CORSAIR RM850e vs SAMA B850 850W ATX Power Supply
Updated August 2026 — The CORSAIR RM850e excels in build quality and features, while the SAMA B850 offers a budget-friendly option. Choose based on your priorities.
The CORSAIR RM850e excels in build quality and features, while the SAMA B850 offers a budget-friendly option. Choose based on your priorities.
Why CORSAIR RM850e is better
Build Quality
RM850e features 105°C-rated capacitors for reliability.
Modular Design
Fully modular design simplifies cable management.
Cooling Solutions
Advanced fan design minimizes noise under load.
Why SAMA B850 850W ATX Power Supply is better
Price
SAMA B850 is significantly cheaper at C$74.99.
Warranty
SAMA B850 offers a 3-year warranty.
Efficiency Certification
80 PLUS Bronze certification for decent efficiency.
Overall score
Specifications
| Spec | CORSAIR RM850e | SAMA B850 850W ATX Power Supply |
|---|---|---|
| Brand | Corsair | SAMA |
| Power | 850W | 850W |
| Certification | ATX 3.1 | 80 PLUS Bronze |
| Fan Size | 120mm | Temperature Controlled |
| Protection | Standard | OVP, OCP, OPP, SCP |
Dimension comparison
Price Comparison
When it comes to pricing, the SAMA B850 is significantly more affordable at C$74.99 compared to the CORSAIR RM850e, which retails for C$184.99. This price difference of C$110 suggests that the SAMA model could be a more attractive option for budget-conscious consumers seeking a reliable power supply for their systems. The price disparity raises important considerations about the features and performance you can expect from each unit, making it essential to weigh the value against the cost.
Certification and Efficiency
The CORSAIR RM850e boasts an Intel ATX 3.1 certification, which ensures compatibility with the latest technology and standards, including support for PCIe 5.1. In contrast, the SAMA B850 is 80 PLUS Bronze certified, indicating it delivers over 85% efficiency at typical loads. While the CORSAIR model may have a higher certification level, the SAMA B850 still offers solid energy efficiency for its price point. Consumers must consider whether the additional certification and potential efficiency benefits of the RM850e justify its higher cost.
Build Quality and Reliability
The CORSAIR RM850e features 105°C-rated capacitors, designed to provide stable and reliable power, ensuring dependable electrical performance even under load. This attention to component quality suggests that the RM850e is built for longevity and durability. In contrast, while the SAMA B850 is equipped with several protection features, such as OVP, OCP, OPP, and SCP, it lacks the same level of high-quality components. This difference may lead to a perception that the RM850e is a more robust choice for users who prioritize long-term reliability.
Cooling Solutions
In terms of cooling, both power supplies are designed to operate quietly. The CORSAIR RM850e is equipped with a 120mm rifle bearing fan that employs a specially calculated fan curve to minimize noise, even under full load. Meanwhile, the SAMA B850 features a temperature-controlled fan that ensures quiet operation while maintaining optimal cooling performance. While both units promise quiet operation, the advanced engineering of the RM850e’s fan may provide a slight edge in noise control during intense usage.
Modular Design
The CORSAIR RM850e is a fully modular power supply, allowing users to connect only the cables necessary for their specific system build. This feature not only simplifies cable management but also enhances airflow within the case. On the other hand, the SAMA B850 does not specify whether it is modular, which might imply a more traditional cable setup. For users who value clean builds and optimal airflow, the modular design of the RM850e could be a significant factor in their purchasing decision.
Compatibility and Future-Proofing
The CORSAIR RM850e is designed to support the latest hardware standards, including Intel ATX 3.1 and PCIe 5.1, making it a future-proof choice for users planning to use high-end GPUs and motherboards. The SAMA B850, while also PCIe 5.1 ready and supporting the latest motherboards, may not offer the same level of assurance for long-term compatibility as the RM850e. Consumers should consider their future upgrade plans when deciding which power supply might best serve their needs.
Warranty and Support
The warranty period can often be a deciding factor for consumers when choosing a power supply. The SAMA B850 comes with a 3-year warranty, providing a reasonable safety net for buyers. In contrast, the warranty details for the CORSAIR RM850e are not specified but typically reflect the brand's commitment to quality and customer support. A longer or more comprehensive warranty can indicate a manufacturer’s confidence in their product, which is an essential consideration for peace of mind.
Which should you buy?
In conclusion, the decision between the CORSAIR RM850e and the SAMA B850 ultimately hinges on your specific needs and budget. The CORSAIR RM850e offers superior build quality, advanced cooling, and higher efficiency certifications, making it a great choice for high-performance builds and future-proofing. However, if you are budget-conscious and looking for a reliable power supply that still meets modern standards, the SAMA B850 presents a compelling and cost-effective alternative. Consider your priorities in terms of features, performance, and price to make the best choice for your system.
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