fluid. Those cap failures could cause undesired ripple, out of spec voltages, and high pitch whines. Read more.....

Personally I would recommend that you scrap your current psu (or RMA it to Antec if it's failed under warranty) in favor of a high quality 80+ psu such as the Corsair VX450 or Antec EA-430 $30 AR @ Newegg
 
As device manager has said, that PSU will probably die. If it was a quality PSU with the exact same specs, then yes it would be able to power that rig with no problems. But then none of the Trupower I or II series as well as the Smartpower series were good quality PSUs.

So get another PSU like the two PSUs that device manager recommended.

Are you hearing any kind of squealing noise coming from the PSU now? If so and if it's under warranty (it has a 3 year warranty), RMA it back to Antec and they'll send you a newer and better quality PSU like the Earthwatts series.
 
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