ASUS ROG Strix 1200W Platinum vs Lian Li SX1200P Platinum Compact ATX Form Factor
Updated August 2026 — ASUS ROG Strix 1200W Platinum leads on cooling and cable management.
The ASUS ROG Strix 1200W Platinum excels in advanced technology and performance, while the Lian Li SX1200P Platinum offers great value at a lower price.
Why ASUS ROG Strix 1200W Platinum is better
Price
ASUS is more expensive but offers superior features.
Efficiency
GaN MOSFET technology provides better power efficiency.
Cooling
Larger heatsinks and dual ball bearings enhance cooling performance.
Why Lian Li SX1200P Platinum Compact ATX Form Factor is better
Price
Lian Li is 39% cheaper than ASUS.
Size
Compact design fits in tighter spaces.
Support
Explicit RMA support for customer service.
Overall score
Specifications
| Spec | ASUS ROG Strix 1200W Platinum | Lian Li SX1200P Platinum Compact ATX Form Factor |
|---|---|---|
| Power | 1200W | 1200W |
| Efficiency | 80 Plus Platinum | 80 Plus Platinum |
| Warranty | 10 years | 10 years |
| Cooling Tech | GaN MOSFET | Smart Cooling |
| Connectors | 12V-2x6 | 6+2 PCIe |
Dimension comparison
Price Comparison
The ASUS ROG Strix 1200W Platinum is priced at $264.99, while the Lian Li SX1200P Platinum comes in at $159.99. This makes the Lian Li about 39% cheaper than the ASUS model. While price is not the only factor to consider, it plays a significant role for budget-conscious consumers. The ASUS ROG Strix offers a range of advanced features that justify its higher price, but the Lian Li still packs a punch with its own set of premium qualities for a lower cost.
Power Efficiency
Both power supplies boast an 80 Plus Platinum certification, ensuring high energy efficiency. The ASUS ROG Strix achieves this with low-ESR capacitors and premium components, delivering industry-leading power efficiency. The Lian Li similarly claims up to 92% efficiency at 50% load, which is impressive. However, the ASUS model distinguishes itself with its GaN MOSFET technology, providing superior power efficiency by up to 30%. This advanced technology makes the ROG Strix a solid choice for users seeking maximum energy savings and performance.
Cooling Capabilities
The ASUS ROG Strix features large heatsinks designed to lower temperatures and noise compared to reference designs, ensuring stable performance even under heavy loads. Its dual ball fan bearings can last up to twice as long as traditional sleeve bearings, enhancing durability. The Lian Li SX1200P, on the other hand, boasts smart cooling technology with a fanless mode at loads below 40%, allowing for silent operation. While both models excel in cooling, the ASUS offers a more robust design for high-performance gaming rigs, while the Lian Li emphasizes quiet operation.
Connectivity Options
Connectivity is crucial for modern power supplies, and both models provide ample support. The ASUS ROG Strix features a native 12V-2x6 connector, making it PCIe 5.0 ready for the latest graphics cards. This ensures compatibility with next-gen hardware, which is a significant advantage for gamers and PC builders. The Lian Li SX1200P also includes ample PCIe 6+2 connectors, allowing users to power multiple accessories seamlessly. While both units offer excellent connectivity, the ASUS model is specifically tailored for future-proofing with next-gen components.
Build Quality
In terms of build quality, the ASUS ROG Strix is backed by a 10-year warranty, which speaks volumes about its durability and reliability. Its use of premium components enhances its overall lifespan. The Lian Li SX1200P also offers a 10-year warranty, along with 100% Japanese 105°C-rated capacitors for enhanced performance under thermal stress. While both power supplies are well-built, the ASUS model’s focus on high-end materials and design gives it an edge for users who prioritize longevity and reliability in demanding environments.
Noise Levels
Noise levels can significantly impact the user experience, especially in gaming setups. The ASUS ROG Strix incorporates 0dB technology, allowing for silent operation during light gaming sessions. This feature is particularly appealing for users who value a quieter environment. The Lian Li SX1200P also features smart cooling technology, which includes a fanless mode for loads under 40%. This design effectively minimizes noise, making both units excellent choices for quiet operation. However, the ASUS ROG Strix’s dedicated silent mode during light tasks gives it a slight advantage in this category.
Warranty and Support
Both the ASUS ROG Strix and Lian Li SX1200P come with a 10-year warranty, reflecting the manufacturers' confidence in their products. However, the Lian Li model explicitly mentions RMA support for missing parts or cable color issues, which can be a significant factor for users looking for reliable customer service. While the ASUS brand is known for its strong customer support, the Lian Li’s emphasis on responsive service may appeal to those who prioritize post-purchase assistance.
Which should you buy?
Deciding between the ASUS ROG Strix 1200W Platinum and the Lian Li SX1200P Platinum ultimately depends on your specific needs and budget. If you prioritize cutting-edge technology, superior power efficiency, and a focus on high-performance gaming, the ASUS model is worth the investment. However, if you are looking for a reliable power supply at a more accessible price point, the Lian Li offers excellent performance and features without breaking the bank.

