I tested a 250 GB Samsung 840evo and a 128GB mSATA Transcent. First I installed the Evo and cloned with a USB to SATA adapter still built my notebook SSD it. After the EVO came into notebook and the old 128GB Transcent that would otherwise not found any use, in this case. I could encounter problems when two SSD's no recognition, heat or performance. Now the duo is working in a PC and the Transcent dusty not useless in the drawer. So why spend more? Strong buy recommendation.