NZXT C850 Gold ATX 3.1 - Fully Modular Low-Noise PC Gaming Power Supply - 850 Wa vs MSI MAG A1000GLS PCIE5 Power Supply Unit
Updated August 2026 — The NZXT C850 Gold offers a more budget-friendly option with silent operation, while the MSI MAG A1000GLS provides superior efficiency and advanced protective features.
The NZXT C850 Gold offers a more budget-friendly option with silent operation, while the MSI MAG A1000GLS provides superior efficiency and advanced protective features.
Why NZXT C850 Gold ATX 3.1 - Fully Modular Low-Noise PC Gaming Power Supply - 850 Wa is better
price
£20.09 cheaper than MSI
noise operation
specifically silent under 50% load
ATX standard
compliant with ATX 3.1 standard
Why MSI MAG A1000GLS PCIE5 Power Supply Unit is better
efficiency
80 PLUS Gold certified with up to 90% efficiency
compact size
150mm dimensions for better fit
protection features
includes OCP, OTP, and OVP protections
Overall score
Specifications
| Spec | NZXT C850 Gold ATX 3.1 - Fully Modular Low-Noise PC Gaming Power Supply - 850 Wa | MSI MAG A1000GLS PCIE5 Power Supply Unit |
|---|---|---|
| Power Output | 600W | 600W |
| Noise Level | Ultra-low | Low |
| Efficiency Rating | N/A | 80 PLUS Gold |
| Build Quality | Premium capacitors | LLC half-bridge |
| Form Factor | ATX | ATX |
Dimension comparison
Price Comparison
The NZXT C850 Gold is priced at £84.90, while the MSI MAG A1000GLS is significantly more expensive at £104.99. This presents a clear financial consideration for consumers looking for a high-quality power supply. The £20.09 difference may influence budget-conscious buyers, especially when both products offer similar performance features. Despite its higher price, the MSI model includes a range of advanced specifications that might justify the cost for certain users.
Efficiency Ratings
When it comes to efficiency, the MSI MAG A1000GLS boasts an impressive 80 PLUS Gold certification, achieving up to 90% efficiency. In contrast, the NZXT C850 Gold does not specify an efficiency rating, which could be a disadvantage for users prioritising energy-saving capabilities. The efficiency rating of a power supply not only impacts electricity costs but also thermal performance, making the MSI unit potentially more appealing for high-performance builds requiring consistent power delivery.
Power Delivery Capabilities
Both power supplies are designed to deliver robust power, but they do so in slightly different ways. The NZXT C850 Gold can provide up to 600 watts through its heat-resistant 12V-2x6 connector, which is specifically designed to support NVIDIA's GeForce RTX 50 Series graphics cards. Meanwhile, the MSI MAG A1000GLS features native 12V-2x6 PCIe connectors, also delivering up to 600 watts to support PCIe 5.1 GPUs. This equivalence in power delivery capability suggests that both models can handle demanding hardware, making the choice more about brand preference and additional features.
Noise Levels
The NZXT C850 Gold distinguishes itself with its ultra-low noise operation, featuring a 135mm fluid dynamic bearing fan that operates silently under 50% load. This design is ideal for gamers and PC builders who value a quiet computing environment. Conversely, the MSI MAG A1000GLS also aims for low-noise performance, with a 135mm fluid-dynamic bearing fan that maintains a sound level equivalent to a peaceful night. Both power supplies effectively minimise noise, but the NZXT's specific mention of silent operation under moderate loads may give it an edge for noise-sensitive users.
Build Quality and Design
In terms of build quality, the NZXT C850 Gold uses 100% premium Japanese capacitors, which enhance hold-up time and reduce ripple noise, ensuring stable power delivery. This premium construction is designed to withstand the rigours of high-performance gaming setups. On the other hand, the MSI MAG A1000GLS features an LLC half-bridge with a DC-to-DC converter and active PFC design for reliable output, complemented by comprehensive protection features like OCP, OTP, and OVP. Both products showcase durable designs, but the choice may boil down to specific needs regarding power stability and reliability.
Size and Compatibility
Size can be a crucial factor in selecting a power supply, and both models are designed to fit standard PC build requirements. The NZXT C850 Gold does not specify its dimensions, but it is expected to conform to the ATX standard, ensuring compatibility with a wide array of cases. The MSI MAG A1000GLS, however, explicitly notes its compact size, measuring 150mm in length and width, allowing for easier installation and better airflow management. This compactness might appeal to builders with limited space in their cases, offering an edge in terms of installation versatility.
Additional Features
The NZXT C850 Gold is compliant with the ATX 3.1 standard, making it future-ready for high-performance components. Its Zero Fan Mode is particularly appealing for users who want a completely silent operation during less demanding tasks. The MSI MAG A1000GLS, while slightly pricier, provides a range of protective features such as OPP and SCP, which ensure reliable operation under various conditions. Both power supplies offer valuable features, but the unique offerings of each may cater to different preferences among PC builders.
Which should you buy?
Choosing between the NZXT C850 Gold and the MSI MAG A1000GLS largely depends on your specific needs and budget. The NZXT C850 Gold is the more affordable option at £84.90, with features that cater to silent operations and energy efficiency. However, if you require advanced efficiency ratings and additional protective features, the MSI MAG A1000GLS, priced at £104.99, could be worth the extra investment. Ultimately, both power supplies are excellent choices; your decision should reflect your priorities in performance, noise levels, and budget constraints.
versusfinder.com is a participant in the Amazon Services LLC Associates Programme and the Amazon EU Associates Programme. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.

