ASM1061 and Vertex 4 SSD: anyone above 350MB/s?

Hello,

Been using this very cheap ASM1061 PCIe SATA3 card with no issues for a long while now, except for speed.

The Vertex 4 drive can go well beyond 350MB/s reads and writes, but apparently not on this card.

Has anyone managed to get to higher speeds on this card?

Thanks

Loa