Seagate Enterprise Performance 600 GB (ST600MM0009)

This is a 600GB 2.5" HDD on the SAS 12.0 Gb/s interface. At roughly $0.2 per gigabyte it sits in the high-end tier. Sequential throughput reaches 550 MB/s reads and 520 MB/s writes, backed by 256MB of cache. At $120.00 it sits in the high-end drive bracket.

Use the PlanMyPC system builder to verify it works alongside your other components and to keep a running tally of the cost. Warranty coverage follows Seagate's standard policy — confirm regional terms on the listing. The full specification sheet below breaks out every listed detail, and the compatibility checker flags conflicts with parts already in your build.