The EVGA 750 BQ is a mid-range power supply with a rated power of 750W and an 80PLUS Bronze certification, while the SeaSonic Vertex GX-1200 offers higher capacity at 1200W with an 80PLUS Gold certification. Key differences include the modular design: EVGA features a semi-modular setup for easier cable management, and SeaSonic provides full modularity for a cleaner build. Additionally, the EVGA 750 BQ weighs 2.795kg and has dimensions of 150×165×86mm, whereas the SeaSonic Vertex GX-1200 is more compact at 160×150×86mm and tips the scales at 1.97kg, making it suitable for smaller cases.

Performance-wise, the EVGA 750 BQ delivers reliable power for mid-range systems, with outputs supporting up to 750W, suitable for gaming rigs and workstations. Its 80PLUS Bronze certification ensures decent efficiency, though not as optimized as the SeaSonic model. In contrast, the SeaSonic Vertex GX-1200 excels in high-demand scenarios, providing 1200W power with an 80PLUS Gold certification for better energy efficiency and stability under heavy loads. User reviews highlight the SeaSonic's superior cooling and consistency, making it ideal for overclocking and high-performance applications, while the EVGA 750 BQ is praised for its durability in standard builds.

The EVGA 750 BQ is priced at ¥659 with a lowest price of ¥659, offering a good balance of power and affordability. Its power-to-price ratio is approximately 1.15 W/¥, making it cost-effective for standard users. On the other hand, the SeaSonic Vertex GX-1200 has a lowest price of ¥1763, with a power output of 1200W, resulting in a lower ratio of 0.72 W/¥. This means the EVGA is more economical for budget-conscious buyers, while the SeaSonic provides better long-term value for high-performance needs due to its efficiency and durability.

For budget-conscious users and those building mid-range gaming systems, the EVGA 750 BQ is an excellent choice due to its reliable performance and lower price. It is suitable for systems with moderate power requirements, such as gaming PCs with mid-level GPUs. Conversely, SeaSonic Vertex GX-1200 is recommended for high-performance enthusiasts and builders who need robust power delivery for overclocking and demanding applications, offering superior efficiency and build quality. Both products prioritize safety with multiple protection features, but SeaSonic's full modularity and higher wattage make it ideal for future-proofing systems.