<p>I've got a Dell XPS M1330 with a 2.2ghz processor, 4gig ram, GeForce 8400M, and a 64GB SSD disk.</p>

<p>I'm primarily doing web-development, sharepoint development, integration (Microsoft BI tools) and biztalk. I use virtual machines for these purposes. I've been using Vista 32Bit up until now but I'm considering moving to 64bit to squeeze that little extra ram out of the box.</p>

<p>I'd like to hear if anyone has been using 64bit vista under the same circumstances and if anything should hold me back. Have in mind that this is the laptop I use at work.</p>

I have recently switched from a Vista 32 bit development machine to a Vista 64 bit development machine, with a quad-core intel processor, and 6gb of ram.  THe performance improvements have been quite impressive, and thus far, no "issues" with any development tools that I have been using.