Description
The SilverStone Attis series, including the 650R, 750R, and 850R models, is engineered to meet the rigorous ATX 3.1 specifications, ensuring compatibility with the latest hardware power requirements. Featuring an 80 PLUS Bronze certification, these units deliver up to 85% efficiency under typical loads. The internal architecture utilizes a dual-forward DC-to-DC design and high-quality Japanese primary capacitors to maintain voltage stability and ripple suppression. With a compact 140mm depth, these ATX power supplies fit easily into most chassis while providing ample power for mid-to-high-range GPUs.
This product is for:
- Budget-Conscious Gamers: Ideal for those building mid-range gaming rigs who need ATX 3.1 compliance for modern GPU spikes without the premium price of Gold-rated units.
- System Integrators: The 140mm depth and flat black cables make it a preferred choice for clean, efficient cable management in standard ATX builds.
- Workstation Users: Reliable 24/7 operation at 50°C ambient temperatures ensures stability for long-duration rendering or computational tasks.
- White-Themed Build Enthusiasts: The SST-AT650R-BF-WBW variant offers a clean white aesthetic for color-coordinated setups.
- Silent PC Builders: The 120mm fan operates at a minimum of 18dBA, keeping noise levels low during idle or light productivity work.
Detailed specifications:
- Form Factor: ATX (PS2)
- Efficiency: 80 PLUS Bronze (82% - 85% at 20% - 100% load)
- Compliance: ATX 3.1 (Supports up to 2x power excursion)
- Cooling: 120mm silent fan (Minimum 18 dBA)
- Capacitors: Japanese primary electrolytic capacitors
- Protection: Over Load (OPP), Over Voltage (OVP), Short Circuit (SCP), Under Voltage (UVP)
- Dimensions: 150mm (W) x 86mm (H) x 140mm (D)
- MTBF: 100,000 hours
- Operating Temperature: 0°C to 50°C
Installing the SilverStone Attis series is straightforward due to the flexible flat cable design, which reduces clutter and improves airflow within the case. During high-load gaming sessions, the DC-to-DC circuitry ensures that the 12V rail remains stable, preventing system crashes during sudden power draws. The 850R model specifically includes the 12V-2x6 connector, making it a future-proof choice for high-end graphics cards. The unit remains remarkably quiet under standard operation, with the 120mm fan only ramping up when necessary to maintain the 50°C thermal threshold.
Compared to standard 80 PLUS White or non-ATX 3.1 power supplies, the Attis series offers significantly better transient response and safety margins for modern hardware. While 80 PLUS Gold units provide higher efficiency, the Attis series focuses on the essential ATX 3.1 power excursion capabilities, making it a more economical choice for users who prioritize stability over marginal energy savings. Its 140mm depth is also more compatible with compact ATX cases than many high-wattage modular units that often exceed 160mm.
Q&A:
- Does the SilverStone Attis support the latest NVIDIA 40-series GPUs? Yes, the 850R model includes a dedicated 12V-2x6 connector, while the 650R and 750R support them via standard PCIe connectors or adapters.
- What is the benefit of ATX 3.1 in a Bronze power supply? ATX 3.1 ensures the unit can handle momentary power spikes up to 200% of its rated capacity, preventing unexpected shutdowns during intensive gaming.
- Are the cables modular? No, the Attis series uses a fixed, flat cable design to maintain a compact form factor and cost-effectiveness.
- Can this PSU run 24/7? Yes, it is rated for continuous full-load operation at ambient temperatures up to 50°C.
- What is the noise level of the fan? The 120mm fan starts at a minimum of 18dBA, providing near-silent operation during low-to-medium power consumption.
