philubonmat Posted July 23, 2017 Share Posted July 23, 2017 Hello all, I have an issue with Sata III, I get only 105MB/s write and 207.8 MB/s read - SATA 6G PCI Express card - Samsung SSD 850 EVO 250GB. - EL Capitan. - Dell Precision 690 Any help will be appreciated Link to comment Share on other sites More sharing options...
philubonmat Posted July 24, 2017 Author Share Posted July 24, 2017 Try with Trim disabled to compare, though little chance it'll change anything. HI Hervé, Disables and enabled the Trim got same speed. You are correct, the problem could be from PCIe bus. I tried to install Windows 10 on it and got same speed Link to comment Share on other sites More sharing options...
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