Samsung Promises Another Fix for 840 EVO SSD Performance Issues

[[Coi] Mr.CLuBBeR]

The first fix, issued in October, turned out to be a dud

The Samsung 840 Evo launched to some rave reviews in 2013. We gave it a “kick ass” 9 out of 10 and hailed it as “the fastest SSD we have ever tested by a sizable margin.” Unfortunately, some of that luster has since worn off, with a large number of 840 Evo owners reporting a serious decline in read performance of drives with several months’ of data on them. As for the firmware update and Performance Restoration Software that the company released in October to address the issue, they were apparently of very little help as the problem has resurfaced like a recrudescent cancer.
This leaves the South Korean firm with no other choice but to issue another fix, which it says is just around the corner.
“In October, Samsung released a tool to address a slowdown in 840 EVO Sequential Read speeds reported by a small number of users after not using their drive for an extended period of time. This tool effectively and immediately returned the drive’s performance to normal levels,” the company told AnandTech in an email. “We understand that some users are experiencing the slowdown again. While we continue to look into the issue, Samsung will release an updated version of the Samsung SSD Magician software in March that will include a performance restoration tool.”
Although the company has yet to state the cause of this current problem, it could very well have something to do with the original issue, which was caused by the manner in which Samsung’s NAND management algorithms handled NAND cell charge decay.
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