Brief Specification Client HDD (2.5-type) MK6461GSY / MK5061GSY / MK3261GSY / MK2561GSY / MK1661GSY ITEM Basic specification MK6461GSY MK5061GSY Serial ATA 2.6 / ATA8 Interface 3.0 Gbit/s Interface speed Formatted Capacity 640GB 500GB Number of data heads 4 Number of disks 2 Number of User data cylinders 1 187,231 168,511 512 byte 1,250,263,728 976,773,168 625,142,448 784.8Mbit/mm2 (506.3Gbit/in2) 612.1Mbit/mm2 (394.9Gbit/in2) RoHS compatible 784.8Mbit/mm2 (506.3Gbit/in2) Environmental compliance Performance 16MiB Buffer size 7,200rpm Rotation speed 4.16 ms Average Latency time 11ms(Read), 12ms(Write) Average seek time 1ms Track to track seek time 19ms Max. seek time Reliability Load/Unload 600,000 times Error rate non-recoverable Supply Voltage 1/1014 bit read 5V ±5% Allowable Voltage Power consumption Start 5.5W (Max.) Seek 2.3W (Typ.) Read/Write 2.1W (Typ.) 0.8W (Typ.) Low power Idle Stand-bye 0.16W (Typ.) Sleep Energy Consumption Efficiency /Category name Dimension 0.13W (Typ.) 0.0013 ⁄ I 0.0016 ⁄ I Height 9.5mm Width 69.85mm 0.0025 ⁄ F 100.0mm Depth Weight Temperature 187,231 512 byte Bytes per sector(DISK) Maximum areal density 320GB 2 Bytes per sector (HOST) Logical Blocks (LBA) MK3261GSY 110g (Typ.) 92g (Typ.) 5 to 55°C Operating Non-Operating -40 to 65°C Shipping Vibration/Shock -40 to 70°C 9.8m/s2 (1.0G) Vibration (op) Vibration (non-op) 49m/s2 (5.0G) Shock (op) 2 3,185m/s (325G) (2ms half sine) Shock (non-op) Acoustics 8,820m/s2 (900G) (1ms half sine) Idle (ave.) 26dB 23dB Seek 26dB 23dB *Definition of Capacity: TOSHIBA defines a megabyte(MB) as 1,000,000bytes, a gigabyte(GB) as 1,000,000,000 bytes, and a terabyte(TB) as 1,000,000,000,000bytes. *Energy Consumption Efficiency: Energy consumption efficiency is calculated based on power consumption divided by formatted capacity, as defined by Japanese law. Brief Specification Client HDD (2.5-type) MK6461GSY / MK5061GSY / MK3261GSY / MK2561GSY / MK1661GSY ITEM Basic specification MK2561GSY MK1661GSY Serial ATA 2.6 / ATA8 Interface 3.0 Gbit/s Interface speed Formatted Capacity 250GB 160GB Number of data heads 2 1 Number of disks 1 1 Number of User data cylinders 168,511 187,231 512 byte Bytes per sector (HOST) 512 byte Bytes per sector(DISK) Logical Blocks (LBA) Maximum areal density Environmental compliance Performance 488,397,168 16MiB Buffer size 7,200rpm Rotation speed 4.16 ms Average Latency time Average seek time 312,581,808 612.1Mbit/mm2 784.8Mbit/mm2 (394.9Gbit/in2) (506.3Gbit/in2) RoHS compatible 11ms(Read), 12ms(Write) 1ms Track to track seek time 19ms Max. seek time Reliability Load/Unload 600,000 times Error rate non-recoverable Supply Voltage 1/1014 bit read 5V ±5% Allowable Voltage Power consumption Start 5.5W (Max.) Seek 2.3W (Typ.) Read/Write 2.1W (Typ.) 0.8W (Typ.) Low power Idle Stand-bye 0.16W (Typ.) Sleep Energy Consumption Efficiency /Category name Dimension 0.13W (Typ.) 0.0032 ⁄ F 0.0050 ⁄ F Height 9.5mm Width 69.85mm Depth 100.0mm Weight Temperature 92g (Typ.) 5 to 55°C Operating Non-Operating -40 to 65°C Shipping Vibration/Shock -40 to 70°C Vibration (op) 9.8m/s2 (1.0G) Vibration (non-op) 49m/s2 (5.0G) Shock (op) 2 3,185m/s (325G) (2ms half sine) Shock (non-op) Acoustics 8,820m/s2 (900G) (1ms half sine) Idle (ave.) 23dB Seek 23dB *Definition of Capacity: TOSHIBA defines a megabyte(MB) as 1,000,000bytes, a gigabyte(GB) as 1,000,000,000 bytes, and a terabyte(TB) as 1,000,000,000,000bytes. *Energy Consumption Efficiency: Energy consumption efficiency is calculated based on power consumption divided by formatted capacity, as defined by Japanese law.