ASUS Prime 850W Gold PSU - ATX 3.1, 80 Plus Gold
ASUS
ASUS Prime 850W Gold PSU - ATX 3.1, 80 Plus Gold
The ASUS Prime 850W Gold PSU is a fully modular ATX 3.1 power supply suited to builders of high-performance workstations, gaming rigs, and all-round desktop PCs who want efficient, long-lasting power delivery backed by an extended warranty. It carries 80 Plus Gold certification for up to 92% efficiency and ships with a 16-pin PCIe cable compatible with PCIe Gen 5.1 graphics cards. A two-tone black-and-white housing lets you orient the unit to match either a light or dark build theme.
Why this product
80 Plus Gold: up to 92% efficiency
Low-ESR capacitors earn it 80 Plus Gold certification, meaning less heat is wasted, fan noise stays lower, and long-term reliability improves.
ATX 3.1 ready with PCIe Gen 5.1 cable
Full ATX 3.1 compliance meets tighter voltage and current regulation requirements for next-generation hardware, and the bundled 16-pin cable supports PCIe Gen 5.1 graphics cards.
Dual ball bearings rated to 80,000 hours
Dual ball fan bearings last roughly twice as long as sleeve bearing designs and outlast fluid dynamic bearings too, keeping the unit cool with minimal noise over its lifetime.
8-year warranty included
ASUS backs this unit with an 8-year warranty, one of the longer coverage periods available on a mainstream Gold-rated power supply.
Six protection circuits built in
Over-power, over-voltage, under-voltage, short-circuit, over-current, and over-temperature protections (OPP/OVP/UVP/SCP/OCP/OTP) are all active to safeguard connected components.
Two-tone housing for flexible aesthetics
Two sides are painted white and two sides are painted black, so you can orient the PSU to suit a light or dark build without any extra cost.
- Wattage850 W
- Efficiency Rating80 Plus Gold (up to 92%)
- ATX StandardATX 3.1
- PCIe Connector16-pin (PCIe Gen 5.1 compatible)
- Fan Bearing TypeDual ball bearing (80,000 hrs rated)
- Warranty8 years
- Dimensions150 × 150 × 86 mm
- Weight1.502 kg
- SKUASU-2490
- EAN4711636288194
- Compliant with ATX 3.1 and ATX12V form-factor specifications.
- Bundled 16-pin PCIe cable is compatible with PCIe Gen 5.1 graphics cards.
- Accepts universal AC input from 100 V to 240 V, covering most regional mains standards.
- Provides two CPU 4+4-pin connectors, suiting motherboards with dual EPS power headers.
- No AURA SYNC RGB header — builders who want addressable RGB lighting on the PSU itself will need to source that elsewhere.
- Does not feature 0 dB fan-stop technology; the fan runs continuously rather than stopping under light loads.
Best for
- High-performance gaming and workstation builds that need a stable 850 W output with ATX 3.1 compliance and a PCIe Gen 5.1-ready cable.
- Long-term builders who value the 8-year warranty and dual ball bearings rated to 80,000 hours — reducing the likelihood of an unplanned replacement.
- Efficiency-conscious builders whose systems run under sustained load and benefit from up to 92% efficiency, producing less waste heat and lower running costs.
- Builders wanting build flexibility — the two-tone housing can be oriented to face either the white or black side outward, fitting both light and dark case themes.
- Component-safety-focused builders who want six independent hardware protection circuits (OPP, OVP, UVP, SCP, OCP, OTP) guarding their hardware.
Trade-offs
- RGB enthusiasts who want a lighting-synchronised PSU — it carries no AURA SYNC or addressable RGB support.
- Silent-running or near-silent builds where fan-stop under light load is a requirement — this unit has no 0 dB technology and the fan does not stop.
- Very high-wattage flagship builds with multi-GPU or extreme overclocking demands beyond 850 W total output.
- Small form-factor or SFX cases — at 150 × 150 × 86 mm this is a standard ATX unit and will not fit SFX or SFX-L enclosures.
With 80+ Gold certification, dual ball fan bearings, and an 8-year warranty, the ASUS Prime series PSU brings efficient and durable power delivery to high-performance workstations, all-round PCs, and gaming rigs.
Dual Ball Fan Bearings
Dual ball bearings boast a remarkable lifespan of 80,000 hours, lasting twice as long as sleeve bearings and exceeding even fluid dynamic bearings. Ensuring long-lasting, reliable cooling with minimal noise for ASUS Prime Gold series.
80 Plus Gold Certification
The ASUS Prime 850W Gold PSU features efficient, low-ESR capacitors to ensure efficient operation — affording it 80 PLUS® Gold status. This means it delivers up to 92% efficiency, resulting in less heat, reduced fan noise, and increased reliability.
ATX 3.1 Compatible
The latest power specification updates have landed. ATX 3.1 ushers in tighter voltage and current regulation guidelines for next-gen hardware - and ASUS Prime 850W Gold steps ahead of the curve by being fully compliant. A 16-pin PCIe cable that is compatible with PCIe Gen 5.1 graphics cards is bundled with the PSU, bringing large-scale capabilities.
Choose Your Style
Two sides of the housing are painted white, and two sides are painted black, allowing you to orient the PSU to match your preferred build theme.
General
| Brand | ASUS |
|---|---|
| Model | AP-850G |
| Form Factor | ATX12V |
| ATX Standard | ATX 3.1 |
| Dimensions | 150 × 150 × 86 mm |
| Weight | 1.502 kg |
Power & Efficiency
| Total Output | 850 W |
|---|---|
| 80 Plus Rating | 80 Plus Gold |
| Efficiency | Up to 92% |
| PFC Type | Active PFC |
| AC Input Range | 100–240 Vac |
| DC Output Voltages | +3.3 V, +5 V, +12 V, −12 V, +5 Vsb |
| Maximum Load | 20 A / 20 A / 70.5 A / 0.3 A / 2.5 A |
| Combined Load | 110 W / 110 W / 846 W / 3.6 W / 12.5 W |
Connectors & Cabling
| Motherboard Connector | 24/20-pin × 1 |
|---|---|
| CPU Connectors | 4+4-pin × 2 |
| PCIe 16-pin Connector | × 1 (PSU side and connector side) |
| PCIe 8-pin Connectors | × 3 |
| SATA Connectors | × 5 |
| Peripheral Connectors | × 3 |
Reliability & Protection
| Fan Bearing Type | Dual ball bearing |
|---|---|
| Fan Bearing Lifespan | 80,000 hours |
| MTBF | >120,000 hrs @ 25 °C |
| Protection Features | OPP / OVP / UVP / SCP / OCP / OTP |
| Warranty | 8 years |
| RoHS Compliant | Yes |
| AURA SYNC | No |
| 0 dB Technology | No |
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.