Customer: Kiss Quiet
Kiss Quiet 550, Sec. 3,
Juan-Yuen Rd, Shulin District, New Taipei City, Taiwan
Kiss Quiet 550, Sec. 3,
Juan-Yuen Rd, Shulin District, New Taipei City, Taiwan
Silent G3 850W
| Electronic Loads |
Chroma 63601-5 x2 |
|
| AC Sources | Chroma 6530, APM SP300VAC4000W-P | |
| Power Analyzers | RS HMC8015 | |
| Oscilloscopes | Picoscope 4444, Siglent SDS2104X PLUS | |
| Sound Analyzer | Bruel & Kjaer 2270 G4 | |
| Microphone | Bruel & Kjaer Type 4955-A | |
| Temperature Logger | Picoscope TC-08 | |
| Tachometer | UNI-T UT372 | |
| Multimeters | Keysight 34465A | |
| UPS | FSP Champ Tower 3kVA, CyberPower OLS3000E 3kVA | |
| Isolation Transformer | 4kVA | |
| Testing Methodology | Cybenetics PSU Test Protocol | |
| Voltage | 115V | 230V |
|---|---|---|
| Efficiency (>1450 Load Combinations) | 88.915% | 90.906% |
| Efficiency Graphs |  |  |
| Average PF (>1450 Load Combinations) | 0.971 | 0.914 |
| Standby Power Consumption | 0.0913W | 0.2579W |
| ErP Lot 3/6 Ready | ✓ | |
| (EU) No 617/2013 Compliance | ✓ | |
| Average Efficiency VSB | 81.587% | 79.111% |
| Voltage | 115V | 230V |
|---|---|---|
| Noise Rating (>1450 Load Combinations) | 34.54dBA | 34.22dBA |
| Noise Graphs |  |  |
| Model Name | Kiss Quiet |
| Serial Number | SGW85024100202 |
| Comments | The unit broke during Over Power Protection evaluation testing under normal conditions. This is a requirement for ATX compliance pass. The efficiency with a 2% load at 115V is lower than the ATX v3.x recommended 70% (66.143%). The AC off to power-ok signal is too short (10.6ms). The delay is also right on the limit (1.0ms) During power-up, the 3.3V rail's voltage exceeds the 5V rail's voltage. This should not occur, according to the Intel Design Guide (DC Power Sequence). Not so high 5VSB efficiency at 230V (79.111%). Very low power factor at 230V (0.914). Very high vampire power consumption at 230V (0.2579W). Ideally, it should be lower than 0.1W. In this case, the PSU cannot get any Cybenetics efficiency certification. Not so-good average transient response, especially on the 3.3V rail: +12V: 1.52%, 5V: 3.19%, 3.3V: 7.30%, 5VSB: 1.55% (deviation) Increased ripple, especially on the minor rails: 115V: +12V: 80.01mV, 5V: 41.71mV, 3.3V: 38.85mV, 5VSB: 21.99mV 230V: +12V: 81.01mV, 5V: 38.87mV, 3.3V: 37.75mV, 5VSB: 22.16mV The PSU could not operate with or without caps during the 10ms (160%) and 1ms (180%) ATX v3.x transient response tests. This is another reason the PSU cannot get an ATX compliance pass. The 3.3V rail drops low during the 0.1ms (200%) ATX v3.x transient response test (3.173V). Not so high efficiency under light loads (20W-80W). 115V: 74.869% 230V: 75.752% Not tight load regulation, especially on the minor rails and 5VSB: 115V: +12V: 1.16%, 5V: 2.87%, 3.3V: 3.50%, 5VSB: 5.66% (deviation) 230V: +12V: 1.17%, 5V: 2.87%, 3.3V: 3.50%, 5VSB: 5.51% (deviation) T3 Timing measurements are higher than the recommended 150ms at 100% load testing (164ms) for ALPM. During 0.045A load testing at 230V on the 5VSB rail, the PSU had 42.313% efficiency. This is below the 45% limit but within our range of 40-45%. The 12+4 pin PCIe connector delivers up to 600W. According to the ATX specs, it should be limited to 300W for an 850W PSU. All PSU samples we received have a 12VHPWR socket on their modular panels, despite being labeled as 12V-2x6. |
| Date of receipt | Dec 12, 2024 |
| Testing Date | Jan 7, 2025 |
| Report Issued Date | Jan 3, 2025 |
| Engineer Name | Mike |
| Authorized By the Laboratory General Manager | Aristeidis Bitziopoulos |
The Noise Measurement’s Uncertainty is ±1.18 dB. The reported expanded uncertainty is based on a standard uncertainty multiplied by a coverage factor k=2, providing a level of confidence of approximately 95%.
The reported noise measurement’s level is the mean of 10 repeated measurements at an environment with a temperature deviation of ±2 degrees Celsius. The uncertainty was estimated according to the method in UKAS Publication M 3003.
| Source of uncertainty | Value ± | Probability distribution | Divisor | Standard uncertainty |
| Calibrator’s calibration | 0.2 dB | Normal | 2 | 0.1 |
| Calibrator’s accuracy | 0.2 dB | Rectangular | √3 | 0.058 |
| Mic Frequency Response | 2 dB | Rectangular | √3 | 0.577 |
| Temperature Variation | 0.04 dB | Rectangular | √3 | 0.012 |
| Operator’s Accuracy | 0.2 dB | Rectangular | √3 | 0.058 |
| Standard uncertainty of mean of 10 repeated readings | Normal | 1 | 0.031 | |
| Combined Standard Uncertainty | Assumed normal | 0.59 dB | ||
| Expanded Uncertainty | Assumed normal (k = 2) | 1.18 dB |
*Here the (±) half-width divided by √3 is used.