Citat:
TLC is technically a form of MLC.
MLC = Multi Level Cell(while most are 2bit/cell, 3 can still be called MLC)
TLC = Triple Level Cell(3 bits)
Your biggest advantage to TLC nand is the price(cost less to make and customers can get a bigger drive for a lower price). It has about 30% higher latency, but than again MLC(2 bit/cell) have twice the latency of SLC(Single Level Cell). Samsung has a good track record, this makes the drives the sell popular.
For most users, in day to day use, both will provide very similar results.
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Källa: http://www.tomshardware.co.uk/answers/id-1697953/tlc-mlc-ssd....