根據seagate官網的官方7200.3 pdf資料

Model Number ST9320421AS(G)

Power Management
Startup Current 5v (amps max): 1 (7200.2是1.1)
Power Mgmt (watts)
Seek: 2.3 (2.3)
Read/Write Avg.: 2.1 (2.1)
Idle/Standby: 0.75/0.21 (7200.2是 0.8/0.25)

Environmental
Shock (G)
Operating: 2 ms : 350 (300)
Nonoperating: 1 ms : 1000 (900)
Acoustics (bels—sound power)
Idle: 2.3 (2.5)
Performance Seek: 2.5 (2.9)

PERFORMANCE
Average latency: 4.17 msec
Random read seek time: 11.0 msec
Random write seek time: 13.0 msec