Test: Samsung SSD 840 und 840 Pro Series - Hardwareluxx
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Amazon.com: New A+ Samsung SSD HDD 840 PRO 2.5" 7mm 128GB MZ-7PD128BW MZ7PD128HCFV-1BW00 0Z000 SATA 3.0 6.0Gb/s MLC Hard Disk Solid State Drive Laptop : Electronics
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Samsung Releases Firmware Update to Fix the SSD 840 EVO Read Performance Bug
Samsung's 840 Evo repair tool available to download, but be careful of the caveats when you update - ExtremeTech