Table 3: | 1000GB Drive DC power requirements |
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| 1.5Gb mode |
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| 3.0Gb mode |
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Voltage |
| +5V | +12V |
| Power | +5V | +12V |
| Power |
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Regulation | ±5% | ±5% |
| (Watts) | ±5% | ±5% |
| (Watts) | |
Avg Idle Current * | 0.27 | 0.27 |
| 4.59 | 0.27 | 0.27 |
| 4.61 | |
Advanced Idle Current * |
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| Idle_A | 0.14 | 0.27 |
| 3.86 | 0.15 | 0.27 |
| 3.99 |
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| Idle_B | 0.14 | 0.23 |
| 3.53 | 0.15 | 0.23 |
| 3.56 |
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| Idle_C | 0.14 | 0.08 |
| 1.70 | 0.15 | 0.08 |
| 1.73 |
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| Standby | 0.09 | 0.01 |
| 0.54 | 0.10 | 0.01 |
| 0.57 |
Transition | Current * |
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| Idle_A (Active) | 0.86 | 0.98 |
| 16.06 | 0.86 | 1.06 |
| 17.02 |
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| Idle_B (Active) | 0.80 | 1.32 |
| 19.90 | 0.76 | 1.27 |
| 19.02 |
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| Idle_C (Active) | 0.76 | 2.76 |
| 36.98 | 0.82 | 2.81 |
| 37.78 |
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| Standby (Active) | 0.78 | 2.99 |
| 39.73 | 0.78 | 3.01 |
| 39.98 |
Average | Sleep Current | 0.09 | 0.01 |
| 0.57 | 0.10 | 0.01 |
| 0.59 |
Maximum Start Current |
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| DC (peak DC) | 0.38 | 2.05 |
| 26.44 | 0.38 | 2.05 |
| 26.45 |
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| AC (Peak DC) | 0.59 | 2.98 |
| 38.76 | 0.69 | 2.99 |
| 39.29 |
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Delayed Motor Start (DC max) | 0.11 | 0.01 |
| 0.66 | 0.11 | 0.01 |
| 0.64 | |
Peak operating current (random read): |
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| Typical DC | 0.30 | 0.49 |
| 7.41 | 0.31 | 0.49 |
| 7.42 |
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| Maximum DC | 0.31 | 0.50 |
| 7.52 | 0.32 | 0.50 |
| 7.56 |
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| Maximum DC(peak) | 0.96 | 1.54 |
| 23.28 | 0.96 | 1.54 |
| 23.28 |
Peak | operating current (random write) |
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| Typical DC | 0.32 | 0.38 |
| 6.20 | 0.33 | 0.38 |
| 6.21 |
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| Maximum DC | 0.33 | 0.39 |
| 6.30 | 0.34 | 0.39 |
| 6.34 |
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| Maximum DC(peak) | 1.30 | 1.58 |
| 25.46 | 1.30 | 1.58 |
| 25.46 |
Peak | operating current (sequential read) |
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| Typical DC | 0.65 | 0.28 |
| 6.64 | 0.65 | 0.28 |
| 6.63 |
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| Maximum DC | 0.66 | 0.29 |
| 6.75 | 0.67 | 0.28 |
| 6.74 |
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| Maximum DC(peak) | 1.00 | 0.62 |
| 12.44 | 1.02 | 0.62 |
| 12.54 |
Peak | operating current (sequential write) |
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| Typical DC | 0.68 | 0.28 |
| 6.79 | 0.68 | 0.28 |
| 6.78 |
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| Maximum DC | 0.70 | 0.29 |
| 6.92 | 0.70 | 0.28 |
| 6.90 |
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| Maximum DC(peak) | 1.26 | 0.74 |
| 15.18 | 1.28 | 0.60 |
| 13.60 |
10 | Constellation ES Serial ATA Product Manual, Rev. G |