Table 2: Operating efficiencies of 80 PLUS certified HP CS power supplies
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| Percent of efficiency |
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| Power supply type | @ 10% load | @ 20% load | @ 50% load |
| @ 100% load | |
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| HP 460W CS Gold | 85.02% | 90.39% | 92.43% |
| 91.57% | |
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| HP 460W CS Platinum | 86.50% | 91.20% | 94.37% |
| 93.91% | |
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| HP 460W CS Platinum Plus | 88.58% | 92.05% | 94.42% |
| 93.07% | |
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| HP 750W CS Gold | 87.58% | 90.58% | 92.90% |
| 91.54% | |
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| HP 750W CS Platinum | 88.85% | 92.04% | 94.55% |
| 93.67% | |
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| HP 750W CS Platinum Plus | 89.37% | 92.47% | 94.69% |
| 93.41% | |
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| HP 1200W CS Silver | 78.43% | 86.84% | 91.75% |
| 91.19% | |
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| HP 1200W CS Platinum | 88.74% | 92.53% | 94.34% |
| 93.21% | |
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| HP 1200W CS Platinum Plus | 90.37% | 93.24% | 94.44% |
| 91.92% | |
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Note
Most common load point
Figure 2A: Efficiency curves for HP CS Platinum Plus power supplies
| 98.0% |
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| 96.0% | Peak efficiency range | Peak efficiency range |
| Peak efficiency range |
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| for 460W supply | for 750W supply |
| for 1200W supply |
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| 94.0% |
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Efficiency | 92.0% |
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| 90.0% |
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| 88.0% |
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| 86.0% |
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| 0 | 200 | 400 | 600 | 800 | 1000 | 1200 |
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| Power |
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460W Platinum Plus |
| 750W Platinum Plus |
| 1200W Platinum Plus |
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5
