I am using the latest firmware (5.0.2).
The drive is connected to Intel SATA III connector on my ASUS P9X79 Pro MB using SATA 6Gbps cable.
This is a fresh Win7 Pro 64 installation with mainly the MB drivers. AHCI is enabled in BIOS (ver. 1010 latest on Asus site).
Also, did the following tweaks in Windows:
1. ) Disabled Pagefile (32GB RAM should be enough )
2. ) Disabled hibernation
3. ) Disabled superfetch service
4. ) Disabled Windows search service
5. ) Disabled drive indexing.
6. ) Disabled disk defrag.
The drive is only 8% filled at the moment.
btw getting 7.9 on WEI.