TR FileBench — Real-world copy speeds
FileBench, which was concocted by TR's resident developer Bruno "morphine" Ferreira, runs through a series of file copy operations using Windows 7's xcopy command. Using xcopy produces nearly identical copy speeds to dragging and dropping files using the Windows GUI, so our results should be representative of typical real-world performance. We tested using the following five file sets—note the differences in average file sizes and their compressibility. We evaluated the compressibility of each file set by comparing its size before and after being run through 7-Zip's "ultra" compression scheme.
|Number of files||Average file size||Total size||Compressibility|
The names of most of the file sets are self-explanatory. The Mozilla set is made up of all the files necessary to compile the browser, while the TR set includes years worth of the images, HTML files, and spreadsheets behind my reviews. Those two sets contain much larger numbers of smaller files than the other three. They're also the most amenable to compression.
To get a sense of how aggressively each SSD reclaims flash pages tagged by the TRIM command, the SSDs are tested in a simulated used state after crunching IOMeter's workstation access pattern for 30 minutes. The drives are also tested in a factory fresh state, right after a secure erase, to see if there is any discrepancy between the two states. There wasn't much of one with the 850 Pro, so we're only presenting the used-state scores.
The 850 Pro doesn't need RAPID mode to turn in a strong performance in FileBench. Samsung's latest is among the leaders in all five tests, and it's the fastest SSD overall.
RAPID caching accelerates copy speeds in the movie, MP3, and RAW tests. The speedups aren't as big as those in CrystalDiskMark and HD Tune, though, and the Mozilla and TR tests actually run slower with RAPID enabled.
The RAPID config's Mozilla and TR copy speeds barely increased over the first three runs, suggesting the performance hit would persist even with more repetition. Additional runs probably wouldn't improve performance in the other tests, where copy speeds only increased substantially between the first and second runs.
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