When you buy an SSD, you look at the drive's performance and endurance. Apparently, Samsung's 990 Pro, one of the best SSDs, has different endurance ratings depending on the country, as noticed by a member of a Polish hardware forum. However, it could be a typo.
From a performance point of view, all of Samsung's 990 Pro SSDs sold worldwide are similar. They promise up to 7,450 MB/s sequential read speed and 6,900 MB/s sequential write speed, making them some of the best PCIe Gen4 SSDs available today. These are all based on the Pascal controller and 176-layer V-NAND memory, based on specifications noted on Samsung's websites, but there are differences.
