The current best AGP card is the 7800GS. However, ATi is porting the X1950PRO to AGP, and it's expected to beat the 7800GS. My advice would be to wait for the X1950PRO; I think it'll be out in a month or two.
I think that the 7800GS used at that site is a reference card straight form nVidia. I've seen many cards being sold with higher clocks. I can't say from experience that the 7800GS will make a noticeable difference, but on paper it would.
if you see yourself playing a game which you really like to play... and you notice the frame rates suck... the game stutters... you cannot play the game on high graphics... then get a new card.
as far as AGP is concerned... your next step up would be a Shader Model 3.0 card... which your 800 does not have... getting a 3.0 card will kick performance a a bit... so you will need to seek higher gpu/mem speed.
If I were you... which i am, so do this, I would, and will, because you are I and I am you, keep the x800xt which you, I, and we have, and be happy with it until a gave presents itself which is truly above and beyond the abilities of the card. At this time the course of action would and will be to upgrade to a new motherboard which supports PCI-E.
my x800xt (xl or pe, whichever you wish to call it) kicks CSS, BF2 and plays Oblivion at 1600x1200 without too much trouble... i cannot tell the difference between "real" SM3 HDR and my SM2 'bloomish "HDR"'
Your call mate, oh wait, it was mine. Sit on your wallet for a while, we will be happy if and when, nay, after, you do.
While my Subject asked if I should keep my card, the body asked if there was a better one out there.
I don't think the specs that I've seen on what's available justify the cost right now. Especially since I'd have to upgrade my power supply too (for something like a 7800GS) - $400 to play a $30 video game doesn't make too much sense.
I'll probably be buying a whole new machine in 6 months anyway, so I'll just choose something then...maybe an X1950XTX or similar.
This is my system:
Radeon X800 XT 256mb/500mhz AGP
My question is:
Is there a better graphics card out there for AGP?
(I'm not interested in a new system or motherboard)
alright, here is the deal, 7800gs should make a good impresion but you won`t feel much difference, as a matter of fact you won`t feel any difference at all in same games...the reason is simple ...those two cards are pretty much close in performance with 7800gs slighty better..
the only noticeable difference you`ll feel is when you upgrade from gf4 to x800, or from gf4 to 7800...or other situations........
consider ...you`ll gonna have to pay for the new card, 7800gs, and it won`t be cheap, and then you`ll gonna have to sell your x800 which you`ll gonna have to sell cheap in order to get rid of it....and the result will be few frames and in many cases none or worse....think about it
your other choice it will be to sell the entire sistem and build a new one from scratch......