Seagate Cheetah 15K.5 FC ST373455FC - Manual (Page 39)

Cheetah 15K.5 FC Product Manual, Rev. D 29
6.3 Power dissipation
ST3300655FC
Typical power dissipation under idle conditions in 4 Gbit operation is 13.3 watts (45.4 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. ST3300655FC DC current and power vs. input/output operations per second at 4 Gbit
ST3300655FC CURRENT/POWER vs THROUGHPUT (FC - 4GB)
Random 8 Block Reads
0.000
0.200
0.400
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0.800
1.000
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1.400
0.0 50.0 100.0 150.0 200.0 250.0 300.0 350.0 400.0
I/Os per Second
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p
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re
s
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Po
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r (
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5Vo lt A
12 Vo lt A
Watts