Developing a budget CUDA computer

I was planning on building a new computer for running some CUDA applications. I’m on a rather tight budget though. I’m planning on getting 2 graphic’s cards, one dedicated to running graphics and the other will be free to run CUDA applications. I was planning on getting a really weak card (maybe a 8400GS) to run the graphics and then get a higher card for kernels (465GTX maybe?). Is this a good setup?

Also, what Linux distribution would be good for developing and setting this up? I was planning on getting Ubuntu since its free and I’ve used it before.

Ubuntu works okay, I run CentOS on my main dev machine because that’s what our cluster uses and I like the glibc compatibility.

Ubuntu works okay, I run CentOS on my main dev machine because that’s what our cluster uses and I like the glibc compatibility.