Why would you want it as a boot drive? It would add lots of headaches, and barely boot faster than your EVO.
Booting involves lots of small reads to lots of files scattered across the disk. Once you move to *any* SSD and eliminate head motion and seek latencies, you've gained most of the benefit. Using crazy high bandwidth SSDs for boot drives is only a marginal improvement over eliminating the seek latencies.
Look at boot times, not some fancy GUI app showing sequential bandwidth.