Western Digital WD800JD 80GB 7200 RPM 8MB 3.5" SATA internal hard drive

80 GB SATA/150 desktop drive

The Western Digital WD800JD is an 80 GB 3.5-inch internal hard drive spinning at 7200 RPM with an 8 MB cache. It connects through a SATA/150 interface rated at 150 MB/s and is sold as a bare drive in new condition. The unit targets high-end PCs, workstations and entry-level servers needing modest capacity.

Straightforward SATA installation

Mount the drive in any standard 3.5-inch bay using four screws and attach a single SATA data cable plus a SATA power connector. The SATA/150 interface uses a compact seven-pin cable that removes the alignment issues common with wide parallel ATA ribbons. Hot-swap capability is listed, so the drive can be inserted or removed without powering down the system when the host controller supports it.

Steady throughput for sustained workloads

The 7200 RPM spindle and 8 MB buffer deliver consistent sequential transfer rates up to the SATA/150 ceiling during extended reads or writes. Because the mechanism is designed for desktop and entry-server duty cycles, performance remains stable across long backup jobs or continuous logging tasks rather than peaking only in short bursts. The 150 MB/s interface bandwidth sets the practical ceiling for sustained data movement.