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NZXT C850 Gold Core - 850W ATX 3.1 Power Supply - 80 PLUS Gold - Cybenetics Plat vs MONTECH Century II - 850W High-End ATX Gaming Power Supply - 80 Plus Gold & Cybe

Updated August 2026The NZXT C850 Gold Core offers superior efficiency and quieter operation, making it the better choice for high-performance setups. However, the MONTECH Century II provides solid performance at a lower price.

The NZXT C850 Gold Core offers superior efficiency and quieter operation, making it the better choice for high-performance setups. However, the MONTECH Century II provides solid performance at a lower price.

Why NZXT C850 Gold Core - 850W ATX 3.1 Power Supply - 80 PLUS Gold - Cybenetics Plat is better

efficiency

NZXT has Cybenetics Platinum efficiency

noise level

NZXT operates in Zero RPM mode for silent performance

GPU compatibility

NZXT supports next-gen NVIDIA graphics cards

Why MONTECH Century II - 850W High-End ATX Gaming Power Supply - 80 Plus Gold & Cybe is better

price

MONTECH is £9.95 cheaper

warranty

MONTECH has a 10-year warranty

modularity

Both are fully modular, but MONTECH emphasizes this in marketing

Overall score

NZXT C850 Gold Core - 850W ATX 3.1 Power Supply - 80 PLUS Gold - Cybenetics Plat
85
MONTECH Century II - 850W High-End ATX Gaming Power Supply - 80 Plus Gold & Cybe
75

Specifications

SpecNZXT C850 Gold Core - 850W ATX 3.1 Power Supply - 80 PLUS Gold - Cybenetics PlatMONTECH Century II - 850W High-End ATX Gaming Power Supply - 80 Plus Gold & Cybe
BrandNZXTMontech
Power850W850W
Certification80 PLUS Gold80 PLUS Gold
Fan Size135 mmN/A
ModularFullyFully

Dimension comparison

NZXT C850 Gold Core - 850W ATX 3.1 Power Supply - 80 PLUS Gold - Cybenetics PlatMONTECH Century II - 850W High-End ATX Gaming Power Supply - 80 Plus Gold & Cybe

Price Comparison

When evaluating the NZXT C850 Gold Core and the MONTECH Century II, the price is a significant factor. The NZXT C850 Gold Core is priced at £89.99, while the MONTECH Century II comes in at a lower price of £80.04. This means that the MONTECH offers a savings of £9.95, which may appeal to budget-conscious consumers. Both power supplies fall under the 80 PLUS Gold certification, ensuring energy efficiency, but the price difference could influence a buyer's decision, especially for those building a gaming rig or upgrading their existing setup.

Efficiency and Performance

Efficiency is a critical consideration for power supplies, and both the NZXT C850 Gold Core and the MONTECH Century II excel in this area with 80 PLUS Gold certification. The NZXT model, however, boasts Cybenetics Platinum efficiency, indicating it may have superior performance under demanding loads. This certification suggests that the NZXT is engineered to provide stable performance while reducing heat and power draw, which can be crucial during intensive gaming sessions. While the MONTECH also holds a Cybenetics Platinum rating, the NZXT's emphasis on energy-efficient operation could make it a more appealing option for users prioritising performance.

Compatibility and Features

Both power supplies support the latest ATX 3.1 and PCIe 5.1 standards, making them suitable for modern gaming rigs. The NZXT C850 Gold Core features a dual-colour 12V-2x6 connector, designed specifically for next-gen NVIDIA graphics cards, ensuring safe and efficient power delivery. In contrast, the MONTECH Century II comes with a 12V-2x6 cable but lacks the specific mention of support for NVIDIA graphics cards. This slight edge in compatibility may make the NZXT a more attractive option for users with high-performance GPUs, particularly those looking to future-proof their systems.

Noise Levels

When it comes to operational noise, the NZXT C850 Gold Core is designed for whisper-quiet performance, achieving a Cybenetics noise certification of A++ for its 135 mm fluid dynamic bearing fan. This means that under light workloads, the fan can operate in Zero RPM mode, ensuring virtually silent operation. The MONTECH Century II does not provide specific noise level ratings, which may raise concerns for users who prioritise a quiet environment. The NZXT's focus on near-silent performance could be a decisive factor for gamers or professionals who work in noise-sensitive settings.

Build Quality and Reliability

In terms of build quality, both models offer fully modular designs, which facilitate easier cable management and improve airflow within the case. The MONTECH Century II is backed by a 10-year warranty, suggesting a strong confidence in its durability. While the NZXT C850 Gold Core does not specify a warranty period, its Cybenetics Platinum efficiency rating implies a robust construction geared towards longevity. The confidence in build quality from both brands makes them reliable choices, but the MONTECH's explicit long warranty period may provide additional peace of mind for potential buyers.

Target Audience

The target audience for both power supplies is quite similar, predominantly focusing on gamers and PC builders seeking high-performance components. However, the NZXT C850 Gold Core, with its focus on compatibility with next-gen GPUs and emphasis on quiet operation, might attract users with high-end gaming setups or those concerned with noise. Conversely, the MONTECH Century II, with its more budget-friendly price and solid performance, is likely to appeal to gamers looking for reliability without breaking the bank. Each model caters to slightly different market segments, shaping purchasing decisions based on specific user needs.

Aesthetic Appeal

Aesthetics may play a minor role in the decision-making process for a power supply, but it’s still worth considering. The NZXT C850 Gold Core is known for its sleek design and modern look, which can complement a stylish gaming setup. The MONTECH Century II also presents a clean and professional appearance, making it suitable for various builds. While both units may not be the main focus in aesthetics, potential buyers should consider how each model fits into their overall system design and whether they prefer the look of one over the other.

Which should you buy?

In conclusion, choosing between the NZXT C850 Gold Core and the MONTECH Century II ultimately depends on your specific needs and budget. If you prioritise top-tier efficiency, compatibility with high-end GPUs, and near-silent operation, the NZXT C850 Gold Core, despite its higher price of £89.99, may be the better choice for you. However, if you're looking for a reliable power supply that offers solid performance at a more accessible price of £80.04, the MONTECH Century II is an excellent alternative. Each power supply has its strengths, making them both worthy contenders in the power supply market.

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NZXT C850 Gold Core - 850W ATX 3.1 Power Supply - 80 PLUS Gold - Cybenetics Plat vs MONTECH Century II - 850W High-End ATX Gaming Power Supply - 80 Plus Gold & Cybe | versusfinder