Yesterday I was reading a blog by Bob Door (blog) on 512e/Advanced Form Sector drives due to hit the market soon, from the likes of Seagate and WD.
For any serious DBA it is worth taking 30 minutes of your time to read the blog and do your own research
http://blogs.msdn.com/b/psssql/archive/2011/01/13/sql-server-new-drives-use-4k-sector-size.aspx
While doing my research I came across an excellent article from Brian Madden (blog). This post goes into the in/outs of the drive performance .
Enjoy
JL