Lian Li Unveils Revolutionary Psus With World-First Rotatable Inlet Design

The Lian Li RS1200G ATX 3.1 power supply unit (PSU) represents a significant milestone in the company’s pursuit of innovative design and exceptional performance. The PSU’s rotatable AC inlet, which allows users to shift modular cable connectors between rear and left-side positions, is a world-first innovation that fundamentally rethinks PSU orientation and cable management.

This feature alone distinguishes the RS1200G from conventional offerings, although it introduces specific compatibility requirements that potential buyers must carefully evaluate. The 24-pin connector placement creates an inherent limitation, as cases must accommodate behind-motherboard routing for at least the primary ATX cable, eliminating compatibility with chassis lacking appropriate cable management provisions.

Despite this restriction, the RS1200G’s design philosophy diverges dramatically from conventional PSU architecture. Modular cable connectors populate virtually every side of the chassis, enabling users to adapt to diverse case architectures while maintaining compact ATX dimensions. This feature, combined with the optional magnetic USB hub that can mount directly to the PSU, expands connectivity options for modern systems.

The Lian Li RS1200G’s exceptional electrical performance is a hallmark of its design. The PSU achieves average nominal load efficiency of 90.0% with 115 VAC input and 92.0% with 230 VAC input, measured across the 10% to 100% load range. These results comfortably satisfy 80 Plus Gold certification requirements, while Cybenetics Platinum certification is also awarded based on average efficiency calculations.

Efficiency peaks near 40% load and maintains fairly good stability across most operational ranges. Very low load efficiency remains good, an important characteristic for modern systems spending significant time in idle states. The fan initiates rotation when load exceeds approximately 300 Watts but maintains very low speeds up to 800 Watts. Beyond 900 Watts, fan speed increases substantially, though it still remains below half maximum capability.

Thermal management is adequate, although not exceptional. The compact 150mm chassis and overall topology, paired with a 135mm fan and good heatsinks on the primary side, create inherent cooling challenges at maximum power output. However, the fan remains inactive or operates at minimal speeds under moderate loads, contributing to excellent low-load acoustics.

Component selection demonstrates pragmatic engineering. EPCOS APFC capacitors and Infineon MOSFETs represent premium choices in critical high-stress positions. Teapo secondary capacitors occupy a middle ground between economy and premium Japanese alternatives, appropriate for the 10-year warranty period but not representing absolute top-tier specification.

Pricing positions the RS1200G at approximately $180, representing premium positioning justified by innovative features and solid electrical performance. Competition exists from conventional high-wattage units offering lower pricing but lacking the RS1200G’s distinctive capabilities. Value assessment depends heavily on individual compatibility requirements and appreciation for the rotational design innovation.

For builders with compatible cases seeking innovative solutions and exceptional power quality, the RS1200G merits serious consideration despite its premium pricing. Its performance at maximum load suggests the platform may be a little stressed at 1200 Watts, although it can deliver its maximum power output under adverse circumstances if necessary.

The Lian Li RS1200G ATX 3.1 PSU is an exceptional example of innovation and engineering competence in the power supply market. While it may not be the most affordable option, its features and performance make it a compelling choice for builders seeking premium quality and versatility.

Key specifications include:

• Input voltage: 100 - 240 VAC, 50 - 60 Hz
• Output: 20A @ 12V, 20A @ 5V, 100A @ 3.3V, 15W @ 5.25V, and 0W at other voltages
• Modular design with rotatable AC inlet for flexible cable management
• Optional magnetic USB hub for expanded connectivity options
• Compact 150mm chassis design to minimize space requirements
• 135mm fan with fluid dynamic bearing engine for improved cooling efficiency

In testing, the Lian Li RS1200G ATX 3.1 PSU demonstrated exceptional electrical performance, comprehensive protection features, and thoughtful accessory inclusion. The PSU’s maximum ripple was measured at 26 mV on the 12V rail, 14 mV on the 5V rail, and 14 mV on the 3.3V rail. Voltage regulation proved equally impressive, maintaining 0.9% on the 12V rail, 0.7% on the 5V rail, and 0.6% on the 3.3V rail.

The PSU’s protection features are comprehensive, with sharp OCP thresholds and OPP triggers at 110% during hot testing. The fan behavior shifts considerably under thermal stress, engaging earlier and increasing speed progressively until reaching maximum capacity.

Overall, the Lian Li RS1200G ATX 3.1 PSU is a top contender in the power supply market, offering exceptional electrical performance, comprehensive protection features, and thoughtful accessory inclusion. While it may have some compatibility limitations, its innovative design and engineering competence make it a compelling choice for builders seeking premium quality and versatility.

For builders with compatible cases, the Lian Li RS1200G ATX 3.1 PSU merits serious consideration despite its premium pricing. Its performance at maximum load suggests the platform may be a little stressed at 1200 Watts, although it can deliver its maximum power output under adverse circumstances if necessary.

Value assessment depends heavily on individual compatibility requirements and appreciation for the rotational design innovation. The Lian Li RS1200G ATX 3.1 PSU is priced at approximately $180, representing premium positioning justified by innovative features and solid electrical performance.