Samsung SM951 256GB PCIe Gen3 8Gb/s x4 M.2 80mm (AHCI Version) Solid State Drive SSD

SM951 for use in ultra-slim notebook PCs and workstations. It comes in the M.2 form factor (80mm x 22mm), which is only about one seventh the size of a 2.5 inch SSD. Also, it weighs approximately six grams. The drive's compactness is well suited for most notebook PC designs, freeing up space for other components including the battery.

How to know the different between SM951and XP941
Most of the customer will ask how to know the different between SM951 and XP941. The most easy way is to check the part number, SM951 part number is MZHPV128HDGM and XP941 is MZHPU128HCGM. If you have more questions you may ask question here on amazon.

Function:
Supporting both PCIe 3.0 and PCIe 2.0 interfaces. For use in the latest ultra-slim notebooks, it can read and write sequentially at 1,600MB/s (megabytes per second) and 1,350MB/s respectively based on PCIe 2.0. This performance level is approximately three times faster than that of the latest SSD with a SATA interface and about 30 percent faster than that of the Samsung XP941, its predecessor. In addition, the new SSD's random read and write speeds reach up to 130,000 and 85,000 IOPS (inputs/outputs per second) respectively.

Size
Samsung's SM951 comes in the M.2 form factor (80mm x 22mm), which is only about one seventh the size of a 2.5 inch SSD. Also, it weighs approximately six grams. The drive's compactness is well suited for most notebook PC designs, freeing up space for other components including the battery.