Power Dissipation - Seagate Cheetah 15K.6 FC ST3146356FC Product Manual

6.3

Power dissipation

450GB models
Typical power dissipation under idle conditions in 4 Gbit operation is 12.09 watts (41.25 BTUs per hour).
To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure
7). Locate the typical I/O rate for a drive in your system on the horizontal axis and read the corresponding +5
volt current, +12 volt current, and total watts on the vertical axis. To calculate BTUs per hour, multiply watts by
3.4123.
Figure 7. ST3450856FC DC current and power vs. input/output operations per second at 4 Gbit
34 Cheetah 15K.6 FC Product Manual, Rev. C