There are still a few reports knocking around the net that if correctly configured, a good RAID controller and a couple of high end recent drives such as Barracuda 7200.12s or Caviar blacks (I'll also suggest F3s could possible do it for malmental) can hit a WEI of 6-6.5.
"... I made note of the fact that our new levels, 6 and 7, were added to recognize the improved experiences one might have with newer hardware, particularly SSDs, graphics adapters, and multi-core processors. With respect to SSDs, the focus of the newer tests is on random I/O rates and their avoidance of the long latency issues noted above. As a note, the tests don’t specifically check to see if the underlying storage device is an SSD or not. We run them no matter the device type and any device capable of sustaining very high random I/O rates will score well."
Michael Fortin - Engineering the Windows 7 "Windows Experience Index"http://blogs.msdn.com/b/e7/archive/2009/01/19/engineering-the-windows-7-windows-experience-index.aspx
I found a few quotes of people saying they got gigher than 5.9 with mechanical drives but I can't prove the legitamacy.http://www.sevenforums.com/performance-maintenance/103578-windows-experience-index-raid-0-a.html
- bottom of pagehttp://www.tomshardware.com/forum/1677-63-windows-experience-index
And another showing how unreliable WEI actually is.http://forums.amd.com/game/messageview.cfm?catid=261&threadid=128692