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Unless he needs CUDA for 3D work or any program that uses the awesome power of nvidia technology!

It's not really worth getting a GTX260 to replace a GTS250.
Yeah, if you didn't know, adobe premiere and after effects, 3Dsmax and others use the graphics card rendering power to massively speed up work, much faster than a i7 for example.
I'm surprised you didn't know this to be honest, there are youtube videos from companies such as adobe showing the difference with it on and off.
A quick check of nvidia on youtube brings up even more CUDA accelerated programs.
Cyberlink power director
Cyberlink media show
Adobe flash player 10.1
badaboom
Auto cad
Knoll light factory
There are plenty more demonstrations of its benefits.
Autocad is hardly a niche market! Sure car manufacturers and aviation use this?
You're not going to get any more 3d than autocad are you?
Auto cad has been 3d for at least the last 10years. Its also the market leader.
Have you not ever seen TV documentary's about designing buiildings/cars/planes/trains/bridges and virtually everything else in modern times? They rotate and manipulate the design in 3D to check for tolerences and other conflicts. Hardly primarily 2D is it.
I have provided plenty of evidence to CUDA usage at speeding up 3D and productivity.
You not really been able to prove otherwise since your "CUDA for 3D?" Statement.
I suggest you don't ever post on more intellectual forums such as beyond3D and xtremesystems because you will get your ass handed too you.
Go and get some reallife experience and knowledge before you post false statements.
Doesn't sound like you know a dam thing,
I got plenty of friends who are 3Dartists, autocad technicians, local film producers.
As for me, I got a masters degree in 3D art and design. With plenty of proven designs used in the car market.
And I bet you couldn't name the other 95% of the visual design market that don't use CUDA.

owned to be honest! That's usually how you ATI fanboys respond.