ASUS ROG Strix 850W Platinum PSU - ATX 3.1, GaN MOSFET
ASUS ROG
ASUS ROG Strix 850W Platinum PSU - ATX 3.1, GaN MOSFET
The ASUS ROG Strix 850W Platinum PSU - ATX 3.1, GaN MOSFET is a fully modular power supply built for high-end gaming rigs that demand stable, efficient power delivery with low noise. It suits builders pairing powerful graphics cards with modern platforms who want long-term reliability and quiet operation. The GaN MOSFET design and intelligent voltage stabilizer target both thermal efficiency and GPU power stability specifically.
Why this product
GaN MOSFET for up to 30% better efficiency
Next-generation GaN MOSFET technology improves power efficiency by up to 30% over conventional designs and allows a more organised internal layout that runs cooler.
GPU-FIRST voltage sensing stabilises graphics card power
A patented intelligent voltage stabiliser prioritises the graphics card rail, enhancing voltage delivery by up to 45% for consistent performance under heavy GPU load.
80 PLUS and Cybenetics Platinum certified
Certified at 92% efficiency at 50% load and 89% at 100% load using low-ESR Japanese capacitors, reducing heat and fan noise compared to lower-rated units.
Near-silent operation with Lambda A noise certification
0dB technology keeps the fan off during light loads, and Lambda A certification confirms noise levels below 25 dB when the fan does spin.
ATX 3.1 compliant with native 12V-2x6 connector
Full ATX 3.1 compliance and a native 12V-2x6 PCIe connector mean it is ready for current and next-generation graphics cards without adapters.
10-year warranty and dual ball bearing fan
The included 10-year warranty and dual ball bearing fan — rated to last up to twice as long as sleeve bearing designs — reflect a long service-life focus.
- Total Output850W
- Efficiency Rating80 PLUS Platinum / Cybenetics Platinum
- ATX StandardATX 3.1
- GPU ConnectorNative 12V-2x6 (PCIe Gen 5.1)
- Noise CertificationLambda A — below 25 dB
- Warranty10 years
- Dimensions160 x 150 x 86 mm
- Weight1.78 kg
- SKUASU-2293
- EAN4711387594520
- Compatible with ATX 3.1 motherboards and cases accepting standard ATX PSU dimensions (160 x 150 x 86 mm).
- Native 12V-2x6 connector supports PCIe Gen 5.1 graphics cards at up to 600W via the bundled 16-pin cable.
- Accepts AC input from 100–240 V, making it compatible with mains power in most countries.
- Provides CPU 4+4-pin x 2, suitable for high-TDP processors requiring dual EPS connectors.
- AURA SYNC RGB is not supported — the unit does not feature addressable RGB lighting integration.
- Total output is 850W; verify your system's peak power draw before purchase if running multiple high-TDP components simultaneously.
Best for
- High-end single-GPU gaming builds — the GPU-FIRST voltage stabiliser and native 12V-2x6 connector are designed specifically for demanding discrete graphics cards.
- Builders prioritising quiet operation — 0dB fan mode during light loads and Lambda A certification (below 25 dB) make it well-suited to noise-sensitive environments.
- Long-term system builders — the 10-year warranty and dual ball bearing fan (rated up to twice the lifespan of sleeve bearing designs) reduce the likelihood of needing a replacement for years.
- Builders targeting ATX 3.1 platforms — full ATX 3.1 compliance ensures it meets the voltage regulation and transient load requirements of current-generation hardware.
- Efficiency-focused builds — 80 PLUS Platinum and Cybenetics Platinum dual certification delivers measurably lower heat output and running costs compared to Gold or lower-rated units.
Trade-offs
- Multi-GPU or dual-system configurations — total output is 850W; workloads combining multiple high-TDP GPUs or CPUs may exceed this ceiling.
- RGB-centric builds requiring AURA SYNC — AURA SYNC is explicitly not supported, so it will not synchronise lighting with other ROG components.
- Builds needing more than three 6+2-pin PCIe connectors natively — the connector count (PCIe 6+2-pin x 3, plus the 16-pin) may require daisy-chaining for systems with more than four discrete power connectors.
- Ultra-compact ITX cases — at 160 x 150 x 86 mm this is a full-depth ATX unit and will not fit cases designed for SFX or SFX-L form factors.
ROG Strix 850W Platinum is a cool and quiet PSU with stable power delivery, engineered for efficiency with GaN MOSFET and intelligent stabilizer in striking style.
Superior Stability. Next-Level Efficiency
The ROG Strix Platinum PSU delivers the top-tier performance and unwavering stability demanded by gamers. Featuring next-gen GaN MOSFET for superior power efficiency. The Intelligent Voltage Stabilizer ensures a steady flow of power to the graphics card. Plus, it is ready for latest hardwares with ATX 3.1 compliance and a native 12V-2x6 connector. The ROG Strix Platinum Series ensures your high-end rig has the power to conquer any challenge.
- GaN MOSFET delivers superior power efficiency by up to 30% and a more organized internal layout for cooler operation.
- "GPU-FIRST" voltage sensing with patented-intelligent voltage stabilizer enhances voltage delivery by up to 45% to your graphics card for smoother gameplay and unwavering performance.
- Large ROG heatsinks cover critical components, delivering lower temperatures and noise than reference designs.
- Dual ball fan bearings can last up to twice as long as sleeve bearing designs.
- 0dB technology lets you enjoy light gaming in relative silence.
- ATX 3.1 compatible: ROG Strix Platinum is compliant with ATX 3.1 standard, ensuring enhanced voltage and current regulation.
- PCIe 5.1 Ready: ROG Strix Platinum features a native 12V-2x6 connector for next-gen graphics card power.
- Lambda A Certification Certified low noise levels, below 25 dB.
- 80 PLUS & Cybenetics Platinum certified: ROG Strix Platinum leverages low-ESR capacitors and premium components for industry-leading power efficiency.
- 10-year warranty included.
ENGINEERING
- GaN MOSFET
- Intelligent Voltage Stabilizer
- High-performance Copper Pins
- ATX 3.1 Compatible
- 80 PLUS Platinum Cybenetics Platinum
- Lambda A Certification
High-performance Copper Pins
Upgraded PCIe® connectors featuring superior thermal conductivity ensure cooler operation and improved power delivery efficiency. This translates to a significant 29% reduction in connector temperatures (up to 12.28°C), promoting optimal performance and stability for even the most demanding graphics cards.
ATX 3.1 Compatible
A 16-pin PCIe cable ripe for piping up to 600W of power to PCIe Gen 5.1 graphics cards is bundled with the PSU, readying your build for the next-gen.
80 PLUS Platinum Certification
The ROG Strix 850W Platinum utilizes low-ESR Japanese capacitors to ensure efficient operation. These upgrades enable an 80 PLUS Platinum certification, which guarantees 89% efficiency at 100% load and 92% efficiency at 50% load. The increased efficiency results in less heat, reduces fan noise, and increases reliability.
General
| Brand | ASUS ROG |
|---|---|
| Form Factor | ATX12V |
| ATX Standard | ATX 3.1 |
| Total Output | 850W |
| Weight | 1.78 kg |
| Dimensions | 160 x 150 x 86 mm |
| Hazardous Materials | RoHS compliant |
Power & Efficiency
| Efficiency Certification | 80 PLUS Platinum |
|---|---|
| Cybenetics Certification | Platinum |
| AC Input Range | 100–240 Vac |
| PFC Type | Active PFC |
| DC Output Voltages | +3.3V, +5V, +12V, -12V, +5Vsb |
| Maximum Load | +3.3V: 25A, +5V: 25A, +12V: 70.8A, -12V: 0.3A, +5Vsb: 3A |
| Combined Load | +3.3V/+5V: 130W, +12V: 850W, -12V: 3.6W, +5Vsb: 15W |
| MTBF | >120,000 hrs @ 25°C |
Connectors
| Motherboard | 24/20-pin x 1 |
|---|---|
| CPU / EPS | 4+4-pin x 2 |
| PCIe 16-pin (12V-2x6) | x 1 (native, both PSU and component side) |
| PCIe 6+2-pin | x 3 |
| SATA | x 6 |
| Peripheral | x 3 |
Cooling, Noise & Protection
| Fan Bearing | Dual ball bearing |
|---|---|
| 0dB Mode | Yes — fan stops under light load |
| Noise Certification | Lambda A (below 25 dB) |
| Heatsink | Large ROG heatsinks on critical components |
| Protection Features | OPP, OVP, UVP, SCP, OCP, OTP |
| AURA SYNC | Not supported |
Shipping
All our products are shipped from the United Kingdom within 24 to 48 hours of purchase. See our Shipping and Returns page for full details.
Returns
- Tech Syndicate offers a full money-back guarantee on all purchases made in our store. If you are not satisfied with your purchase, we will provide a full refund, no questions asked.
- Refunds are available within 45 days of delivery.
- After the 45-day period you are no longer eligible for a refund, so we encourage you to try the product within the first few weeks to make sure it fits your needs.