Review on SanDisk Extreme microSDXC 256 GB Class 10, V30, A2, UHS-I, R/W 160/90 MB/s, SD adapter by Ognian Mateev ᠌

Remember that flash memory makers consistently and strongly claim that a gigabyte is actually 1000mb, a megabyte is actually 1000kb, and so on. They think in "gibibytes," i.e. different units, rather than the commonly used "gigabytes," the unit in which all operating systems and gadgets measure and display memory. This is already the subject of class action litigation. The increase in memory in these drives has made an obvious and palpable effect, even though it was not so noticeable before (366GB out of 400).