Lian Li SP750 V2 Gold vs Thermaltake Smart BM3 750W 80Plus Bronze ATX 3.1 &
Updated August 2026 — Lian Li SP750 V2 Gold leads on warranty and efficiency.
The Lian Li SP750 V2 Gold offers superior efficiency and modularity, while the Thermaltake Smart BM3 is a budget-friendly option with solid features.
Why Lian Li SP750 V2 Gold is better
Efficiency
Lian Li has an 80+ Gold rating compared to Thermaltake's 80 Plus Bronze.
Modularity
Lian Li is fully modular, enhancing cable management.
Warranty
Lian Li offers a 10-year warranty versus 5 years for Thermaltake.
Why Thermaltake Smart BM3 750W 80Plus Bronze ATX 3.1 & is better
Price
Thermaltake is significantly cheaper at $75.99.
Fan Size
Thermaltake has a larger 120mm fan for potentially better airflow.
Japanese Capacitors
Thermaltake uses high-quality Japanese capacitors.
Overall score
Specifications
| Spec | Lian Li SP750 V2 Gold | Thermaltake Smart BM3 750W 80Plus Bronze ATX 3.1 & |
|---|---|---|
| Efficiency Rating | 80+ Gold | 80 Plus Bronze |
| Modularity | Fully Modular | Semi-Modular |
| Fan Type | 92mm FDB | 120mm FDB |
| Warranty | 10 Years | 5 Years |
| Connector Type | Native 12V-2x6 | PCIe Gen 5 |
Dimension comparison
Price Comparison
The Lian Li SP750 V2 Gold is priced at $124.99, while the Thermaltake Smart BM3 750W costs $75.99, making the Thermaltake model about 39% cheaper. This substantial price difference can be a deciding factor for many users. However, the lower price of the Thermaltake does not necessarily indicate inferior quality. Both power supplies offer modern features that cater to today’s hardware demands, but consumers should weigh the cost against the value of each model's specifications and performance.
Efficiency Ratings
The Lian Li SP750 V2 Gold boasts an 80+ Gold efficiency rating, which signifies that it operates with high efficiency, minimizing energy waste. In contrast, the Thermaltake Smart BM3 has an 80 Plus Bronze rating, indicating slightly lower efficiency. The difference in efficiency could translate to lower electricity bills over time when using the Lian Li. However, for users on a budget or those who do not run power-hungry systems continuously, the Thermaltake's Bronze rating may still be adequate for their needs.
Build Quality and Components
Lian Li emphasizes high-quality components in their SP750 V2 Gold, featuring a native 12V-2x6 cable and a 92mm Fluid Dynamic Bearing (FDB) fan designed for low noise operation. The 10-year warranty also reflects the manufacturer's confidence in the product's durability. On the other hand, the Thermaltake Smart BM3 utilizes Japanese 105°C capacitors, indicating robust build quality as well. It also features a 120mm FDB fan with a Smart Zero Fan function that minimizes noise by keeping the fan off until the load exceeds 20%. Both power supplies are made with quality components, but the longer warranty from Lian Li may sway users who prioritize longevity.
Modularity
The Lian Li SP750 V2 Gold offers a fully modular design, allowing users to connect only the cables they need for their specific build, which can enhance airflow and cable management. Conversely, the Thermaltake Smart BM3 is semi-modular, meaning some cables are permanently attached. While this can simplify installation, it may also lead to more clutter in cases with limited airflow. For users who value a clean, organized setup, the fully modular design of the Lian Li may be more appealing.
Cooling Solutions
Both power supplies feature efficient cooling solutions. The Lian Li SP750 V2 Gold is equipped with a 92mm FDB fan, while the Thermaltake Smart BM3 has a slightly larger 120mm FDB fan. The larger fan in the Thermaltake may provide better airflow, especially under load, and the Smart Zero Fan function helps reduce noise during low power usage. However, the Lian Li’s focus on low noise and effective cooling also presents a compelling advantage for users seeking quieter operation in their builds.
Compatibility and Standards
Both the Lian Li SP750 V2 Gold and the Thermaltake Smart BM3 comply with ATX 3.1 standards and are PCIe Gen 5 ready. The Lian Li's native 12V-2x6 connector is specifically designed for high-performance graphics cards, which is a crucial consideration for gamers and professionals alike. While the Thermaltake also supports these modern standards, its semi-modular nature might limit some customization in cable management. Those building high-end systems may find the Lian Li's specifications particularly beneficial.
Warranty and Customer Support
Lian Li offers an impressive 10-year warranty on the SP750 V2 Gold, which is significantly longer than the 5-year warranty provided with the Thermaltake Smart BM3. This extended warranty can provide peace of mind for users who plan to invest in a reliable power supply for the long term. While the 5-year warranty of the Thermaltake is still commendable, the added assurance from Lian Li could be a decisive factor for those seeking longevity and reliability in their hardware.
Which should you buy?
Choosing between the Lian Li SP750 V2 Gold and the Thermaltake Smart BM3 ultimately depends on your specific needs and budget. If you prioritize efficiency, modularity, and a longer warranty, the Lian Li SP750 V2 Gold is the superior choice despite its higher price of $124.99. However, if you are looking for a more budget-friendly option without sacrificing modern features, the Thermaltake Smart BM3 at $75.99 offers excellent value for its 80 Plus Bronze certification and reliable performance. Evaluating your priorities will guide you to the right decision for your power supply needs.

