the u100 is a sandisk ssd, not an intel one. it's a rubbish drive, that's why the performance is so weak.if you're having stability issues with the irst drivers, uninstall them and go back to standard msahci.
So I changed SATA mode from RAID to AHCI and upon saving and exiting I got BSOD. Thankfully, all I had to do was revert back to RAID and my system was up and running again.
if you're running windows vista/7, boot into windows and ...