SAMA G850 Power Supply - 850W Fully Modular 80 Plus Gold Certified ATX 3.1 & PCI vs JUSTOP Black 700W Power Supply Unit ATX PSU With 120MM Quiet Fan

Overview

In this comparison, we will examine the SAMA G850 Power Supply and the JUSTOP Black 700W Power Supply Unit to determine which one offers better value and performance for users looking for a reliable power supply. The SAMA G850 is priced at £84.99, while the JUSTOP is significantly more affordable at £29.95. This significant price difference sets the stage for a detailed evaluation of their features, efficiencies, and overall suitability for different user needs.

Power Output and Efficiency

The SAMA G850 boasts a robust output of 850W and is certified with an 80 Plus Gold efficiency rating, achieving up to 91.15% efficiency at typical loads. This high efficiency not only reduces power waste but also lowers heat generation, making it an ideal choice for high-performance systems. In contrast, the JUSTOP Black delivers a maximum output of 700W with a lower efficiency rating of 70%. While it meets the basic requirements for general computing, it may not be suitable for high-end gaming or demanding applications where power efficiency is crucial.

Build Quality and Design

The SAMA G850 features a fully modular cable design, allowing users to utilise only the cables they need. This design enhances airflow, cable management, and overall aesthetics for high-end builds. Additionally, the SAMA unit is equipped with premium Japanese capacitors and a silent 140mm Fluid Dynamic Bearing fan, which ensures quieter operation and longevity. On the other hand, the JUSTOP unit, while functional, has a less premium feel with a standard 120mm cooling fan and does not highlight the same level of build quality or cable management options, which could affect the overall aesthetic and airflow in a case.

Cooling System

Cooling performance is a vital aspect of power supplies, particularly in high-demand scenarios. The SAMA G850 employs a 140mm cooling fan designed for quiet operation and extended lifespan, ensuring that the power supply remains cool under load. This is complemented by its compact form factor. Conversely, the JUSTOP Black features a 120mm quiet fan, which, while adequate, may not provide the same level of cooling efficiency as its SAMA counterpart. Users who are concerned with thermal performance during intensive tasks may find the SAMA G850 to be the superior choice in this category.

Compatibility and Connectivity

The SAMA G850 is designed for modern systems, featuring an ATX 3.1 standard with a native 12V-2x6 connector for the latest NVIDIA RTX 50 and 40 Series GPUs, ensuring broad compatibility with cutting-edge hardware. It includes multiple connectors, catering to high-end components. In contrast, the JUSTOP Black adheres to Intel ATX 12V v.2.3 and EPS 12V v.2.92 standards, making it compatible with a wide range of CPUs and motherboards, but it may lack the specific high-performance connectors that enthusiasts require for the latest graphics cards.

Safety Features

Safety is paramount when choosing a power supply, and both units offer essential protection features. The SAMA G850 includes protections such as Over Voltage Protection (OVP), Over Current Protection (OCP), and Short Circuit Protection (SCP), among others, ensuring safe operation under various conditions. The JUSTOP Black also includes similar safety mechanisms, such as OVP, OLP, and SCP, providing a basic level of security for users. However, the SAMA G850’s extensive safety features and high-quality components may offer additional peace of mind for users with high-performance builds.

Price Comparison

The price difference between the two power supplies is substantial, with the SAMA G850 retailing at £84.99 and the JUSTOP Black at only £29.95. While the JUSTOP offers a budget-friendly option for users needing a basic power supply, the SAMA G850 justifies its higher price with enhanced performance, efficiency, and build quality. For users building high-performance systems, the investment in the SAMA G850 may result in better long-term value despite the higher upfront cost.

Target Audience

The SAMA G850 is aimed at gamers, content creators, and system builders who require a reliable and efficient power supply capable of supporting high-end hardware. Its modular design and high efficiency make it suitable for advanced users looking to optimise their builds. Conversely, the JUSTOP Black serves as an entry-level solution for casual users or those on a tight budget who need a basic power supply for standard computing tasks. While it may not deliver the same level of performance, it is adequate for less demanding systems.

Which should you buy?

Ultimately, the choice between the SAMA G850 and the JUSTOP Black comes down to your specific needs and budget. If you are seeking a power supply that offers high efficiency, advanced features, and robust performance for a high-end system, the SAMA G850 is the clear winner at £84.99. However, if you are looking for a budget option for general use, the JUSTOP Black at £29.95 provides adequate performance for basic computing tasks. Consider your own requirements carefully to make the best decision for your build.