DELL ST33000650NS Constellation 3TB 7200RPM 64MB 3.5" SATA internal hard drive

Capacity and fit

This Dell Constellation drive provides 3TB of storage in a standard 3.5 inch form factor. It spins at 7200RPM with a 64MB cache and connects via a SATA 6Gb/s interface. A mounting caddy or tray is included for installation in compatible drive bays. It is suited to desktop systems that need high-capacity bulk storage.

Host interface and bay requirements

Before ordering, verify that your motherboard or controller has an available SATA 6Gb/s port and that the chassis has a free 3.5 inch drive bay. The included tray is designed for Dell mounting patterns, so check screw-hole alignment if you are fitting it into a non-Dell case. Ensure your power supply has a spare SATA power connector.

Sustained throughput behaviour

Under continuous workloads the 7200RPM spindle and 64MB buffer deliver consistent sequential transfer rates across the 3TB capacity. The SATA 6Gb/s link handles sustained streaming without the thermal throttling sometimes seen on smaller caches. Mechanical latency remains stable during long write sessions such as backups or video capture.