The HGST HCP725025GLAT80 hard drive strikes the perfect balance between performance and acoustics. it features IDE Ultra ATA133 interface, 7200 RPM and 8MB cache which ensure quick data transfers, better throughput, fast system boot-up and screen refreshes. This gives you the speed, reliability and capacity you need for ATA-RAID and other multiple drive systems. This hard drive is enhanced with silentseek acoustics to deliver bedroom-quiet operation. Other advanced features include exclusive load/unload ramp mechanism and perpendicular magnetic recording (PMR).