历史最低：Crucial镁光256GBSSD固态硬盘，$284.99 京东要2599元

Crucial 256 GB m4 2.5-Inch Solid State Drive SATA 6Gb/s CT256M4SSD2

Solid state disk, SATA III 6 Gb/sec
Backward compatible with SATA II, 3 Gb/sec
500 MB/sec sequential reads (at 6 Gb/sec)
260 MB/sec sequential writes (at 6 Gb/sec)