NZXT C850 Gold Core - 850W ATX 3.1 Power Supply - vs SAMA White 650W Power Supply - Fully Modular 80
Updated August 2026 — NZXT C850 Gold Core - 850W ATX 3.1 Power Supply - wins on noise level and warranty, SAMA White 650W Power Supply - Fully Modular 80 wins on compatibility.
The NZXT C850 Gold Core offers superior build quality and warranty, while the SAMA White provides excellent value for budget-conscious users.
Why NZXT C850 Gold Core - 850W ATX 3.1 Power Supply - is better
Warranty
7-year warranty vs 5-year warranty
Noise Level
Quieter operation at <15 dBA vs ≤20 dBA
Build Quality
Premium 105°C-rated capacitors vs standard capacitors
Why SAMA White 650W Power Supply - Fully Modular 80 is better
Price
$62.99 vs $99.99
Efficiency
91.15% efficiency vs 90% efficiency
Cable Management
Flat cables for better airflow vs embossed cables
Overall score
Specifications
| Spec | NZXT C850 Gold Core - 850W ATX 3.1 Power Supply - | SAMA White 650W Power Supply - Fully Modular 80 |
|---|---|---|
| Certification | 80 PLUS Gold | 80 PLUS Gold |
| Fan Size | 135 mm | 120 mm |
| Connector Type | 12V-2x6 | PCIe 5.1 |
| Capacitors | 105°C-rated | Japanese |
| Noise Rating | A++ | ≤20 dBA |
Dimension comparison
Pricing Comparison
The NZXT C850 Gold Core is priced at $99.99, while the SAMA White 650W Power Supply is significantly cheaper at $62.99, making it about 37% less expensive. This price difference can be a significant factor for budget-conscious consumers looking for reliable power supplies without breaking the bank. While the SAMA offers a lower price point, it’s important to consider the features and performance that each unit provides, which could justify the higher cost of the NZXT for some users.
Efficiency Ratings
Both power supplies boast impressive efficiency ratings, with the NZXT C850 achieving an 80 PLUS Gold certification and Cybenetics Platinum efficiency. This means it can deliver up to 90% efficiency at 50% load, reducing energy costs and heat output. The SAMA White also holds an 80 PLUS Gold certification, with up to 91.15% efficiency at the same load. The slightly higher efficiency rating of the SAMA could lead to marginally lower energy bills over time, making it an appealing choice for efficiency-focused users.
Design and Modularity
The NZXT C850 features a fully modular design, allowing users to connect only the necessary cables, promoting a clean and efficient build. Its cables are embossed for easy identification and routing. The SAMA White also offers a fully modular design, but it emphasizes streamlined cable management with flat cables to enhance airflow. Both designs are user-friendly, but the NZXT's embossed cables may provide a more premium feel, while the SAMA's flat cables could make installation slightly more straightforward.
Compatibility
When it comes to compatibility, the NZXT C850 supports next-gen GPUs with a dual-color 12V-2x6 connector and can accommodate most graphics cards using a 12V-2x6 cable or up to three 8-pin PCIe cables. The SAMA White is also compliant with the latest ATX 3.1 and PCIe 5.1 standards, supporting high-end GPUs like the RTX 3090 Ti and RTX 40 series. Both power supplies are designed for modern gaming setups, but the NZXT’s additional options for cable configurations may give it a slight edge in flexibility.
Noise Levels
The NZXT C850 is designed for whisper-quiet operation, achieving a Cybenetics noise certification with a rating of A++ for its near-silent performance, generating less than 15 dBA under normal conditions. Meanwhile, the SAMA White utilizes a 120mm ECO fan with Fluid Dynamic Bearing technology, ensuring quiet operation with noise levels as low as 20 dBA. While both units are engineered for low noise, the NZXT's quieter performance could be particularly appealing for users focused on creating a silent PC environment.
Build Quality and Warranty
Both power supplies emphasize quality components, but they differ in warranty offerings. The NZXT C850 is built with premium 105°C-rated capacitors and offers a robust 7-year warranty, highlighting its long-term reliability. On the other hand, the SAMA White is constructed with high-quality Japanese capacitors and provides a 5-year warranty. The extended warranty of the NZXT may provide additional peace of mind for customers looking for durability and longevity in their components.
User Experience and Features
The NZXT C850 is noted for its whisper-quiet operation and built-in protections, making it a reliable choice for high-performance builds. It also features a Zero RPM mode for silent operation during light workloads. The SAMA White emphasizes efficient cooling and cable management, which can enhance the user experience during the build process. While both products aim to deliver a seamless user experience, the unique features of each power supply cater to slightly different user preferences, such as noise sensitivity or ease of installation.
Which should you buy?
The decision between the NZXT C850 Gold Core and the SAMA White 650W Power Supply ultimately comes down to your specific needs and budget. If you prioritize efficiency, premium build quality, and a long warranty, the NZXT C850 at $99.99 may be worth the investment. However, if you're looking for a more budget-friendly option without sacrificing essential features and performance, the SAMA White at $62.99 offers great value. Consider your system requirements and personal preferences in noise level, cable management, and compatibility when making your choice.

