Buy.com offers the Crucial 512GB M4 2.5″ Serial ATA 6Gb/s Internal SSD Solid State Drive, model no. CT512M4SSD2, for $399.49 with free shipping ($0.77/GB). That’s $134 under our April mention and the lowest total price we’ve seen for this SSD. (It’s also a current price low by $24.) It features read speeds of up to 415MB/s and write speeds of up to 260MB/s.
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