I am RMA'ing my Motherboard right now so I cannot post a screen shot of my score but I agree with others that the HD benchmark is not the best. I am running a Adaptec 51245 RAID controller (the card alone has a 1.2 GHz Dual core with 512MB of RAM) with three arrays:

1) 4 Seagate 7200.11 1.5TB drives in RAID 5
2) 4 Fujitsu MAX3147RC SAS (147GB 15,000 RPM's) in RAID 0
4) 4 30GB OCZ Core V2 SSD's in RAID 0

With vista installed on the either the SSD or the SAS array I cannot get a score over 6.5 so I do not know what it takes to get a score of 7.9 I have not tried installing on the RAID 5 array so maybe it takes size into account. Also, I installed it on a freshly formatted array both times. The SAS array only had a score of 6.0. Keep in mind this array is capable of 400 MB/sec writes and ~6ms access times