Amazon.com: Western Digital_BLACK 8TB Gaming Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, 128 MB Cache, 3.5,WD Black 500Gb 7200RPM SATA 2.5,WD Black 500Gb 7200RPM SATA 2.5,Amazon.com: Western Digital 500GB WD Black Performance Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, 64 MB Cache, 3.5