SLC (Single Level Cell)
The Single Level Cell flash is so called for it's single bit that can either be on or off when charged. This type of flash has the advantage of being the most accurate when reading and writing data, and also has the benefit of lasting the longest data read and write cycles.
eMLC (Enterprise Multi Level Cell)
eMLC is MLC flash, but optimized for the enterprise sector and has better performance and lastability. Read/write data life cycles are expected between 20,000 and 30,000. eMLC provides a lower cost alternative to SLC, yet maintains some of the pros of SLC.
MLC (Multi Level Cell)
MLC flash as it's name suggests stores multi bits of data on one cell. The big advantage of this is the lower cost of manufacturing versus manufacturing SLC flash. The lower cost in flash production is generally passed onto you as the consumer, and for that reason is very popular among many brands.
TLC (Triple Level Cell)
Storing 3 bits per cell, TLC flash is the cheapest form of flash to manufacture. The biggest disadvantage to this type of flash is that it is only suitable for consumer usage, and would not be able to meet the standards for industrial use. Read/write life cycles are considerably shorter at 3,000 to 5,000 cycles per cell.
QLC (Quad Level Cell)
It can store 4bits per cell
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