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Silverstone Technology
Silverstone Technology ST85F-GS-V2 850W ATX fully modular power supply
An 850W ATX fully modular power supply with a single 70.9A +12V rail, 80 PLUS Gold efficiency, a silent 120mm fan at 18dBA and 140mm depth
- ColorBlack
- TypeATX
- Maximum Power850 W
- FansSingle 120mm silent fan
- PFCActive
- Main Connector24Pin
- 850 W output powers demanding builds
- Single +12 V rail delivers 70.9 A for stable GPU loads
- 80 PLUS Gold certified efficiency between 87 % and 90 % reduces heat
- Fully modular cables simplify routing and case airflow
- 120 mm silent fan runs at 18 dBA for quiet operation
Power for demanding builds
The ST85F-GS-V2 delivers 850 W of continuous output from a single +12 V rail rated at 70.9 A. It is built for systems that need stable power for high-end graphics cards and overclocked processors. The 80 PLUS Gold certification confirms efficiency between 87 % and 90 % across the 20 % to 100 % load range. A 120 mm silent fan keeps noise around 18 dBA during typical operation.
Compact fully modular design
At 140 mm deep the unit fits cases where longer power supplies would block drive bays or radiators. Full modular cabling lets you connect only the leads you need, and the flat 24-pin cable folds tightly for clean routing. Six 8-pin or 6-pin PCIe connectors support multi-GPU configurations. Protection circuits cover over voltage, over current, over power, under voltage, over temperature and short circuit events.
ATX interface practical limits
The PSU accepts 90 V to 264 V at 47 Hz to 63 Hz, so it works on mains supplies worldwide without a voltage switch. MTBF is rated at 100000 hours at 40 °C ambient temperature. Voltage regulation stays within 2.5 % on the V2.0 revision, with low ripple and noise for stable rails. The 140 mm depth and ATX form factor define the physical space you must allocate in the chassis.
Highlights
- 850 W output powers demanding builds
- Single +12 V rail delivers 70.9 A for stable GPU loads
- 80 PLUS Gold certified efficiency between 87 % and 90 % reduces heat
- Fully modular cables simplify routing and case airflow
- 120 mm silent fan runs at 18 dBA for quiet operation
Specifications
| Brand | SilverStone |
|---|---|
| Model | SST-ST85F-GS |
| Color | Black |
| Type | ATX |
| Maximum Power | 850 W |
| Fans | Single 120mm silent fan |
| PFC | Active |
| Main Connector | 24Pin |
| +12V Rails | Single |
| Max PSU Length | 140 mm |
| Modular | Full Modular |
| Efficiency | 87%~90% at 20%~100% loading |
| Energy-Efficient | 80 PLUS GOLD Certified |
| Over Voltage Protection | Yes |
| Overload Protection | Yes |
| Protection | Over current protection Over power protection Over voltage protection Over temperature protection Under voltage protection Short circuit protection |
| Input Voltage | 90V~264V |
| Input Frequency Range | 47Hz ~ 63Hz |
| MTBF | 100,000 hours |
| Shipping weight | 1.55 kg |
| Package size | 320 × 212 × 135 mm |
Questions about this item
Will this 850W unit fit in a compact case with limited PSU clearance?
The housing is 140mm deep, shorter than many 850W designs, so it suits smaller enclosures where space behind the motherboard tray is tight.
Can I power a high-end graphics card that needs multiple 8-pin connectors?
Six 6/8-pin PCIe cables are included, enough for most modern GPUs, and the single +12V rail delivers 70.9A for stable current under heavy load.
How loud is the fan at typical desktop loads?
The 120mm fan is rated at 18dBA, which is near-silent in a quiet room and stays low until the unit approaches higher output levels.
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