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Reference: ST3450857SS
Brand: Seagate
ST3450857SS _ RFB
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IW-PS-PFII850W
850W, ATX 12V 3.0, Active PFC (> 0.95), 80 PLUS Gold, 100,000hrs, 25dBA, 1 x 24 Pin Motherboard, 2 x 8 (4+4) Pin CPU, 4 x 8 (6+2) Pin PCI-E, 1x PCI-E 5.0 12VHPWR 450W, 3 x 4 Pin Peripheral, 6 x SATA, 1 x Floppy, Black, 2.3kg
Description
New PFII Series born for ATX3.0
The PFII Series ATX 3.0 fully meets the newest generation of Intel’s PSDG (power supply design guide). This avoids potential system instability or power failure, provides better output stability, and allow users to game or work with peace of mind.
PCI-E Gen 5.0 Ready
Includes PCI-E 5.0, 16-pin connector (12VHPWR) with high-quality 16AWG cable. Exclusive for next-generation high-performance graphics cards. Fully unleash your GPU’s powerful performance!
Meet various GPU
The PFII Series contains flat cables, which not only facilitates cable management, but also provides sufficient PCIe cables to meet various GPU connectors
80 PLUS® Gold Certified for High Efficiency
The PFII Series ATX 3.0 is an 80 PLUS® Gold certified power supply that delivers up to 90% conversion efficiency which can generate less heat, effectively lowering energy consumption and noise.
Multi-Protection Safeguards
The PFII Series ATX 3.0 comes with plenty of safeguards against over-currents, over-and-under voltages, short circuits, over-heating and over-power. These precautions are to ensure quality and safe power usage.
Single +12V Rail / 5V and 3.3V DC to DC Design
Powerful single +12V rail design supplies strong and reliable energy to high-performing components. Equipped with 5V and 3.3V DC to DC converter design, the PFII Series ATX 3.0 provides a superior dynamic response, and supports a foundation for greater system stability.
Smart Thermal Control to Balance Cooling and Noise Pollution
The PFII Series ATX 3.0 utilizes a smart temperature-controlled fan design. It automatically detects the heat to adjust the fan speed accordingly. It achieves the optimal balance between silent operation and excellent thermal performance.
The PFII Series ATX 3.0 fully meets the newest generation of Intel’s PSDG (power supply design guide). This avoids potential system instability or power failure, provides better output stability, and allow users to game or work with peace of mind.
PCI-E Gen 5.0 Ready
Includes PCI-E 5.0, 16-pin connector (12VHPWR) with high-quality 16AWG cable. Exclusive for next-generation high-performance graphics cards. Fully unleash your GPU’s powerful performance!
Meet various GPU
The PFII Series contains flat cables, which not only facilitates cable management, but also provides sufficient PCIe cables to meet various GPU connectors
80 PLUS® Gold Certified for High Efficiency
The PFII Series ATX 3.0 is an 80 PLUS® Gold certified power supply that delivers up to 90% conversion efficiency which can generate less heat, effectively lowering energy consumption and noise.
Multi-Protection Safeguards
The PFII Series ATX 3.0 comes with plenty of safeguards against over-currents, over-and-under voltages, short circuits, over-heating and over-power. These precautions are to ensure quality and safe power usage.
Single +12V Rail / 5V and 3.3V DC to DC Design
Powerful single +12V rail design supplies strong and reliable energy to high-performing components. Equipped with 5V and 3.3V DC to DC converter design, the PFII Series ATX 3.0 provides a superior dynamic response, and supports a foundation for greater system stability.
Smart Thermal Control to Balance Cooling and Noise Pollution
The PFII Series ATX 3.0 utilizes a smart temperature-controlled fan design. It automatically detects the heat to adjust the fan speed accordingly. It achieves the optimal balance between silent operation and excellent thermal performance.
Specifications
Certificates
| Certification | cTUVus / TUV / CB / BSMI / CE / FCC / EAC / RCM / UACK |
| Compliance certificates | BSMI/CB/CE/cTUVus/EAC/Federal Communications Commission (FCC) |
Design
| Built-in display | No |
| Cooling type | Active |
| Fan diameter | 12 cm |
| Number of fans | 1 fan(s) |
| On/off switch | Yes |
| Product colour | Black |
Logistics data
| Warranty period | 5 year(s) |
Operational conditions
| Operating temperature (T-T) | 0 - 40 °C |
Packaging content
| Cable tie(s) included | Yes |
Performance
| 80 PLUS certification | 80 PLUS Gold |
| ATX version | 3.0 |
| Bearing technology | Sleeve |
| Mean time between failures (MTBF) | 100000 h |
| Noise level | 25 dB |
| Power supply unit (PSU) form factor | ATX |
| Purpose | PC |
| Supported motherboard form factors | ATX |
Ports & interfaces
| ATX Power connector (24-pin) | Yes |
| Cabling type | Non-Modular |
| CPU power cable length | 60 cm |
| CPU power connector (4+4 pin) | Yes |
| Floppy disk drive cable length | 40 cm |
| Floppy disk drive connector | Yes |
| Floppy drive power connector | 1 |
| Motherboard power cable length | 50 cm |
| Motherboard power connector | 24-pin ATX |
| Number of SATA power connectors | 6 |
| PCI Express connector | Yes |
| PCI Express power cable length | 60 cm |
| PCI Express power connectors (6+2 pin) | 4 |
| Peripheral (Molex) power cable length | 40 cm |
| Peripheral (Molex) power connectors (4-pin) | 3 |
| SATA power cable length | 70 cm |
Power
| AC input frequency | 50/60 Hz |
| AC input voltage | 100 - 240 V |
| Combined power (-12V) | 3.6 W |
| Combined power (+12V) | 850 W |
| Combined power (+3.3V) | 100 W |
| Combined power (+5V) | 100 W |
| Combined power (+5Vsb) | 15 W |
| Efficiency | 90 % |
| Hold time | 100 ms |
| Input current | 12-6 A |
| Max output current (-12V) | 0.3 A |
| Max output current (+12V) | 70.8 A |
| Max output current (+3.3V) | 20 A |
| Max output current (+5V) | 20 A |
| Max output current (+5Vsb) | 3 A |
| Maximum input current (@110V) | 12 A |
| Maximum input current (@220V) | 6 A |
| Power factor | 0.95 |
| Power Factor Correction (PFC) type | Active |
| Power protection features | Over current/Over power/Over voltage/Overheating/Short circuit/Under voltage |
| Total power | 850 W |
Technical details
| Sustainability compliance | Yes |
Vendor information
| Brand Name | In Win |
| Warranty | 1 |
Product Details
2026-07-27
New
Data sheet
- Hold time
- 100 ms
- Cable tie(s) included
- Yes
- ATX version
- 3.0
- Floppy disk drive cable length
- 40 cm
- Anzahl Fans
- 1 Lüfter
- Ein / Aus Schalter
- Yes
- Mean time between failures (MTBF)
- 100000 h
- Compliance certificates
- BSMI/CB/CE/cTUVus/EAC/Federal Communications Commission (FCC)
- Kühltyp
- Active
- Geräuschpegel
- 25 dB
- Leistungsschutzfunktionen
- Over current/Over power/Over voltage/Overheating/Short circuit/Under voltage
- Zertifizierung
- cTUVus / TUV / CB / BSMI / CE / FCC / EAC / RCM / UACK
- AC-Eingangsfrequenz
- 50/60 Hz
- AC-Eingangsspannung
- 100 - 240 V
- Nachhaltigkeitskonformität
- Yes
- Verkabelungstyp
- Non-Modular
- Totale Kraft
- 850 W
- Typ mit Leistungsfaktorkorrektur (PFC)
- Active
- Eingangsstrom
- 12-6 A
- Max. Ausgangsstrom (+12 V)
- 70.8 A
- Max. Ausgangsstrom (+3,3 V)
- 20 A
- Max. Ausgangsstrom (+5 V)
- 20 A
- Maximaler Ausgangsstrom (-12 V)
- 0.3 A
- Netzteil-Formfaktor (PSU)
- ATX
- Effizienz
- 90 %
- Lüfterdurchmesser
- 12 cm
- Motherboard-Stromanschluss
- 24-pin ATX
- 80 PLUS-Zertifizierung
- 80 PLUS Gold
- Maximum Eingangsstrom (@110V)
- 12 A
- Maximum Eingangsstrom (@220V)
- 6 A
- Max. Ausgangsstrom (+5 Vsb)
- 3 A
- Eingebautes Display
- No
- Anschluss für Diskettenlaufwerk
- Yes
- Anzahl der SATA-Stromanschlüsse
- 6
- Peripherie (Molex) Stromanschlüsse (4-polig)
- 3
- Leistungsfaktor
- 0.95
- Brand Name
- In Win
- Warranty
- 1
- Betriebstemperatur (TT)
- 0 - 40 °C
- Zweck
- PC
- Produktfarbe
- Black
- Lagertechnik
- Sleeve
- CPU-Stromanschluss (4+4-polig)
- Yes
- Länge des CPU-Stromkabels
- 60 cm
- Länge des Motherboard-Stromkabels
- 50 cm
- Länge des Peripherie-Stromkabels (Molex)
- 40 cm
- Länge des SATA-Stromkabels
- 70 cm
- PCI-Express-Stromanschlüsse (6+2-polig)
- 4
- Kombinierte Leistung (-12 V)
- 3.6 W
- Kombinierte Leistung (+3,3 V)
- 100 W
- Kombinierte Leistung (+5V)
- 100 W
- Kombinierte Leistung (+5Vsb)
- 15 W
- Kombinierte Stromversorgung (+12 V)
- 850 W
- Unterstützte Motherboard-Formfaktoren
- ATX
- ATX-Stromanschluss (24-polig)
- Yes
- Warranty period
- 5 Jahr(e)
- Länge des PCI-Express-Stromkabels
- 60 cm
- PCI-Express-Anschluss
- Yes
- Stromanschluss des Diskettenlaufwerks
- 1
Specific References
- MPN
- IW-PS-PFII850W
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850W, ATX 12V 3.0, Active PFC (> 0.95), 80 PLUS Gold, 100,000hrs, 25dBA, 1 x 24 Pin Motherboard, 2 x 8 (4+4) Pin CPU, 4 x 8 (6+2) Pin PCI-E, 1x PCI-E 5.0 12VHPWR 450W, 3 x 4 Pin Peripheral, 6 x SATA, 1 x Floppy, Black, 2.3kg