Antec 500W PS with a NX8800GT???

Should be fine depending on how much other draw you have on the 12v. Antec Neo (not sure if this you exact model) is on the second Tier of the this list.

http://www.xtremesystems.org/forums/showthread.php?t=10...

You could always add one of these if your system became unstable.

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Cool, I ordered the card and will see how things go.

Here's my setup
MB: Asus P5K Deluxe
CPU: Core 2 E6750 2.66GHz
PSU: Antec TP3-550
Memory: 2Gigs Patriot DDR2 PC6400, 2GB Crucial Ballistix PC2 8500

All the major components of your system CPU, Video card, drives, etc. draw from the 12v of which you have 3 x 17a. The video card would require a minimun of 26a of the 12v, which you have. You might feel the unit to see if it is running excessively hot under laod. As long as your not crashing down or running hot, your within your unit's capablity.

Do you have the TP3 550W or the Neo 500W? Either will have no problem with your specs and an 8800GT. I run dual 8800GT, a 3.0GHz Q6600, 2 opticals and 2 HDD on a TP3 -550.

wow O_O
i'm using a corsair 450vx with an e2160, 8800gt, hdd and a dvd burner

I personally question the reliability of that list considering it mentions my ThermalTake 500W purepower PSU as tier 3/4 which to them is rated as bad and to stay away from. Yet it runs my OC E2180/8800GT 4x1GB RAM and all that good stuff just fine. In general though I would say 500W is enough for the system. I believe the specs for my 12V rail's are 12V1: 14A 12V2: 15A

Recommend TP 600>. I think the prior chart makers are referring to more 'extreme' systems with heavy overclocking involved. Plus they are including a bit of power 'allowance' as opposed to everyday PSU situations. Like the computers at my front desks. No need for extremity, but efficiency and reliability are of higher concern.

http://www.tomswiki.com/page/Tiered+PSU+Listings?t=anon