Specifications
Kingwin PF-850 Features & Specs
Max. DC Output850W |
PFCActive PFC |
Efficiency80 PLUS Bronze |
Operating temperature0°C - 50°C |
ProtectionsOver Voltage Protection Under Voltage Protection Over Current Protection Over Power Protection Over Temperature Protection Short Circuit Protection |
Cooling135 mm Sleeve Bearing Fan (RL4Z S1352512HH) |
Dimensions150 mm (W) x 86 mm (H) x 160 mm (D) |
Weight2.1 kg |
ComplianceATX12V v2.2, EPS 2.91 |
Warranty5 years |
Price at time of review (exc. VAT)$109.99
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Kingwin PF-850 Power Specs
Rail3.3V | 5V | 12V | 5VSB | -12V |
Max. Power25A | 25A | 62.5A | 3A | 0.3A |
150W | 750W | 15W | 3.6W |
Total Max. Power850W
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Cables & Connectors, Power Distribution
Native Cables
ATX connector (500mm)20+4 pin |
4+4 pin EPS12V/ATX12V (550mm)1 |
8 pin EPS12V (550mm)1 |
Modular Cables
6+2 pin PCIe (450mm)4 |
SATA (450mm+150mm+150mm+150mm)8 |
4 pin Molex (450mm+150mm+150mm) / FDD(+150mm)6 / 2
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Packaging
Exterior
A Look Inside & Component Analysis
Primary Rails Voltage Regulation
5VSB Regulation
Hold-up Time
Inrush Current
Voltage Regulation and Efficiency Measurements
Voltage Regulation & Efficiency Testing Data
Kingwin PF-850
Test | 12 V | 5 V | 3.3 V | 5VSB | Power (DC/AC) | Efficiency | Temp (In/Out) | PF/AC Volts |
20% Load | 12.077A | 1.939A | 1.969A | 0.979A | 169.70W | 86.63% | 40.86°C | 0.877 |
12.269V | 5.137V | 3.345V | 5.089V | 195.89W | 47.21°C | 230.0V |
40% Load | 24.572A | 3.904A | 3.972A | 1.181A | 339.65W | 88.97% | 41.31°C | 0.913 |
12.230V | 5.114V | 3.320V | 5.064V | 381.74W | 49.50°C | 230.0V |
50% Load | 30.726A | 4.899A | 4.986A | 1.585A | 424.59W | 89.00% | 41.80°C | 0.919 |
12.209V | 5.100V | 3.307V | 5.034V | 477.06W | 50.60°C | 229.9V |
60% Load | 36.906A | 5.884A | 6.008A | 1.996A | 509.56W | 88.66% | 42.56°C | 0.927 |
12.189V | 5.088V | 3.294V | 5.002V | 574.75W | 53.95°C | 229.9V |
80% Load | 49.471A | 7.893A | 8.078A | 2.414A | 679.35W | 87.83% | 43.36°C | 0.944 |
12.149V | 5.062V | 3.267V | 4.964V | 773.50W | 55.20°C | 229.8V |
100% Load | 62.756A | 8.925A | 9.155A | 3.053A | 849.12W | 86.43% | 44.90°C | 0.951 |
12.102V | 5.039V | 3.243V | 4.908V | 982.45W | 60.85°C | 229.7V |
110% Load | 69.878A | 8.946A | 9.189A | 3.057A | 933.99W | 85.85% | 46.41°C | 0.955 |
12.083V | 5.027V | 3.232V | 4.901V | 1088.00W | 64.97°C | 229.6V |
Crossload 1 | 1.964A | 18.009A | 18.001A | 0.502A | 177.72W | 81.04% | 43.38°C | 0.881 |
12.242V | 5.089V | 3.304V | 5.094V | 219.29W | 54.82°C | 230.0V |
Crossload 2 | 62.461A | 1.000A | 1.002A | 1.001A | 771.24W | 87.64% | 44.55°C | 0.947 |
12.133V | 5.065V | 3.278V | 5.043V | 880.00W | 59.65°C | 229.7V
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Efficiency
Efficiency at Low Loads
Efficiency at Low Loads
Kingwin PF-850
Test # | 12 V | 5 V | 3.3 V | 5 VSB | Power (DC/AC) | Efficiency | PF/AC Volts |
1 | 1.797A | 1.938A | 1.960A | 0.191A | 39.65W | 68.05% | 0.844 |
12.297V | 5.152V | 3.361V | 5.144V | 58.27W | 230.0V |
2 | 3.353A | 1.939A | 1.963A | 0.386A | 59.78W | 75.53% | 0.864 |
12.293V | 5.151V | 3.359V | 5.132V | 79.15W | 229.9V |
3 | 4.898A | 1.939A | 1.964A | 0.585A | 79.75W | 79.59% | 0.863 |
12.288V | 5.148V | 3.356V | 5.119V | 100.20W | 230.0V |
4 | 6.444A | 1.939A | 1.964A | 0.780A | 99.71W | 82.12% | 0.867 |
12.284V | 5.146V | 3.355V | 5.105V | 121.42W | 230.0V
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5VSB Efficiency
5VSB Efficiency
Kingwin PF-850
Test # | 5VSB | Power (DC/AC) | Efficiency | PF/AC Volts |
1 | 0.102A | 0.53W | 66.25% | 0.059 |
5.162V | 0.80W | 230.6V |
2 | 0.252A | 1.30W | 74.29% | 0.119 |
5.154V | 1.75W | 230.1V |
3 | 1.002A | 5.12W | 77.69% | 0.281 |
5.109V | 6.59W | 230.8V |
4 | 3.002A | 15.01W | 76.50% | 0.374 |
5.000V | 19.62W | 230.8V
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Power Consumption in Idle & Standby
Idle / Standby
Kingwin PF-850
Mode | 12 V | 5 V | 3.3 V | 5VSB | Power (AC) | PF/AC Volts |
Idle | 12.313V | 5.151V | 3.373V | 5.165V | 15.24W | 0.564 |
230.7V |
Standby | 0.12W | 0.009 |
230.6V |
Fan RPM, Delta Temperature and Output Noise
+12V Voltage Regulation Chart
5V Voltage Regulation Chart
3.3V Voltage Regulation Chart
Efficiency Chart
+12V Ripple Chart
5V Ripple Chart
3.3V Ripple Chart
5VSB Ripple Chart
Advanced Transient Response Tests
Advanced Transient Response 20%
Voltage | Before | After | Change | Pass/Fail |
12 V | 12.267V | 12.146V | 0.99% | Pass |
5 V | 5.133V | 5.006V | 2.47% | Pass |
3.3 V | 3.346V | 3.190V | 4.66% | Pass |
5VSB | 5.090V | 5.039V | 1.00% | Pass
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Advanced Transient Response 50%
Voltage | Before | After | Change | Pass/Fail |
12 V | 12.207V | 12.094V | 0.93% | Pass |
5 V | 5.097V | 4.955V | 2.79% | Pass |
3.3 V | 3.307V | 3.161V | 4.41% | Pass |
5VSB | 5.035V | 4.988V | 0.93% | Pass
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Transient Response at 20% Load
Transient Response at 50% Load
Turn-On Transient Tests
Ripple Measurements
Ripple Measurements
Kingwin PF-850
Test | 12 V | 5 V | 3.3 V | 5VSB | Pass/Fail |
20% Load | 49.3 mV | 13.7 mV | 19.4 mV | 11.9 mV | Pass |
40% Load | 59.5 mV | 16.5 mV | 21.0 mV | 13.9 mV | Pass |
50% Load | 67.9 mV | 18.9 mV | 21.6 mV | 14.4 mV | Pass |
60% Load | 77.1 mV | 18.4 mV | 22.9 mV | 15.2 mV | Pass |
80% Load | 94.0 mV | 19.4 mV | 23.7 mV | 19.9 mV | Pass |
100% Load | 106.1 mV | 20.7 mV | 24.3 mV | 23.6 mV | Pass |
110% Load | 113.3 mV | 21.0 mV | 26.0 mV | 25.8 mV | Pass |
Crossload 1 | 39.5 mV | 12.1 mV | 20.9 mV | 12.8 mV | Pass |
Crossload 2 | 88.5 mV | 18.3 mV | 19.6 mV | 16.2 mV | Pass
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Ripple at Full Load
Ripple at 110% Load
Ripple at Crossload 1
Ripple at Crossload 2
Performance Rating
Performance per Dollar
가치와 결론

- Kingwin 전원 850 W가 $ 109.99소매 가격
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- 45 전체 전력 ° C
- +12 V와 5V 전압 조절
- 효율적인 (동 단위에 대한)
- 5 년 보증
- 일본 캡
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- +12 V 레일에 대한 높은 리플
- 낮은 풀 - 업 시간
- 팬
- ATX, EPS, / PCIe 케이블
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8.1