I have been running a Dell 435MT with 4GB (stock) DDR3 memory. (Note that the Dell 4x1GB config does NOT allow for triple-channel mode.)
Running Windows 7 x64 Beta 24x7; NLE video editing, digital photo management, web development, (always) playing music, and easing my way into x64 programming.
Last week I decided to jump the gun and purchased this 3x2GB pack.
Naturally, it meant that one of the 1GB stock strips had to go. Now running a triple-channel configuration of 3x(2+1GB) = 9GB. The machine flies doing ANYTHING you throw at it. Later I will run vBox virtual machines for testing and development purposes, and the amount of memory will come in handy.
Probably will perform some benchmarks later on.
I mainly decided to write this (my first) review, to inform that
1) the items perform up to expectations.
2) they are surely compatible with the Dell Studio 435MT.
3) give an indication of usage patterns where the memory comes in handy.