HGST HDS721075KLA330 750GB 7200 RPM 32MB SATA 3.0Gb/s 3.5" internal hard drive

Deskstar 7K1000 750GB SATA drive

The HGST Deskstar 7K1000 is a 750GB 3.5-inch internal hard drive built for desktop PCs and workstations. It connects over a SATA 3.0Gb/s interface and spins at 7200 RPM with a 32MB cache. The bare-drive packaging suits system builders and upgraders who need primary or secondary bulk storage. Buyers who want solid-state speed or capacities above 750GB will need a different drive.

750GB capacity with 32MB cache

The 750GB platter array handles operating systems, applications, media libraries and backups in a single volume. Sequential throughput is limited by the SATA 3.0Gb/s link and the 7200 RPM spindle, so sustained transfers top out well below modern SSD speeds. Random access averages 8.5ms seek time and 4.17ms latency, which is adequate for everyday workloads but not for heavy multi-user databases. The 32MB buffer absorbs burst writes but cannot compensate for the mechanical rotation delay.

Thermal monitoring and quiet seek

Thermal monitoring and fly-height control adjust head position to maintain reliability across temperature changes. Three low-power idle modes reduce draw when the drive is not active, and the ramp-load design parks heads safely during power-off. Silent seek acoustics keep operating noise low in typical desktop chassis. Power consumption varies with workload but stays within standard 3.5-inch hard-drive envelopes.