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Silverstone Technology
Silverstone Technology EX850R-PM 850 W SFX power supply
A fully modular SFX power supply delivering 850 W with Cybenetics Platinum efficiency and a 12VHPWR connector for modern graphics cards
- ColorBlack
- TypeSFX12V
- Maximum Power850 W
- Fans1 x 92 mm
- PFCActive
- Max PSU Length125 mm
- Cybenetics Platinum certification delivers >=89% &
- Gen5 12VHPWR connector meets Intel SFX 12V V4.0 specification
- 850 W continuous output at 50°C operating temperature
- 92 mm FDB fan with intelligent deactivation for 0 dBA minimum noise
- Fully modular flat cables enable tighter folding in compact builds
SFX12V 4.0 850 W power supply
This SFX12V 4.0 unit delivers 850 W in a compact form factor. It targets small-form-factor builders who need high output for modern GPUs. The fully modular design uses flexible flat cables for tight routing. All Japanese electrolytic capacitors support long-term reliability.
SFX12V 4.0 interface limits
The SFX12V 4.0 standard defines the physical envelope and the 12VHPWR connector pinout. Input voltage must sit between 180 and 264 V at 47 to 63 Hz. Overall efficiency is rated between 89 and 91 percent under Cybenetics Platinum. The 92 mm FDB fan can stop at low load for 0 dBA minimum noise.
12VHPWR connector decides fit
A single 12VHPWR 12+4 pin connector is the only Gen5 PCIe 5.0 power interface on this unit. If the graphics card requires that connector, this supply matches; if it uses legacy 6+2 pin only, the extra adapter adds bulk. No other specification overrides this connector requirement.
Points forts
- Cybenetics Platinum certification delivers >=89% &
- Gen5 12VHPWR connector meets Intel SFX 12V V4.0 specification
- 850 W continuous output at 50°C operating temperature
- 92 mm FDB fan with intelligent deactivation for 0 dBA minimum noise
- Fully modular flat cables enable tighter folding in compact builds
Caractéristiques
| Brand | SilverStone |
|---|---|
| Model | Extreme 850R Platinum |
| Part Number | EX850R-PM |
| Color | Black |
| Type | SFX12V |
| Maximum Power | 850 W |
| Fans | 1 x 92 mm |
| PFC | Active |
| Max PSU Length | 125 mm |
| Modular | Full Modular |
| Efficiency | >= 89% & <91% overall efficiency |
| Energy-Efficient | Cybenetics Platinum |
| Protection | Over Current Protection Over Power Protection Over Voltage Protection Short Circuit Protection Under Voltage Protection Over Temperature Protection No load operation |
| Input Voltage | 180 - 264 V |
| Input Frequency Range | 47 - 63 Hz |
| MTBF | 100,000 Hours |
| Connectors | 1 x 12VHPWR (12+4) PCIe / 1 x 24 pin (20+4) ATX / 1 x 8 pin (4+4) EPS (CPU) / 1 x Floppy / 2 x 8 pin (6+2) PCIe / 3 x 4 pin Peripheral / 8 x SATA |
| Dimensions | 125 x 63.5 x 100 mm |
| Weight | 3.53 lbs. |
| Poids d’expédition | 2.27 kg |
| Dimensions du colis | 25 × 25 × 25 mm |
Questions sur cet article
Will this SFX unit fit in a case that only accepts standard SFX dimensions?
The housing measures 125 x 63.5 x 100 mm, matching the SFX form factor, so it fits any chassis designed for that size.
Can I power a modern graphics card that requires the 12VHPWR connector without an adapter?
Yes, the supply includes a native 12+4 pin 12VHPWR cable that meets the Intel SFX 12V V4.0 specification.
Is the fan completely silent at low loads?
The 92 mm FDB fan can deactivate entirely, delivering 0 dBA minimum noise until the internal temperature rises enough to require active cooling.
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