ATX12V Power Supply Design Guide
Version 2.0
Table 8. Loading Table for Efficiency Measurements
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| 250W (loading shown in Amps) |
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| Loading |
| +12V1 |
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| +12V2 |
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| +5V |
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| +3.3V |
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| Full |
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| 4 |
| 11.5 |
| 6.8 |
| 6.5 |
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| Typical |
| 3 |
| 5 |
| 3 |
| 4 |
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| Light |
| 2 |
| 2.4 |
| 0.3 |
| 0.5 |
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| 300W (loading shown in Amps) |
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| Loading | +12V1 |
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| +12V2 |
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| +5V |
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| +3.3V |
| |
| Full |
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| 7 |
| 12 |
| 8 |
| 7.5 |
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| Typical |
| 4 |
| 8 |
| 3 |
| 4 |
| |||
| Light |
| 2 |
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| 2 |
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| 0.5 |
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| 1.5 |
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| 350W (loading shown in Amps) |
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| Loading |
| +12V1 |
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| +12V2 |
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| +5V |
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| +3.3V |
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| Full |
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| 10 |
| 13 |
| 9 |
| 10 |
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| Typical |
| 5 |
| 9 |
| 3 |
| 5 |
| |||
| Light |
| 3 |
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| 3 |
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| 1.0 |
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| 2.0 |
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| 400W (loading shown in Amps) |
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| Loading |
| +12V1 |
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| +12V2 |
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| +5V |
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| +3.3V |
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0.3
0.1
0.0
0.2
0.1
0.0
0.3
0.1
0.0
+5Vsb
1.0
1.0
1.0
+5Vsb
1.0
1.0
1.0
+5Vsb
1.0
1.0
1.0
+5Vsb
Full
12
14
9
11
0.3
1.0
Typical
5
9
3
5
0.1
1.0
Light
3
3
1
3
0.0
1.0
18
