(Please visit the site to view this video)
PLEASE LOOK AT THIS VIDEO FOR UPDATED PERFORMANCE MEASUREMENTS
http://www.youtube.com/watch?v=f2xVrZs4w60
To measure simple performance on a local system between NAV 2013 Beta and NAV 2009 R2 has a simple process creating 100 Sales Order with a single line and posting them been created.
A summary of the result are below.
NAV 2013 Beta - RTC - SQL: 22.1
NAV 2009 R2 - Classic - Client SQL: 21.1
NAV 2009 R2 - RTC - SQL: 16.8
NAV 2009 R2 - Classic Client - Native: 11.6
VirtualBox: 4 CPU's 4 GB of RAM, Virtual disk on SSD
Host: Core i7-2600K (@4.2GHz) with 16 GB of RAM, SSD C-Drive and Data drive. HDD 2 TB storage drive