Benefits of Sandy Bridge?

[lodus411]

Just curious if anyone has a good breakdown of the benefits of moving to Sandy Bridge. Basically finally have my latest Hack running well and of course now looking towards the next one. Has anyone had any luck with Dual processors even? Not sure if that's very attainable on the Hack side of things.

 

[hellele]

once os snow leopard is installed, will it be easy to upgrade to Lion?