3 ms·TLC,QLC,MLC in ssd is it. so it is used already. and it gives you limits of current technology.by Calwestjobs 1y agoTLC,QLC,MLC in ssd is it. so it is used already. and it gives you limits of current technology.ziddoap 1y ago>*TLC,QLC,MLC" For those unaware of these acronyms (me): TLC = Triple-Layer Cell QLC = Quad-Level Cell MLC = Multi-Level Cellfeitingen 1y agoFor those unaware, MLC used to mean mean Two-level cell. Quad-level is the current practical maximum.