intel e2180 2ghz
asus p5vd2 vm-se
asus p5vd2 vm-se
inno3d / palit 8500gt 512mb
kingston 1gb ddr2-667
1 normal size auxiliary fan
 
no dvd/cd drive
 
is 350w power supply enough for this setup? (for gaming and maya/3ds max)
 
thanks

 Personely I wouldn't. I would how ever aim at the 500 watt range. At the 350 you would be pushing near max for the power supply and imho its better to have some gas left in the tank so to speak. If it spends it life just barely making enough power it will have a short life span and using this retoric the 500watter will leave a tiny bit of room for expansion should the need arise.Unless this machine will spend 85% of the time at idle i wouldn't risk the hardware should undue strain take the psu and cause damage to your other parts.Just my .2 cents and I'm sure you will get othere opinion

I'm with Warlord on this. You might want to see about going bigger. 500W will not set you back much these days.

 450 would work but 550 or 500 is fine as well, and thers not much of a price diff between all of them

 For around $100 there are some great power supplies out there. HotHardware has a great review on the Corsair VX 450 W that would suit you down to the ground. Link

Alternatively, if you wanted I could recommend better ones which would offer a little more future proofing rather than being sufficient for now.

-Dev 

 A 350 watt power supply will be fine for that system. You don't have any power hungry parts in there and the 8500GT requires only 350W w/18A on the 12V rail. 

 If you aren't comfortable with the 350W, a decent 400W will be more than enough. There's no need to spend $100 on a power supply when you can get a quality 400W for less than $50.

Here are two great choices:

FSP (Fortron Source)  ATX400-PA 400W -  $38.99

Silverstone ST400 400W - $46.99 

 If you plug in all your components into the eXtreme Power Supply Calculator Lite v2.5, even it says you'll only need 167 watts. 

 yup nothing high end at all :-( judging by the specs its either a brand name computer inwhich case dont replace anything or you made it yourself on a budget in which case a good 350/400w is good.