CORSAIR RM1000e vs SAMA G850 Power Supply - 850W Fully Modular 80 Plus Gold Certified ATX 3.1 & PCI
Updated August 2026 — The CORSAIR RM1000e offers superior power and features, while the SAMA G850 provides excellent value for budget-conscious users.
The CORSAIR RM1000e offers superior power and features, while the SAMA G850 provides excellent value for budget-conscious users.
Why CORSAIR RM1000e is better
Higher Power
CORSAIR RM1000e provides 1000W compared to SAMA G850's 850W.
Component Quality
CORSAIR uses 105°C-rated capacitors for reliability.
Noise Control
CORSAIR RM1000e is designed for lower noise levels.
Why SAMA G850 Power Supply - 850W Fully Modular 80 Plus Gold Certified ATX 3.1 & PCI is better
Price
SAMA G850 is significantly cheaper at £84.99.
Efficiency
SAMA G850 has 80 Plus Gold certification.
Compact Size
SAMA G850 has a smaller form factor.
Overall score
Specifications
| Spec | CORSAIR RM1000e | SAMA G850 Power Supply - 850W Fully Modular 80 Plus Gold Certified ATX 3.1 & PCI |
|---|---|---|
| Brand | Corsair | SAMA |
| Modular | Fully | Fully |
| Cooling Fan | 120mm Rifle | 140mm FDB |
| ATX Standard | 3.1 | 3.1 |
| Warranty | 10 years | 5 years |
Dimension comparison
Price Comparison
The CORSAIR RM1000e is priced at £149.88, while the SAMA G850 Power Supply is significantly more affordable at £84.99. This represents a difference of £64.89, making the SAMA G850 a compelling option for budget-conscious consumers. The price gap raises questions about the value offered by each power supply, particularly in terms of features and performance. While the CORSAIR model is a premium offering with advanced specifications, the SAMA version provides a solid alternative for users looking for efficiency without breaking the bank.
Efficiency and Certification
In terms of efficiency, the SAMA G850 boasts an 80 Plus Gold certification, achieving up to 91.15% efficiency at typical loads. This means that it is designed to minimise energy waste, resulting in lower heat generation—an important factor for high-performance systems. On the other hand, the CORSAIR RM1000e is also compliant with the latest Intel ATX 3.1 standard, ensuring it meets modern power requirements. However, it does not specify an efficiency rating as high as the SAMA's 80 Plus Gold. For users prioritising energy efficiency, the SAMA G850 clearly holds an advantage.
Modular Design
Both power supplies feature a fully modular design, which allows users to connect only the cables needed for their build. This design promotes better cable management, improved airflow, and cleaner aesthetics. The CORSAIR RM1000e is noted for its reliable and efficient operation through its modular cabling system. Meanwhile, the SAMA G850's fully modular layout also contributes to enhanced airflow and aesthetics, as it allows for a more tailored build. Both options cater well to gamers and workstation users who are conscious about their system's appearance and functionality.
Cooling Solutions
The cooling solutions differ between the two models. The CORSAIR RM1000e utilises a 120mm rifle bearing fan that is designed to keep noise levels low, even under full load. This is particularly beneficial for users who seek a quieter computing environment. Conversely, the SAMA G850 features a 140mm Fluid Dynamic Bearing (FDB) fan, which is engineered for quiet operation and vibration dampening. Given its larger size, the SAMA's fan may offer slightly better cooling performance, although both units aim to provide efficiency and silence during operation.
Component Quality
When it comes to component quality, both power supplies leverage high-grade materials. The CORSAIR RM1000e includes 105°C-rated capacitors, which promise reliable power delivery and stable electrical performance. In contrast, the SAMA G850 is equipped with premium Japanese capacitors, known for their longevity and stability. This focus on quality components in both units indicates that users can expect a durable and stable power supply from either brand, although the specifics of each may appeal to different preferences.
Compatibility
Compatibility with modern graphics cards is a key consideration for many users. The CORSAIR RM1000e is compliant with the ATX 3.1 standard and is designed to support the latest PCIe 5.1 platform, which can withstand power excursions from GPUs. The SAMA G850 also meets the ATX 3.1 standard and includes a native 12V-2x6 connector specifically for NVIDIA GeForce RTX 50 and 40 series graphics cards. This feature makes the SAMA G850 particularly attractive for users planning to utilise high-end graphics cards, ensuring they have a power supply that can handle their demands.
Noise Levels
Noise levels are a crucial factor for many users, especially in gaming or professional environments. The CORSAIR RM1000e is designed to keep fan noise to a minimum, thanks to its carefully calculated fan curve, even at full load. The SAMA G850, with its 140mm FDB fan, is also designed for quiet operation, focusing on reducing vibration and noise. Both power supplies aim to provide a silent experience, but the CORSAIR specifically highlights its low-noise capabilities, which may be a deciding factor for those sensitive to sound.
Which should you buy?
Choosing between the CORSAIR RM1000e and the SAMA G850 Power Supply ultimately depends on your specific needs and budget. The CORSAIR model offers a higher power output at 1000W, advanced features, and a reputation for reliability, making it suitable for high-performance builds and those who prioritise premium quality. However, at £84.99, the SAMA G850 provides an excellent balance of features and performance, particularly with its 80 Plus Gold efficiency and modern compatibility for high-end GPUs. For users on a budget or those who do not require the highest wattage, the SAMA G850 presents a strong value proposition. In contrast, if you are looking for a power supply that can handle demanding tasks and noise reduction, the CORSAIR RM1000e may be the better choice.
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