I have a similar machine (8.0-8.2 Windows index) and haven't bothered with ramdisk or any tuning that I typically needed on my old machine. This weekend I had Lightroom exporting full-res TIFF files, while CS6 was doing a panorama photomerge of 6 photos, while I was working with flash video, and it wasn't breaking a sweat. I've yet to see it use more than 9GB of RAM, and only after I purposely generated multiple smartobject-laden layers.

Just use and enjoy.