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
Samsung SSD 840 evo 250GB slow performance? | Tom's Hardware Forum
Random & Sequential Performance - Samsung SSD 840 EVO Review: 120GB, 250GB, 500GB, 750GB & 1TB Models Tested
Samsung 840 Pro SSDs now RAPID Compatible and Benched at 1GB/s Speeds - Samsung Magician Free Download | The SSD Review
SAMSUNG 840 EVO MZ-7TE250BW 2.5" Internal SSD - Newegg.com