Your Xbench score is extremely low, this drive is capable of about 700MB/s R/W. Try another benchmark like Blackmagic (free) or Quickbench (paid).
Anyway thanks for sharing this. How much is it, if you don't mind asking? Seems that ATM it's only available in HK.
Edit: I see why the benchmark numbers are low: you've put the card in slot 3 which in 3,1 is PCIe 1.0 x4. Card has x4 connector but its Marvell controller is only x2. So in slots 3 and 4 you can achieve ~400MB/s max (due to 8b/10b encoding). Put the card in slot 2 to run the drive at full speed.