WD AV-GP 24x7 reliability. These drives are designed to last in always-on, streaming digital audio/video environments such as PVRs, DVRs and surveillance video recorders. Reduced power consumption. With the combination of WD's IntelliSeek, IntelliPark, and IntelliPower technologies, WD has reduced power consumption by up to 40 percent compared to competitors' drives. Whisper quiet. Noise levels have been minimized to less than one sone – virtually below the threshold of human hearing. WD10EURX Product Specifications Interface SATA 6 Gb/s Performance Specifications Rotational Speed IntelliPower * Buffer Size 64 MB Acoustics (Sone) < 1 Transfer Rates Buffer To Host (Serial ATA) 6 Gb/s (Max) Physical Specifications Formatted Capacity 1,000,204 MB Capacity 1 TB User Sectors Per Drive 1,953,525,168 Physical Dimensions English Height 1.028 Inches Depth 5.787 Inches Width 4.00 Inches Weight 1.32 Pounds Metric Height 26.1 mm Depth 147 mm Width 101.6 mm Weight 0.60 kg Environmental Specifications Shock Operating Shock (Read) 65G, 2 ms Non-operating Shock 300G, 2 ms Acoustics Idle Mode 23 dBA (average) Seek Mode 3 24 dBA (average) Temperature (English) Operating 32° F to 140° F Non-operating -40° F to 158° F Temperature (Metric) Operating -0° C to 60° C Non-operating -40° C to 70° C Electrical Specifications Current Requirements Power Dissipation Read/Write 5.30 Watts Idle 3.30 Watts Standby 0.70 Watts Sleep 0.70 Watts As used for storage capacity, one megabyte (MB) = one million bytes, one gigabyte (GB) = one billion bytes, and one terabyte (TB) = one trillion bytes. Total accessible capacity varies depending on operating environment. As used for buffer or cache, one megabyte (MB) = 1,048,576 bytes. As used for transfer rate or interface, megabyte per second (MB/s) = one million bytes per second, megabit per second (Mb/s) = one million bits per second, and gigabit per second (Gb/s) = one billion bits per second.