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# Thermaltake Litepower 450W Power Supply Review

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## Testing:

Electrical Safety:

 Electrical Safety Test Class 1 Manufacturer/Model Pass/Fail Thermaltake Litepower 450W Pass

Short Circuit Protection:

I short circuited the 3V3, 5V0, and both 12V lines in turn. The power supply did shut down, and once the short was removed and the unit switched off for at least one second, resumed normal operation. Although listed here at the beginning of the testing section, I tend to leave this test until the very end, in case it doesn't quite go to plan.

Mains Input Voltage 110VAC

 DC Output Voltage Load Regulation AC Supply = 110V / DC Load = 0W PSU DC Line Measured Voltage(V) +3V3 3.46 +5V0 5.06 +12V1 12.25 +12V2 12.26 -12V 12.04 +5VSB 5.10

 DC Output Voltage Load Regulation AC Supply = 110V / DC Load = 112W (25% of Rated Maximum Output Power) PSU DC Line Measured Voltage(V) Measured Current (A) Load Power (W) ATX12V V Limits (V) Pass/Fail +3V3 3.40 3.19 10.85 3.135 – 3.465 Pass +5V0 5.11 4.76 24.32 4.75 – 5.25 Pass +12V0(1) 12.12 2.56 31.03 11.4 – 12.6 Pass +12V0(2) 12.11 2.56 31.00 11.4 – 12.6 Pass -12V0 11.90 0.36 4.28 10.8 – 13.2 Pass +5VSB 4.99 2.08 10.38 4.75 – 5.25 Pass TOTAL POWER SUPPLY DC LOAD = 112W

 DC Output Voltage Load Regulation AC Supply = 110V / DC Load = 242W (54% of Rated Maximum Output Power) PSU DC Line Measured Voltage(V) Measured Current (A) Load Power (W) ATX12V V Limits (V) Pass/Fail +3V3 3.40 3.18 10.81 3.135 – 3.465 Pass +5V0 5.13 4.77 24.47 4.75 – 5.25 Pass +12V0(1) 12.03 8.03 96.60 11.4 – 12.6 Pass +12V0(2) 12.02 7.99 96.04 11.4 – 12.6 Pass -12V0 11.92 0.35 4.17 10.8 – 13.2 Pass +5VSB 4.98 2.03 10.11 4.75 – 5.25 Pass TOTAL POWER SUPPLY DC LOAD = 242W

 DC Output Voltage Load Regulation AC Supply = 110V / DC Load = 448W (100% of Rated Maximum Output Power) PSU DC Line Measured Voltage(V) Measured Current (A) Load Power (W) ATX12V V Limits (V) Pass/Fail +3V3 3.39 10.33 35.02 3.135 – 3.465 Pass +5V0 5.05 13.81 69.74 4.75 – 5.25 Pass +12V0(1) 12.13 13.60 164.97 11.4 – 12.6 Pass +12V0(2) 12.11 13.55 164.09 11.4 – 12.6 Pass -12V0 12.05 0.36 4.34 10.8 – 13.2 Pass +5VSB 4.97 2.03 10.09 4.75 – 5.25 Pass TOTAL POWER SUPPLY DC LOAD = 448W

Mains Input Voltage 230VAC

 DC Output Voltage Load Regulation AC Supply = 230V / DC Load = 0W PSU DC Line Measured Voltage(V) +3V3 3.45 +5V0 5.06 +12V1 12.25 +12V2 12.25 -12V 12.05 +5VSB 5.10

 DC Output Voltage Load Regulation AC Supply = 230V / DC Load = 113W (25% of Rated Maximum Output Power) PSU DC Line Measured Voltage(V) Measured Current (A) Load Power (W) ATX12V V Limits (V) Pass/Fail +3V3 3.40 3.19 10.85 3.135 – 3.465 Pass +5V0 5.11 4.77 24.37 4.75 – 5.25 Pass +12V0(1) 12.11 2.56 30.98 11.4 – 12.6 Pass +12V0(2) 12.10 2.56 30.97 11.4 – 12.6 Pass -12V0 11.90 0.36 4.28 10.8 – 13.2 Pass +5VSB 4.98 2.08 10.36 4.75 – 5.25 Pass TOTAL POWER SUPPLY DC LOAD = 113W

 DC Output Voltage Load Regulation AC Supply = 230V / DC Load = 242W (54% of Rated Maximum Output Power) PSU DC Line Measured Voltage(V) Measured Current (A) Load Power (W) ATX12V V Limits (V) Pass/Fail +3V3 3.40 3.19 10.85 3.135 – 3.465 Pass +5V0 5.13 4.77 24.47 4.75 – 5.25 Pass +12V0(1) 12.03 8.03 96.60 11.4 – 12.6 Pass +12V0(2) 12.02 7.99 96.04 11.4 – 12.6 Pass -12V0 11.92 0.35 4.17 10.8 – 13.2 Pass +5VSB 4.98 2.03 10.11 4.75 – 5.25 Pass TOTAL POWER SUPPLY DC LOAD = 242W

 DC Output Voltage Load Regulation AC Supply = 230V / DC Load = 448W (100% of Rated Maximum Output Power) PSU DC Line Measured Voltage(V) Measured Current (A) Load Power (W) ATX12V V Limits (V) Pass/Fail +3V3 3.39 10.35 35.09 3.135 – 3.465 Pass +5V0 5.05 13.94 70.40 4.75 – 5.25 Pass +12V0(1) 12.14 13.57 164.74 11.4 – 12.6 Pass +12V0(2) 12.12 13.51 163.74 11.4 – 12.6 Pass -12V0 12.06 0.36 4.34 10.8 – 13.2 Pass +5VSB 4.97 2.03 10.09 4.75 – 5.25 Pass TOTAL POWER SUPPLY DC LOAD = 448W

No problems here. All voltages well within the ATX12V V2.2 specification from zero to full load, giving excellent DC output load regulation.

1. Introduction & Closer Look
2. Closer Look (The Power Supply)
3. Specifications & Features
4. Testing: DC Voltage Load Regulation At 110VAC & 230VAC
5. Testing: Efficiency, Power Factor & DC Quality
6. Testing: Temperature, Noise Level & Fan Speed
7. Conclusion
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