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Samsung's 840 Evo repair tool available to download, but be careful of the caveats when you update - ExtremeTech
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Samsung 840EVO Performance Degradation Follow-Up -- Latest Firmware Update and Magician 4.6 Software Now Available | The SSD Review
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Inside the Drives & Spare Area - Samsung SSD 840 EVO Review: 120GB, 250GB, 500GB, 750GB & 1TB Models Tested
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Samsung EVO 840 series may still suffer from performance degradation. 840 EVO owners, please take the time to verify you are not suffering from lousy read speeds! : r/pcgaming
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