As far as dedicated editing computers are concerned, mine is pretty-much entry-level.
Dual-core Athlon 3.1
GeForce GT220
4GB RAM
2TB internal, 1TB external storage
Some kind of Asus motherboard (don't remember, off the top of my head, but it's not an expensive one)
Anyway, my computer, with CS5, handled the DSLR footage (native format), not exactly smoothly, but good enough to get the job done.
I can't watch more than about 30-seconds of edited footage, in CS5, without it getting jumpy. This was annoying, yes, but it didn't ruin anything for me. As far as watching the overrall flow of an entire scene, the jumpiness didn't get in the way of getting a feel for the rhythm and timing of a scene.
The only time jumpiness would matter is if I'm looking at matching two particular shots. But in that sense, it's not an issue because I'm typically not looking at anything longer than a few seconds long, when cutting from one shot to the next. In fact, the most crucial examination is done on a frame-by-frame basis.
So, point being, yes I would've liked to have a more powerful computer that would be able to handle the footage, without getting jumpy. But if there is anyone out there who is in my shoes, I just want to say that it can be done on something less-powerful.
Maybe my experience would have been better, had I converted to neoscene? We'll never know...