The good The Samsung Portable SSD T1 is tiny yet super-fast. The drive has up to 1TB of storage space, supports data encryption and works with both Mac and Windows. Despite its size, the T1 has the main features of the 850 Evo, which include the use of 3D-vertical NAND flash memory. Traditionally, 2D-planar type NAND flash memory cells - the storage units on an SSD - lie flat on the surface of the silicon wafer. The T1’s internal storage’s flash memory cells are stacked in up to 32 layers, which allows for significantly more cells in the same number of wafer bits. This greatly increases the density and means, among other things, more storage space for less cost. The T1 also supports Samsung’s TurboWrite technology, which enables the drive to operate a portion of its flash memory in a simulated high-performance mode of single-layer-cell flash memory, as a buffer zone. During write operations, data is first written to this zone at high speeds, then, during idle periods, it’s moved from the buffer to the primary storage region. The end result is much faster performance from the user’s perspective. The T1 also supports Samsung’s TurboWrite technology, which enables the drive to operate a portion of its flash memory in a simulated high-performance mode of single-layer-cell flash memory, as a buffer zone. During write operations, data is first written to this zone at high speeds, then, during idle periods, it’s moved from the buffer to the primary storage region. The end result is much faster performance from the user’s perspective. The T1 also works with USB 2.0 with a sustained speed of around 28MBps and 30MBps for writing and reading, respectively.