Auotac 850W Fully Modular Power Supply, 80+ Gold vs Rosewill VSB 650W 80+ Bronze, ATX 3.0 & 3.1

Price Comparison

When it comes to pricing, the Rosewill VSB 650W is about 37% cheaper than the Auotac 850W, retailing for $49.98 compared to Auotac's $79.99. This significant price difference makes the Rosewill a more budget-friendly option for those looking to save on power supply costs without sacrificing quality. While the Auotac offers a higher wattage and a gold certification, the Rosewill provides adequate power for mid-range builds at a lower price point.

Power Output and Efficiency

The Auotac 850W clearly leads in terms of power output, offering 850 watts versus the Rosewill’s 650 watts. This higher wattage is particularly beneficial for users with high-performance components or multiple GPUs. Additionally, the Auotac boasts an 80 PLUS Gold certification, ensuring up to 92% efficiency, while the Rosewill is certified as 80 PLUS Bronze. Although both supplies support ATX 3.0 and 3.1, the Auotac's higher efficiency rating can mean lower electricity bills over time.

Modular Design

In terms of modularity, the Auotac features a fully modular design, allowing users to connect only the cables they need. This not only simplifies cable management but also enhances airflow within the case. On the other hand, the Rosewill is semi-modular, meaning some cables are hardwired, which may lead to a messier setup. While both designs have their advantages, the fully modular nature of the Auotac is generally preferred for high-performance builds where aesthetics and airflow are priorities.

Cooling Solutions

The cooling capabilities of both power supplies are noteworthy, but they employ different technologies. The Auotac features a 140mm RGB low-noise smart fan, designed to offer efficient cooling while minimizing noise. This fan outperforms standard 120mm fans in terms of heat dissipation and durability. Conversely, the Rosewill employs a 120mm ICB silent fan, which is optimized for thermal control but may not achieve the same cooling efficiency as the Auotac's larger fan. If cooling performance is a primary concern, the Auotac has the upper hand.

Component Quality

Component quality is critical in power supplies, and the Auotac uses 105°C-rated Japanese capacitors, known for their reliability and performance. This ensures stability during demanding operations, making it ideal for gamers and professionals. The Rosewill also employs Japanese capacitors rated for 105°C, but its overall certification is Bronze rather than Gold. This distinction may affect long-term performance and reliability, particularly in high-stress environments.

Cable Compatibility

When it comes to cable compatibility, both power supplies support the latest PCIe 5.1 standard. The Auotac features a dual-color 12V-2x6 PCI-E 5.1 cable, which allows users to easily verify proper connections. The Rosewill also includes a native PCIe 5.1 cable that delivers direct power to new graphics cards. Although both units are equipped for next-generation GPU support, the usability enhancements of the Auotac's dual-color cable may offer a more user-friendly experience.

Warranty and Support

The warranty period is another critical factor for consideration. The Auotac comes with a 10-year limited warranty, ensuring peace of mind for long-term use. In contrast, the Rosewill offers a 5-year warranty, which, while decent, is significantly shorter. The extended warranty of the Auotac reflects greater confidence in its durability and reliability, making it potentially a better investment for users who plan to keep their systems for years.

Which should you buy?

Choosing between the Auotac 850W and the Rosewill VSB 650W ultimately depends on your specific needs and budget. If you require higher power output, efficiency, and a fully modular design, the Auotac is the better option despite its higher price. Conversely, if you are looking for a cost-effective solution for a mid-range build, the Rosewill offers solid performance at a significantly lower price. Ultimately, both power supplies have their strengths, but the Auotac seems to provide better overall value for high-performance users.