450GB models

Typical power dissipation under idle conditions in 4 Gbit operation is 10.24 watts (34.94 BTUs per hour).

To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 4). 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 5. ST3450857FC DC current and power vs. input/output operations per second

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Cheetah 15K.7 FC Product Manual, Rev. C

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Seagate ST3600957FC, ST3300557FC, ST3300457FC, ST3300657FC, ST3450857FC, ST3450757FC, ST3450657FC, ST3600057FC manual 450GB models