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SAMA White 650W Power Supply - Fully Modular 80 vs SUPERNIGHT 12V 30A Switching Power Supply, 110-240

Updated August 2026 — SAMA White 650W Power Supply - Fully Modular 80 wins on modularity and power, SUPERNIGHT 12V 30A Switching Power Supply, 110-240 wins on price.

The SAMA White 650W Power Supply is a superior choice for high-performance needs, while the SUPERNIGHT is a budget-friendly option for simpler applications.

Why SAMA White 650W Power Supply - Fully Modular 80 is better

Power Output

SAMA offers 650W compared to SUPERNIGHT's 360W.

Efficiency

SAMA has 80 PLUS Gold certification.

Modularity

SAMA features a fully modular design.

Why SUPERNIGHT 12V 30A Switching Power Supply, 110-240 is better

Price

SUPERNIGHT is significantly cheaper.

Simplicity

SUPERNIGHT is easier to set up for basic tasks.

Compactness

SUPERNIGHT is smaller and lighter.

Overall score

SAMA White 650W Power Supply - Fully Modular 80
85
SUPERNIGHT 12V 30A Switching Power Supply, 110-240
55

Specifications

SpecSAMA White 650W Power Supply - Fully Modular 80SUPERNIGHT 12V 30A Switching Power Supply, 110-240
Output650W360W
Certification80 PLUS GoldN/A
ModularFully ModularNon-Modular
Cooling Fan120mm ECO FanStandard Fan
Warranty5 Years1 Year

Dimension comparison

SAMA White 650W Power Supply - Fully Modular 80SUPERNIGHT 12V 30A Switching Power Supply, 110-240

Price Comparison

The SAMA White 650W Power Supply is priced at $62.99, while the SUPERNIGHT 12V 30A Switching Power Supply is significantly cheaper at $20.99. This makes the SUPERNIGHT about 67% less expensive than the SAMA. For users on a tight budget or those looking for a power supply for simpler applications, the SUPERNIGHT presents a compelling option. However, the price difference also reflects the capabilities and features of each product, with the SAMA catering to high-performance needs.

Power Output and Efficiency

The SAMA White 650W Power Supply offers a robust output of 650 watts, designed to support high-end components, including RTX 30/40 series GPUs. It boasts an 80 PLUS Gold certification, achieving up to 91.15% efficiency at 50% load. In contrast, the SUPERNIGHT provides a maximum output of 360 watts at 12V, which is suitable for lower-demand applications such as 3D printers and LED strips. While the SUPERNIGHT is efficient in its own right, it cannot compare to the high efficiency and output of the SAMA, making it less suitable for power-hungry setups.

Design and Modularity

The SAMA White 650W Power Supply features a fully modular design, allowing users to connect only the necessary cables for their specific setup. This design not only simplifies installation but also enhances airflow and aesthetics within a PC case. The SUPERNIGHT, however, is designed as a universal switching power supply with a more straightforward configuration that may not offer the same level of cable management. The modular nature of the SAMA can be particularly beneficial for gamers and PC builders seeking a clean and organized build.

Compatibility

The SAMA White 650W Power Supply is specifically designed to meet the latest ATX 3.1 and PCIe 5.1 standards, ensuring compatibility with the latest high-performance GPUs. This makes it an excellent choice for users looking to build or upgrade a gaming rig. On the other hand, the SUPERNIGHT is a versatile power supply suitable for various applications, including 3D printers and LED lighting. While it provides adequate compatibility for its intended use, it lacks the advanced integration with modern graphics cards that the SAMA offers.

Cooling and Noise Levels

Cooling performance is another area where the SAMA excels. It is equipped with a 120mm ECO fan featuring Fluid Dynamic Bearing (FDB) technology, which operates at noise levels as low as 20dB-A. This ensures quiet operation even under heavy loads, making it ideal for gaming setups where noise can be a distraction. The SUPERNIGHT, while it may have some cooling features, does not specify its noise levels in the same detail, which could be a concern for users who prioritize a silent operation in their projects.

Build Quality and Warranty

The SAMA White 650W Power Supply is built with high-quality Japanese capacitors, ensuring durability and stable power delivery. It also comes with a 5-year warranty, providing peace of mind for users investing in a power supply for demanding applications. In contrast, the SUPERNIGHT offers a 1-year replacement assurance with a promise of lifetime after-sale service. While the SUPERNIGHT is still a reliable choice for less demanding uses, the build quality and extended warranty of the SAMA make it a more robust option for critical systems.

Intended Use Cases

The SAMA White 650W Power Supply is aimed at gamers and professionals who require a high-capacity, efficient power source for demanding hardware setups. It supports modern GPUs and offers features that enhance system performance and stability. Conversely, the SUPERNIGHT 12V 30A Switching Power Supply is best suited for simpler projects like 3D printers, LED strips, and other low-power applications. The intended use cases for each product highlight their differences, with the SAMA being the clear choice for high-performance computing.

Which should you buy?

Choosing between the SAMA White 650W Power Supply and the SUPERNIGHT 12V 30A Switching Power Supply ultimately depends on your specific needs. If you require a high-output power supply for gaming or demanding applications, the SAMA is the superior choice, offering extensive features, compatibility, and efficiency. However, if you are looking for an affordable solution for lower-power devices, the SUPERNIGHT is a cost-effective option that meets basic requirements. In summary, assess your power needs and budget to determine which power supply fits your situation best.