Your motherboard has 4 SATA 3 (6Gb/s) ports.
Make sure your SSD is connected to one of the Intel 6Gb/s ports (SATA6G_1 or SATA6G_2).
If it is currently in SATA6G_1 then switch to SATA6G_2 and retest.
If it is currently in SATA6G_2 then switch to SATA6G_1 and retest.
In my case, i have 2 ssd
one vertex2 3gb/s and one samsung 840 pro 6gb/s
in this case how proceed ?
See here the difference result: