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CORSAIR CX550 80 Plus Bronze Non Modular Low-Noise ATX vs Thermaltake Toughpower GT 850W ATX 3.1 Standard

Updated August 2026 — Thermaltake Toughpower GT 850W ATX 3.1 Standard leads on power output and modularity.

The Thermaltake Toughpower GT offers superior efficiency and wattage, making it the better choice for high-performance systems.

Why CORSAIR CX550 80 Plus Bronze Non Modular Low-Noise ATX is better

Price

CORSAIR is cheaper by 17%

Compact Size

CORSAIR has a smaller casing at 125mm

Warranty

CORSAIR offers a three-year warranty

Why Thermaltake Toughpower GT 850W ATX 3.1 Standard is better

Efficiency

Thermaltake has 80 PLUS Gold certification

Wattage

Thermaltake provides 850 watts compared to 550 watts

Modularity

Thermaltake features a fully modular design

Overall score

CORSAIR CX550 80 Plus Bronze Non Modular Low-Noise ATX
75
Thermaltake Toughpower GT 850W ATX 3.1 Standard
88

Specifications

SpecCORSAIR CX550 80 Plus Bronze Non Modular Low-Noise ATXThermaltake Toughpower GT 850W ATX 3.1 Standard
CoolingLow-noise fanSmart Zero Fan
ModularityNon-modularFully modular
CompatibilityStandardATX 3.1
ConnectorStandardNative PCIe 5.1
Power DeliveryContinuousStable

Dimension comparison

CORSAIR CX550 80 Plus Bronze Non Modular Low-Noise ATXThermaltake Toughpower GT 850W ATX 3.1 Standard

Overview of the Power Supplies

When it comes to choosing a power supply for your PC, efficiency, wattage, and features are key factors. The CORSAIR CX550 80 Plus Bronze is priced at $65.99, while the Thermaltake Toughpower GT 850W ATX 3.1 is available for $95.52. This makes the CORSAIR about 17% cheaper than the Thermaltake. Both power supplies cater to different user needs, making them suitable for various builds. The CORSAIR is ideal for those with moderate power requirements, whereas the Thermaltake is designed for high-performance systems.

Efficiency Ratings

The CORSAIR CX550 boasts an 80 PLUS Bronze certification, offering up to 88% operational efficiency. In contrast, the Thermaltake Toughpower GT achieves an even higher 80 PLUS Gold rating, with up to 90% efficiency. This means that while the CORSAIR is efficient, the Thermaltake will generate slightly less heat and consume less energy overall. For users looking to maximize their energy savings and reduce heat output, the Thermaltake presents a distinct advantage.

Wattage and Power Delivery

The wattage of a power supply is crucial for ensuring that all components receive adequate power. The CORSAIR CX550 delivers a continuous power output of 550 watts, suitable for most mid-range builds. On the other hand, the Thermaltake Toughpower GT provides a more robust 850 watts, making it more capable of supporting high-end gaming rigs or workstations. This difference in power delivery is significant for users planning to run demanding applications or multiple GPUs.

Design and Aesthetics

In terms of design, the CORSAIR CX550 features a compact 125mm casing with black sleeved cables and a black powder-coated finish, making it visually appealing and easily compatible with most PC builds. The Thermaltake Toughpower GT, measuring 150mm, also provides a sleek black design but includes low-profile flat black cables for enhanced cable management and airflow. Both designs are functional, but the Thermaltake’s modularity may appeal more to users focused on aesthetics and airflow.

Cooling Technology

Cooling capabilities are critical for maintaining system stability. The CORSAIR CX550 utilizes a 120mm thermally controlled low-noise fan, which operates quietly under low loads but ramps up under heavy stress. Conversely, the Thermaltake Toughpower GT employs Smart Zero Fan technology, which automatically adjusts the fan speed based on load, ensuring minimal noise during low-load operations. For users who prioritize a quiet environment, the Thermaltake may offer a more advanced solution.

Compatibility and Modern Features

The Thermaltake Toughpower GT supports ATX 3.1 standards and includes native PCIe 12V-2x6 (12+4 pin) connectors, making it fully compatible with the latest graphics cards. This is particularly advantageous for gamers and professionals looking to future-proof their systems. The CORSAIR CX550, while solidly built, does not offer the same level of modern connectivity, which may limit its appeal for users seeking to utilize the newest technology.

Warranty and Support

Warranties can provide peace of mind when investing in a power supply. The CORSAIR CX550 comes with a three-year warranty, while the Thermaltake Toughpower GT is backed by a more generous five-year warranty. This extended warranty from Thermaltake indicates greater confidence in the product's longevity and reliability, appealing to users who want to invest in a power supply for the long term.

Which should you buy?

In conclusion, choosing between the CORSAIR CX550 and the Thermaltake Toughpower GT ultimately depends on your specific needs. If you require an efficient, budget-friendly option for a mid-range build, the CORSAIR CX550 at $65.99 is an excellent choice. However, if you're building a high-performance system that demands more power and modern features, the Thermaltake Toughpower GT is worth the investment at $95.52. Its superior efficiency, higher wattage, and advanced cooling technology make it a compelling option for serious gamers and professionals.