Samsung's 840 EVO update fixes slow reads with old data
 

The differences here aren't as striking, but there's a definite improvement in read performance for older files. Some of the individual files load more than 2X faster after the fix, and one of them experienced a massive 6X speedup. Your mileage may vary, of course, but Samsung's fix seems to work as advertised.

After applying the EVO update, Bruno also noticed snappier application load times. He says Windows now boots faster, too, particularly after it reaches the desktop and starts filling out the taskbar. We don't have hard data on how the fix impacts load times, but OS and application files are likely to be older, so they're good candidates for a speed boost.

Apart from addressing read speeds with older files, the new EVO firmware is supposed to perform identically to the previous release. Bruno ran a couple of quick CrystalDiskMark benchmarks before and after applying the fix, and the scores are pretty much identical.

http://techreport.com/review/27212/s...-with-old-data