Do I need an X1900?

None whatsoever...?

Get the best machine you can afford. I would probably gat as much RAM as possible, and (initially) gotten a moderate GPU upgrade, BTO... now, since the X1900 is the "next step" up, and at a fair premium, I'd probably pass... but that's just me...

 

Since you're using Motion, I'd suggest you get the fastest video card possible, also, get at least 4 gigs of RAM.

But seeing the latest Barefeats.com benchmarks, I think you'll be just fine with 7300. Put the saved money into more RAM

 

im not sure if motion need better 3D card, would be nice if you have any test.

 

I wouldn't put a lot of credit into the Motion benchmark. He doesn't take into account GPU intensive tasks such as particle emitters, simulations, etc. He simply renders one of the templates. I would say if you're running Motion, you definitely want the x1900. This coming from someone who has WORKED in Motion using both cards.

 

I didnt know they were rendering a standard theme.

I only worked in Motion on my Radeon 9600

Definetely get the best video card for Motion then.

This, however doent make additional RAM unnecessary. Motion loves RAM

 

I would go with the ATI Radon X1900 XT, it offers a heck of a lot of performance for not much more than the price of the GeForce 7300 GT.