Customer: Cybenetics LTD
Syrou 6, Latsia, 2231, Nicosia Cyprus
Syrou 6, Latsia, 2231, Nicosia Cyprus
C850 Gold
| Electronic Loads | Chroma 63601-5 x2 Chroma 63600-2 Chroma 63640-80-80 x10 Chroma 63610-80-20 |
| AC Sources | Chroma 6530, APM SP300VAC4000W-P, GW Instek ASR-3500 |
| Power Analyzers | Rohde & Schwarz HMC8015 & NPA701 |
| 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 |
| EMI Analyzer | TekBox TBMR-110M-EU |
| Isolation Transformer | 4kVA |
| UPS | FSP Champ Tower 3kVA, CyberPower OLS3000E 3kVA |
| Testing Methodology | Cybenetics PSU Test Protocol |
| Voltage | 115V | 230V |
|---|---|---|
| Efficiency (>1450 Load Combinations) | 88.749% | 90.910% |
| Efficiency Graphs | ||
| Average PF (>1450 Load Combinations) | 0.987 | 0.963 |
| 12V Step | - | |
| 5V/3.3V Step | - | |
| Standby Power Consumption | 0.0132W | 0.0704W |
| ErP Lot 3/6 Ready | ✓ | |
| (EU) No 617/2013 Compliance | ✓ | |
| Average Efficiency VSB | 82.065% | 80.652% |
| Load range | Points | Efficiency 115V | Efficiency 230V | PF 115V | PF 230V |
|---|---|---|---|---|---|
| 0-<20 % | 200 / 200 | 84.23% | 85.27% | 0.966 | 0.883 |
| 20-<40 % | 318 / 318 | 89.27% | 90.77% | 0.985 | 0.960 |
| 40-<60 % | 319 / 319 | 90.39% | 92.44% | 0.989 | 0.975 |
| 60-<80 % | 318 / 318 | 89.67% | 92.29% | 0.993 | 0.981 |
| 80-100 % | 326 / 326 | 88.51% | 91.67% | 0.995 | 0.986 |
| 70-100 % (High-Load) | 486 / 486 | 88.81% | 91.83% | 0.995 | 0.985 |
| All (published average) | 1481 / 1481 | 88.75% | 90.91% | 0.987 | 0.963 |
The average efficiency and power factor in five ranges of load. Calculated from the 1481 (115V) and 1481 (230V) load combinations of the certification sweep, the same data that ETA and LAMBDA use (test 0 excluded). Load is the total DC output as a share of the rated 850 W. These are plain averages of the valid readings, as for the ETA rating, so the ranges combined give back the published averages.
Informational. Not part of the ETA or LAMBDA rating.
| Voltage | 115V | 230V |
|---|---|---|
| Noise Rating (>1450 Load Combinations) | 25.41dBA | 25.44dBA |
| Noise Graphs | ||
| Load range | Noise 115V avg (loudest) | Noise 230V avg (loudest) | Fan off 115V / 230V |
|---|---|---|---|
| 0-<20 % | 5.0 (5.0) | 5.0 (5.0) | 100% / 100% |
| 20-<40 % | 5.0 (5.0) | 5.0 (5.0) | 77% / 77% |
| 40-<60 % | 5.0 (5.0) | 5.0 (5.0) | 1% / 1% |
| 60-<80 % | 14.8 (21.8) | 14.9 (21.8) | 0% / 0% |
| 80-100 % | 31.9 (37.5) | 31.9 (37.5) | 0% / 0% |
| 70-100 % (High-Load) | 30.2 (37.5) | 30.3 (37.5) | 0% / 0% |
| All (published average) | 25.4 (37.5) | 25.5 (37.5) | 30% / 30% |
The average noise in five ranges of load, the share of points with the fan stopped (semi-passive operation), and the High-Load Index: the same figures for all points at 70 % of the rated output and above. Calculated from the 1481 (115V) and 1481 (230V) load combinations of the certification sweep, the same data that ETA and LAMBDA use (test 0 excluded). Load is the total DC output as a share of the rated 850 W. Noise is averaged on the energy scale, as for LAMBDA, so the ranges combined give back the published average noise. Each load combination is held for about five seconds; the stabilized readings at fixed loads are under "Noise under high ambient temperature".
Informational. Not part of the ETA or LAMBDA rating.
| Load | Normal ambient fan · noise · intake | High ambient fan · noise · intake | Noise change |
|---|---|---|---|
| 10% | 0 RPM · <6.0 dB(A) · 44.3 °C | 0 RPM · <6.0 dB(A) · 44.3 °C | fan off in both |
| 20% | 0 RPM · <6.0 dB(A) · 45.5 °C | 0 RPM · <6.0 dB(A) · 45.5 °C | fan off in both |
| 50% | 409 RPM · <6.0 dB(A) · 42.1 °C | 409 RPM · <6.0 dB(A) · 42.1 °C | <6.0 in both |
| 100% | 1248 RPM · 36.1 dB(A) · 45.7 °C | 1248 RPM · 36.1 dB(A) · 45.7 °C | +0.0 dB(A) |
| Load | Normal ambient fan · noise · intake | High ambient fan · noise · intake | Noise change |
|---|---|---|---|
| 10% | 0 RPM · <6.0 dB(A) · 44.4 °C | 0 RPM · <6.0 dB(A) · 44.4 °C | fan off in both |
| 20% | 0 RPM · <6.0 dB(A) · 45.4 °C | 0 RPM · <6.0 dB(A) · 45.4 °C | fan off in both |
| 50% | 413 RPM · <6.0 dB(A) · 42.3 °C | 413 RPM · <6.0 dB(A) · 42.3 °C | <6.0 in both |
| 100% | 1249 RPM · 36.1 dB(A) · 45.6 °C | 1249 RPM · 36.1 dB(A) · 45.6 °C | +0.0 dB(A) |
Fan speed, noise and the measured intake temperature at 10, 20, 50 and 100 % load, from the two load regulation tests: at normal ambient (about 30-32 °C) and at high ambient (about 40-47 °C). These are stabilized readings at fixed loads, not averages over the certification sweep, so they are indicative of how the fan behaves when it is hot. "<6.0" is the floor of our sound meter: the fan is stopped or too quiet to measure (the fan speed column says which); with the fan stopped, the intake sensor can read higher than the chamber air.
Informational. Not part of the ETA or LAMBDA rating.
| Efficiency With 10W (≤500W) or 2% (>500W) Load | 77.025% |
| Hold Up Time | 25.60ms |
| Power OK | 24.20ms |
| Power OK to DC Loss | 1.40ms |
| Test\Rail | +12V | 5V | 3.3V | 5VSB |
| 100ms | 11.984 | 5.037 | 3.309 | 4.968 |
| 10ms | 11.810 | 5.013 | 3.278 | 4.927 |
| 1ms | 11.721 | 5.001 | 3.260 | 4.906 |
| 0.1ms | 11.580 | 4.983 | 3.233 | 4.876 |
| Product Identification Details | |
| Brand | NZXT |
| Model | C850 Gold |
| OEM/ODM | Channel Well Technology |
| Serial Number | 52241Z06500003 |
| Product Specifications | |
| Manufacturer | |
| Rated Voltage (Vrms) | 100-240 |
| Rated Current (Arms) | 10 |
| Rated Frequency (Hz) | 50-60 |
| Rated Power (W) | 850 |
| Operating Temperature (Continuous Full Load) (°C) | |
| Type | ATX12V |
| Cable Design | Fully Modular |
| Warranty | - |
| Cybenetics | |
| Dimensions (W x H x D) | |
| Weight | |
| Cooling | 135mm Fluid Dynamic Bearing Fan (HA13525H12SF-Z) |
| Semi-Passive Operation | ✓ (selectable) |
| Cybenetics Testing Information | |
| Lab ID | NZ85002451 |
| Date of receipt | May 7, 2024 |
| Testing Date | May 21, 2024 |
| Report Issued Date | May 22, 2024 |
| Engineer Name | - |
| Authorized By the Laboratory Technical Manager | Aristeidis Bitziopoulos |
| Signature |  |
| Modular Cables | ||||
| Description | Cable Count | Connector Count (Total) | Gauge | In Cable Capacitors |
| ATX connector 20+4 pin (600mm) | 1 | 1 | 16-20AWG | No |
| 4+4 pin EPS12V (700mm) | 1 | 1 | 16AWG | No |
| 8 pin EPS12V (700mm) | 1 | 1 | 16AWG | No |
| 6+2 pin PCIe (650mm) | 3 | 3 | 16-18AWG | No |
| 12+4 pin PCIe (645mm) (600W) | 1 | 1 | 16-24AWG | No |
| SATA (500mm+145mm+145mm+145mm) | 3 | 12 | 18AWG | No |
| 4-pin Molex (500mm+145mm+145mm+145mm) | 1 | 4 | 18AWG | No |
| AC Power Cord (1415mm) - C13 coupler | 1 | 1 | 14AWG | - |
| Over Power Protection | ✓ |
| Over Current (+12V) Protection | ✓ |
| Over Temperature Protection | ✓ |
| Short Circuit Protection | ✓ |
| Surge Protection | ✓ |
| Inrush Current Protection | ✓ |
| Fan Failure Protection | ✓ |
F.1 General Statement
Measurement uncertainty associated with the reported results was evaluated and estimated in accordance with JCGM 100:2008 (Guide to the Expression of Uncertainty in Measurement — GUM) and ISO/IEC 17025:2017, Clauses 7.6 and 7.2.
The uncertainty budget accounts for all significant identified contributors arising from the measurement process, instrumentation, test conditions, and operator interaction.
The reported expanded uncertainty U is obtained by multiplying the combined standard uncertainty uc by a coverage factor k = 2, corresponding to a confidence level of approximately 95 %, assuming a normal probability distribution.
Unless otherwise stated, the reported uncertainty applies only to the specific measurements performed and does not include long-term drift, aging effects, or future environmental changes.
F.2 Expanded Measurement Uncertainty by Measurement Type
| Measurement | Expanded Uncertainty U (k=2, norm) |
| Efficiency | ±0.43% |
| Timings | ±2.64ms |
| Power Excursions (Transient Response) | ±0.18V |
| Conducted EMI Emissions (150 kHz – 30 MHz) | ±2.35 dB |
| Noise Output | ±1.23 dB |