I am using the OWC Accelsior adapter, but with a Plextor M5P 'Xtreme, at 256GB. It benchmarks at just under 500 on the Blackmagic Disk Speed Test, and feels a bit faster than it did in the SATA II bay with a 2.5 to 3.5 bay adapter. I assume it would work with the Samsung about the same. This kind of PCIe adapter is a very cost effective solution, and in real life situations, performs at acceptable speed. If you need to transfer a lot of large files, or use an extremely fast scratch disk, you may find that the M2 blade + Lycom adapter is better, but for a startup/system disk this combination seems quite sufficient.