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CHEETAH 15K.7 FC PRODUCT MANUAL, REV. E 25
300GB models
Typical power dissipation under idle conditions in 4 Gbit operation is 9.06 watts (30.92 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 6. ST3300657FC DC current and power vs. input/output operations per second