ASRock PRO-650G Power Supply - 650W 80 Plus Gold vs Lian Li SP750 V2 Gold
Updated August 2026 — ASRock PRO-650G Power Supply - 650W 80 Plus Gold wins on efficiency and protection, Lian Li SP750 V2 Gold wins on warranty and modularity.
The ASRock PRO-650G offers excellent value for budget-conscious users, while the Lian Li SP750 V2 Gold provides advanced features for high-performance builds.
Why ASRock PRO-650G Power Supply - 650W 80 Plus Gold is better
Price
ASRock is significantly cheaper at $49.99.
Warranty
3-year warranty is sufficient for most users.
Cooling
Quiet 120mm fan for effective cooling.
Why Lian Li SP750 V2 Gold is better
Warranty
10-year warranty indicates higher durability.
Form Factor
SFX form factor is ideal for compact builds.
Modularity
Fully modular design simplifies cable management.
Overall score
Specifications
| Spec | ASRock PRO-650G Power Supply - 650W 80 Plus Gold | Lian Li SP750 V2 Gold |
|---|---|---|
| Power Output | 650W | 750W |
| Efficiency | 80 PLUS Gold | 80 PLUS Gold |
| Modularity | Non-Modular | Fully Modular |
| Cooling Type | 120mm Fan | 92mm FDB Fan |
| Warranty | 3 Years | 10 Years |
Dimension comparison
Price Comparison
The ASRock PRO-650G is priced at $49.99, making it about 60% cheaper than the Lian Li SP750 V2 Gold, which retails for $124.99. This significant price difference is a crucial factor for budget-conscious consumers looking to build or upgrade their systems. ASRock’s offering provides a solid balance of features and performance at a lower cost, which may appeal to users with mid-range gaming or productivity needs. On the other hand, Lian Li’s higher price point reflects its advanced features and build quality, appealing to users who prioritize long-term reliability and efficiency.
Efficiency Ratings
Both power supplies boast 80 PLUS Gold certification, ensuring energy efficiency and reduced power consumption. This rating indicates that both the ASRock PRO-650G and the Lian Li SP750 V2 Gold can deliver up to 90% energy efficiency under typical loads. However, this similarity means that users will not find significant differences in terms of operational efficiency. Instead, the choice between the two units may come down to other features and usability preferences rather than efficiency alone.
Form Factor and Compatibility
The ASRock PRO-650G is designed in a standard ATX form factor, measuring 140x150x86mm, making it compatible with most PC cases. In contrast, the Lian Li SP750 V2 Gold adopts a more compact SFX form factor, specifically designed for smaller builds, measuring up to 63.5mm in width. This difference means that users with compact cases may prefer the Lian Li option, while those with standard ATX cases will find the ASRock power supply a suitable fit. Therefore, compatibility with existing hardware is essential when making a choice.
Cooling Solutions
The ASRock PRO-650G features a 120mm fan that operates quietly, ensuring efficient cooling during operation. Alternatively, the Lian Li SP750 V2 Gold is equipped with a premium 92mm Fluid Dynamic Bearing (FDB) fan, which is designed for low noise and long-lasting performance. While both power supplies prioritize quiet operation, the choice of fan size and type may influence the thermal performance and noise levels during intense gaming or heavy workloads. Users should consider their specific cooling requirements when selecting between these two options.
Cable Management
In terms of cable management, the ASRock PRO-650G includes a flat cable design that eases installation and enhances airflow within the case. This feature is particularly beneficial for builders who prioritize neatness and airflow efficiency. On the other hand, the Lian Li SP750 V2 Gold boasts a fully modular design, allowing users to connect only the cables they need based on their system configuration. This not only simplifies the build process but also reduces clutter inside the case, making cable management a clear advantage for those who favor modular setups.
Warranty and Support
The ASRock PRO-650G comes with a 3-year warranty, providing users with reliable manufacturer support for peace of mind. In comparison, the Lian Li SP750 V2 Gold offers a much more extended 10-year warranty, indicating the manufacturer’s confidence in the product's durability and performance. This difference in warranty duration could be a decisive factor for consumers looking for long-term investment protection, as Lian Li's commitment suggests a focus on high-quality components and performance.
User Experience and Installation
Both power supplies aim to provide a user-friendly experience. The ASRock PRO-650G is straightforward to install and includes dedicated support for product inquiries, which can enhance user confidence during installation. The Lian Li SP750 V2 Gold's fully modular design allows for a tailored installation, particularly benefiting users with specific cable management needs. While both offer ease of use, the modularity of the Lian Li unit may appeal to advanced users who want a custom setup, while the ASRock unit caters to those looking for simplicity.
Which should you buy?
Choosing between the ASRock PRO-650G and the Lian Li SP750 V2 Gold ultimately depends on your specific needs and budget. If you are looking for a cost-effective solution that provides solid performance for mid-range systems, the ASRock PRO-650G is an excellent choice at $49.99. It offers essential features like 80 PLUS Gold efficiency and a quiet fan, making it suitable for everyday use. Conversely, if you require a power supply that supports high-performance components with a compact form factor, along with a long warranty, the Lian Li SP750 V2 Gold at $124.99 is worth considering. Its fully modular design and superior build quality justify its higher price tag. Ultimately, the decision hinges on whether you prioritize budget or advanced features in your power supply selection.

