Az sx300-as teszt linket komolyan gondoltad?
Mikor nem msata3-ba lett kipróbálva?

"The low performance numbers from the SX300 are squarely down to the bandwidth limitations imposed by the 3Gbps interface to the system. We're adamant that a 6Gbps connection would result in the mSATA drive matching the 500MB/s performance exhibited by the majority of 2.5in SSDs here."

LOL...