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Samsung 850 Pro SSD slow write speed
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<blockquote data-quote="Csmac" data-source="post: 1853398" data-attributes="member: 273394"><p>I have a MBP, mid 2012 and a Samsung 850 Pro that I bought about 4 years ago. It's always been fast with just over 500 MB/sec read and just under 500 MB/sec write. Now the speed is slowing down to about 350 MB/sec write and read can be between 400-500 MB/sec. I've checked the file system and done the fsck -fy. Trim in enabled. Empty space on the drive is 130 GB. Ideas? SMART doesn't report any issues. I'm at a loss to figure out why the slowdown. Speed checked with BlackMagic Speedtest and AJA System Test and they pretty much agree though BlackMagic shows a bit faster performance, but I think it is using Cache and AJA has cache disabled for the test.</p></blockquote><p></p>
[QUOTE="Csmac, post: 1853398, member: 273394"] I have a MBP, mid 2012 and a Samsung 850 Pro that I bought about 4 years ago. It's always been fast with just over 500 MB/sec read and just under 500 MB/sec write. Now the speed is slowing down to about 350 MB/sec write and read can be between 400-500 MB/sec. I've checked the file system and done the fsck -fy. Trim in enabled. Empty space on the drive is 130 GB. Ideas? SMART doesn't report any issues. I'm at a loss to figure out why the slowdown. Speed checked with BlackMagic Speedtest and AJA System Test and they pretty much agree though BlackMagic shows a bit faster performance, but I think it is using Cache and AJA has cache disabled for the test. [/QUOTE]
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