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CORSAIR CX650 80 PLUS Bronze Non Modular Low-Noise ATX 650 Watt Power Supply - U vs 5V Power Supply for Polycom VVX 150 250 350 450 2200-48872-001 1465-48871-001

Updated August 2026The CORSAIR CX650 is the superior choice for high-performance needs, while the COLM power supply is a budget-friendly option for VoIP phones.

The CORSAIR CX650 is the superior choice for high-performance needs, while the COLM power supply is a budget-friendly option for VoIP phones.

Why CORSAIR CX650 80 PLUS Bronze Non Modular Low-Noise ATX 650 Watt Power Supply - U is better

power output

CORSAIR provides 650 watts compared to COLM's 15 watts.

efficiency

CORSAIR has 80 PLUS Bronze certification for up to 88% efficiency.

build quality

CORSAIR features a compact design with low-noise cooling.

Why 5V Power Supply for Polycom VVX 150 250 350 450 2200-48872-001 1465-48871-001 is better

price

COLM is significantly cheaper at £11.98.

specific use

COLM is designed specifically for VoIP phones.

cable length

COLM offers a 6.6 ft cable for flexibility.

Overall score

CORSAIR CX650 80 PLUS Bronze Non Modular Low-Noise ATX 650 Watt Power Supply - U
85
5V Power Supply for Polycom VVX 150 250 350 450 2200-48872-001 1465-48871-001
55

Specifications

SpecCORSAIR CX650 80 PLUS Bronze Non Modular Low-Noise ATX 650 Watt Power Supply - U5V Power Supply for Polycom VVX 150 250 350 450 2200-48872-001 1465-48871-001
BrandCorsairCOLM
Certification80 PLUS BronzeNone
CoolingLow-noise fanStandard
CompatibilityPC componentsVoIP phones
Warranty5 years1 year

Dimension comparison

CORSAIR CX650 80 PLUS Bronze Non Modular Low-Noise ATX 650 Watt Power Supply - U5V Power Supply for Polycom VVX 150 250 350 450 2200-48872-001 1465-48871-001

Overview of the Products

In this comparison, we will examine the CORSAIR CX650 80 PLUS Bronze Non Modular Low-Noise ATX 650 Watt Power Supply and the 5V Power Supply for Polycom VVX 150, 250, 350, and 450. The CORSAIR power supply is priced at £44.99, while the COLM power supply is significantly more affordable at £11.98. This stark price difference reflects the distinct uses and target markets of each product.

The CORSAIR CX650 is designed for high-performance PCs, providing up to 650 watts of power, while the COLM power supply is tailored for specific VoIP phones. This article will delve deeper into various aspects of these two power supplies, highlighting their features, compatibility, efficiency, and more.

Features and Specifications

The CORSAIR CX650 boasts several impressive features, including 80 PLUS Bronze Certification, which signifies up to 88% operational efficiency. This certification is particularly beneficial as it reduces heat generation and lowers energy costs. Additionally, it offers full continuous power, ensuring that it delivers its full rated wattage of 650 watts consistently.

Conversely, the 5V Power Supply for Polycom provides a more modest output of 5V and 3A, equating to a maximum of 15 watts. It is primarily designed for specific models of VoIP phones, making it unsuitable for general PC use. While both power supplies serve their respective functions well, their specifications cater to different needs — one for high-performance computing and the other for telecommunication devices.

Efficiency and Performance

Efficiency is a crucial aspect when evaluating power supplies. The CORSAIR CX650's 80 PLUS Bronze Certification means it operates at a high efficiency level, reducing electricity consumption and heat output. Operating with an efficiency of up to 88% is a notable advantage for users seeking long-term savings on energy bills.

On the other hand, the COLM power supply, while efficient for its intended purpose, does not provide the same level of operational efficiency as the CORSAIR model. Its maximum output of 15 watts is sufficient for powering VoIP phones but lacks the scalability and performance that a user might require from a power supply for a gaming or workstation PC.

Build Quality and Design

The build quality of a power supply is integral to its reliability and longevity. The CORSAIR CX650 features a compact casing with a length of 125mm, allowing it to fit easily into most modern PC cases. Its black sleeved cables and powder-coated casing contribute to a clean aesthetic, enhancing the overall look of the build.

In contrast, the COLM power supply, while functional, does not emphasize aesthetics or advanced build quality. Its design prioritises compatibility with specific VoIP phone models rather than the visual appeal or integration into a PC build. While both products are robust within their intended environments, the CORSAIR model clearly stands out in terms of design and attention to quality.

Compatibility

Compatibility is a vital factor when selecting a power supply. The CORSAIR CX650 is versatile and can support a wide range of components within a gaming or workstation PC. Its full continuous power rating makes it a reliable choice for users looking to build or upgrade their systems.

The 5V Power Supply for Polycom is specifically designed for compatibility with Polycom VOIP IP Phones, including models VVX 150, 250, 350, and 450, as well as several Cisco and Yealink phones. This targeted compatibility makes it an excellent choice for businesses or users reliant on these specific phone models, but it limits its use in broader applications.

Noise Levels

Noise levels can significantly affect the user experience, especially in quiet environments. The CORSAIR CX650 features a low-noise cooling fan that operates quietly under light loads, only ramping up when the power supply is under heavy stress. This thermally controlled fan ensures that users can enjoy a quiet computing experience without unnecessary distractions.

In contrast, the COLM power supply does not provide specific information about noise levels. However, given its simpler design and lower power requirements, it is likely to operate silently, as it is primarily used for powering VoIP phones in environments where noise levels are typically low.

Price Comparison

The price difference between these two power supplies is significant, with the CORSAIR CX650 priced at £44.99 and the COLM power supply at £11.98. This disparity reflects their different target markets and capabilities. The higher price of the CORSAIR unit can be justified by its advanced features, higher power output, and better efficiency ratings, making it a suitable investment for gamers and professionals.

In contrast, the COLM power supply offers an economical solution for users needing a reliable power source for specific VoIP phone models. Its lower price point makes it accessible for businesses that require multiple units without a significant financial outlay, but it lacks the versatility and performance of the CORSAIR model.

Which should you buy?

The decision between the CORSAIR CX650 and the 5V Power Supply for Polycom largely depends on your specific needs. If you are looking for a high-performance power supply for a gaming or workstation PC, the CORSAIR model is undoubtedly the superior choice, offering 650 watts of power, efficiency, and a reliable cooling system at £44.99.

However, if your requirement is solely for powering VoIP phones, the COLM power supply at £11.98 is a practical and cost-effective option. It provides sufficient power for its intended devices while maintaining compatibility with a range of phone models. Ultimately, your choice should align with your intended use and budget considerations.

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CORSAIR CX650 80 PLUS Bronze Non Modular Low-Noise ATX 650 Watt Power Supply - U vs 5V Power Supply for Polycom VVX 150 250 350 450 2200-48872-001 1465-48871-001 | versusfinder