Comment Re:Wonder what brand is best now... Intel? (Score 1) 101
840 and 840 EVO are using TLC NAND which is "early SSD" all over again in some respects, and the bug itself is not in the wear-leveling, but on read-retry on cells which are not written to for a certain period of time. Agressive wear leveling (by shifting the data around) can get around this problem, but it is not desirable, especially on TLC NAND which has fewer P/E cycles than MLC or SLC.
So hopefully the fix is really in the read calibration to get "right" results from cells without retries, and not a workaround which would lower the life expectancy of the drive.