Looking to buy a new PSU for an 'older' PC

Hey,

My current system :

Athlon XP 3000+
A7N8X Deluxe Motherboard
1.5gb ram
XFX 7800GS Graphics Card

Is currently still chugging along with an older 350W power supply, and i'm thinking I should change it. I'm looking for a good PSU that will keep me going strong with my current setup, but also support an upgrade, possibly in a few years, and although I have my eyes on the OCZ GameXtream or whatever it's called, and the Antec Neo, Neo HE and Truepower 500W+ range, i'm wondering whether they will be able to work on my older board.

Any help is appreciated.

Thanks for the info, i'll take a look.

It's just that i've heard about problems with the Neo HE PSU with older motherboards, in particular the Asus range, so i'm concerned about getting it.

From what I recall, this mobo is "legacy" in regards to the PSU since it lacks the 4-pin +12V connector, so you can neglect the CPU power when you calc the +12v power consumption. If that's the case, keep the old 350W since you probably won't hit over 10A demand on your +12 rail & just get one when you upgrade the bare-bones cpu/mobo/mem (may prevent premature aging )