JUSTOP Black 650W PSU vs Gigabyte P750BS 80 Plus Bronze Non Modular 750w Power Supply Unit
Updated August 2026 — The Gigabyte P750BS offers better efficiency and power output, making it a superior choice despite the higher price.
The Gigabyte P750BS offers better efficiency and power output, making it a superior choice despite the higher price.
Why JUSTOP Black 650W PSU is better
lower price
JUSTOP Black PSU costs £29.99
connector variety
JUSTOP has more connector options
basic features
JUSTOP includes essential protection features
Why Gigabyte P750BS 80 Plus Bronze Non Modular 750w Power Supply Unit is better
higher wattage
Gigabyte P750BS provides 750W power output
efficiency certification
Gigabyte is 80 PLUS Bronze certified
quieter operation
Gigabyte has a Silent Fluid Dynamic Bearing fan
Overall score
Specifications
| Spec | JUSTOP Black 650W PSU | Gigabyte P750BS 80 Plus Bronze Non Modular 750w Power Supply Unit |
|---|---|---|
| Brand | JUSTOP | Gigabyte |
| Model | Black 650W | P750BS |
| Cooling Type | Standard Fan | FDB Fan |
| Protection | Basic | Comprehensive |
| Certification | None | 80 PLUS Bronze |
Dimension comparison
Price Comparison
The JUSTOP Black 650W PSU is priced at £29.99, while the Gigabyte P750BS 80 Plus Bronze Non Modular 750W Power Supply Unit is significantly higher at £65.01. This represents a price difference of £35.02, making the JUSTOP model a more budget-friendly option for users looking to save on their power supply purchase. However, the higher price of the Gigabyte unit could be justified by its 80 PLUS Bronze certification and additional power capacity, which may appeal to users seeking better efficiency and performance.
Power Output
When it comes to power output, the Gigabyte P750BS offers a higher capacity of 750W compared to the 650W provided by the JUSTOP Black PSU. This additional 100W can be crucial for users with high-performance systems or those looking to future-proof their builds. The single +12V rail in the Gigabyte unit also ensures stable power delivery, which can enhance system reliability during peak loads, making it a strong contender for gaming or workstation setups.
Efficiency and Certification
The Gigabyte P750BS boasts an 80 PLUS Bronze certification, indicating it operates with higher energy efficiency compared to non-certified units. This certification means that the power supply can deliver at least 82% efficiency at typical load conditions, which can lead to lower electricity bills and less heat generation. In contrast, the JUSTOP Black PSU does not mention any efficiency certification, suggesting it may not deliver the same level of performance in energy savings, which could be a consideration for environmentally conscious consumers.
Cooling Mechanism
Both power supplies feature a 120mm fan for cooling, but the Gigabyte P750BS is equipped with a Silent Fluid Dynamic Bearing (FDB) fan, designed for quieter operation. This could be particularly beneficial for users who value a silent computing experience, such as those working in quiet environments or gaming setups. The JUSTOP model, while it also includes a 120mm cooling fan, does not specify the type, which might imply a less advanced cooling solution, potentially resulting in louder operation under heavy load.
Connector Options
In terms of connectivity, the JUSTOP Black PSU provides a variety of connectors including a 20+4 pin, 4+4 pin, multiple SATA, Molex, and PCIe connectors, which makes it quite versatile for different builds. The Gigabyte P750BS, while offering a single +12V rail and multiple protection features, does not detail its connector options, leaving users to wonder about its compatibility with various components. For users needing specific connector types, the JUSTOP's detailed offerings might provide an advantage.
Protection Features
Both power supplies come with a range of protective features. The JUSTOP Black PSU includes over voltage protection, over power protection, short circuit protection, and thermal overload cut-off protection. Similarly, the Gigabyte P750BS also has multiple protective features including OVP, OPP, SCP, UVP, OCP, and OTP. While both units promise system safety, the extensive list of protection mechanisms in the Gigabyte model may appeal to consumers prioritising comprehensive safeguard measures for their components.
Brand Reputation
Brand reputation can play a significant role in purchasing decisions. Gigabyte is a well-established name in the PC hardware market, known for producing reliable and high-quality components. Meanwhile, JUSTOP, although offering an attractive price point, may not have the same recognition or trust factor among consumers. This could influence potential buyers who are looking for proven reliability and after-sales support, particularly for critical components like power supplies.
Which should you buy?
Ultimately, the choice between the JUSTOP Black 650W PSU and the Gigabyte P750BS 80 Plus Bronze Non Modular 750W Power Supply Unit depends on individual needs and priorities. If budget is a primary concern and your power requirements are modest, the JUSTOP model offers a good entry-level option at £29.99. However, for those seeking higher efficiency, better cooling performance, and enhanced stability with a higher wattage output, the Gigabyte unit at £65.01 provides significant advantages that could justify the increased cost. Consider your system's requirements and your budget when making your final decision.
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