Now I know why the Windows Experience Index does not work, when you boot from VHD: SSD 1048 MB/s write and 1193 MB/s read?
If I boot from a VHD file and run the ATTO benchmark on my Vertex 3 OS SSD. I get the following results: 1048 MB/s write and 1193 MB/s read. Well the Vertex 3 SSD