Lian Li Uni SL120 V2 fans deliver excellent build quality and installation methods, with a clean RGB implementation and improved cable management. STS Tutorial noted these fans offer best-in-class construction and a daisy-chaining capability that supports up to six fans per cable. However, the performance metrics were slightly behind Lian Li's AL120 V2 models, and they didn't outperform the Uni SL Infinities. The fans feature a proprietary controller system with 4-pin PWM, 3-pin ARGB, and USB 2.0 header connections, allowing for flexible mounting and control options.
Full review
Daisy-chain design evolution
Lian Li's Uni Fan SL120 V2 introduces a refined daisy-chain connection system that streamlines installation compared to previous models. The new design replaces the older thick plastic connectors with thinner, more compact plugs that connect to a hidden secondary male port underneath the main port. This change, according to one reviewer, makes the fans easier to hide but does not necessarily improve functionality. This approach significantly reduces cable clutter compared to standard fans that require separate PWM and RGB cables per unit.
The daisy-chain capability allows users to create clusters of up to four fans that operate as a single unit, with each cluster controlled independently through a single cable module. This setup eliminates the need for multiple cables and simplifies the internal configuration of PC builds. The controller features four designated ports, each capable of connecting to a cluster of four fans, enabling users to manage up to 16 fans with one controller. The new cable design is more compact and sits flush with the fan, reducing bulk and improving fitment in tight spaces like radiators or smaller cases.
STS-Tutorial noted that the V2 fans feature a more streamlined connection method compared to the older versions. The new approach uses a smaller plug that connects directly to the fan's secondary port, replacing the older slide-on connection. This modification makes the fans less obtrusive and easier to maneuver, particularly in tight spaces. Additionally, the interlocking pins on the V2 fans are now removable, contributing to a cleaner overall appearance. The fans also feature a 28mm thickness compared to the previous 25mm, which Lian Li claims improves performance due to better airflow and static pressure.
RGB lighting and visual design
The SL120 V2 fans feature extensive RGB lighting with 32 addressable LEDs arranged in two mirrored groups down each side of the fan frame. This design creates a total of four RGB strips that travel the length of the fan, providing vivid and customizable lighting effects. The RGB implementation is executed with a clean aesthetic, with no visible LEDs, resulting in an uncluttered appearance that maintains the fans' sleek profile. The lighting is controlled through Lian Li's L-Connect 3 software, which allows for precise adjustments to color, brightness, and lighting effects.
This improvement contributes to a more seamless visual experience when fans are linked together. The fans also feature a matte-black metal bracket on the sides of the frame that has been slimmed down and given a slightly different look, enhancing the overall visual appeal. The central hub housing the fluid dynamic bearing is smaller, creating longer wings and a more aggressive design compared to the AL120 V2 models.
The back of the fans has been redesigned to conceal the cables, reducing exposure and creating a cleaner look. The fans are available in both black and white color variants, with the white version featuring a more subdued aesthetic. The aluminum cover piece that was previously hidden under stickers now comes pre-installed, contributing to a cleaner appearance. The fans also feature a more aggressive wing design with longer wings and a smaller central hub, which contributes to a distinct visual identity compared to the AL120 V2 models.
Performance specifications and airflow
The SL120 V2 fans deliver 64.5 CFM of airflow at maximum speed, with a static pressure of 2.59 mmH2O, representing a slight improvement over the previous generation's 58.5 CFM and 2.54 mmH2O. These specifications are slightly behind those of the AL120 V2, which delivers 77.3 CFM and 2.97 mmH2O. The fans operate at a maximum speed of 2000 RPM, with a minimum speed of 250 RPM, allowing for a wide range of performance settings. The fans also support zero RPM mode, which is useful for maintaining low temperatures in idle conditions, with the fans automatically turning on when temperatures exceed a certain threshold.
However, in a noise-to-performance comparison, the SL120 V2s outperformed the AL120 V2s at lower speeds, demonstrating superior efficiency in quieter operation. The fans also feature a fluid dynamic bearing (FDB) technology that reduces friction and vibration, contributing to lower noise levels during operation. The fans are designed to operate silently at full speed, with a maximum acoustic noise of 29.2 dB(A).
The SL120 V2 fans are 28mm thick, an increase from the previous 25mm, which Lian Li claims improves performance due to better airflow and static pressure. The fans also feature an industrial-grade motor and extra magnetic support in the center hub to reduce vibration and ensure low noise levels. The fans are capable of operating at speeds from 250 to 2000 RPM, providing flexibility for different cooling needs. The fans are available in both black and white variants, with the white version designed to prevent damage when running at full brightness by limiting the maximum brightness to 75% when more than 11 fans are used.
Installation and mounting mechanics
Installation of the SL120 V2 fans is facilitated by Lian Li's proprietary controller, which connects to the motherboard via 4-pin PWM, 3-pin ARGB, and USB 2.0 headers. The fans are powered by two SATA power connectors, with one being mandatory and the second required only when exceeding 12 fans per controller. The fans can be connected using included single-fan cables or extension cables, allowing for flexible setup configurations. The mounting system uses a unique interlocking mechanism that allows fans to be linked together in groups of up to six, controlled by a single cable.
The mounting process involves connecting the controller to the motherboard and then connecting the fans to the controller using the provided cables. The fans can be linked together using either the included single-fan cables or extension cables, allowing for flexible setup configurations. The fans are secured using included screws and brackets, with the mounting system designed to be compatible with various PC cases. The fans' design allows for easy installation and removal, with the interlocking mechanism ensuring a secure fit without the need for additional tools.
One reviewer noted that the fans' mounting system is similar to previous versions but with improvements in cable management. The fans feature a more compact design that reduces bulk, making them easier to fit in tight spaces. The fans also include a small paper with warnings about running more than 8 AL140 V2 fans or 11 AL120 V2 fans at full brightness to prevent damage. The mounting brackets are designed to be compatible with various PC cases, and the fans can be easily adjusted to different positions within the case.
Software control and user experience
Lian Li's L-Connect 3 controller software provides comprehensive control over fan speed and lighting effects. The software features a clean and straightforward interface that allows users to intuitively control either a single cluster of fans or all four clusters simultaneously. The software also includes a synchronization feature that allows users to pass control of the fans to the motherboard software, enabling seamless integration with existing PC cooling setups. The software supports independent control of each fan cluster, allowing for customized cooling and lighting configurations.
The software interface is designed to be user-friendly, with a clean layout that makes it easy to adjust fan RPM, colors, brightness, and lighting effects. Users can control individual clusters or all clusters simultaneously, providing flexibility for different cooling needs. The software also includes a feature to synchronize fan control with motherboard software, allowing for seamless integration with existing PC cooling setups. The interface is intuitive and provides clear visual feedback, making it easy for users to customize their cooling and lighting configurations.
While the L-Connect 3 software is praised for its ease of use, some reviewers noted that it is not the most advanced solution available. However, it provides sufficient functionality for most users, especially those who prefer to avoid proprietary software. The software allows for independent control of each fan cluster, enabling users to create customized cooling and lighting configurations. The software also supports the ability to control fans through the motherboard, providing a seamless integration with existing PC cooling setups.
Comparison with AL120 V2 models
The SL120 V2 fans are positioned as a more affordable alternative to the AL120 V2 models, with a slight performance trade-off in terms of airflow and static pressure. The AL120 V2 delivers 77.3 CFM and 2.97 mmH2O, while the SL120 V2 delivers 64.5 CFM and 2.59 mmH2O. Despite these differences, both models share similar design elements and features, including the daisy-chain capability, RGB lighting, and fluid dynamic bearing technology. The SL120 V2 is designed to offer a balance between performance and cost, making it suitable for users who require reliable cooling without the premium price tag of the AL120 V2.
The SL120 V2 fans were able to maintain a CPU temperature of 46.7°C above ambient at maximum speed, compared to 45.6°C for the AL120 V2. However, in quieter operation, the SL120 V2s outperformed the AL120 V2s, demonstrating superior efficiency in noise reduction. The SL120 V2 fans also feature a more compact design and improved cable management, making them easier to install and use in tight spaces.
The SL120 V2 fans are designed to be more accessible to a broader range of users, with a focus on ease of installation and cost-effectiveness. The fans are available in both black and white variants, with the white version designed to prevent damage when running at full brightness. The fans also feature a more aggressive wing design with longer wings and a smaller central hub, which contributes to a distinct visual identity compared to the AL120 V2 models. The SL120 V2 fans are positioned as a solid choice for users who want reliable cooling with a clean aesthetic and simplified installation process.
Strengths
- +Best-in-class build quality with sturdy black frame and fan wing
- +2x RGB lines across fan frame with clean, no-visible-LED implementation
- +Daisy chainable up to 6 fans with single cable control
Watch-outs
- −Max performance could be better than competitors
- −Did not outperform the Uni SL Infinities
How it compares
The Lian Li Uni Fan SL120 V2 Standard leads in daisy-chaining capability with support for up to 6 fans per cable, a feature not available in the Phanteks T30 R PST or Thermaltake Riing Quad 12 RGB Radiator Fan TT Premium Edition. While it offers excellent build quality and clean RGB implementation, it doesn't match the airflow performance of the Noctua NF-A12x25 chromax.black.swap or the Phanteks T30 R PST.
Rating sources
“Lian Li Uni SL120 V2 Review Introduction Lian Li just updated their SL120 fans to meet their newest standards. Lets take a closer look at the improvements that the Lian Li Uni SL120 V2s are coming with!”
“Lian Li does this with the UNI FAN SL120's with a rather ingenious way to connect them together.”
“I do like that improvement uh it allows you to easily maneuver them because once they're plugged in they're very flat cables they made them flat so it's it's uh it's really nice”
Our 4.3 score is the average of the 3 scored reviews above; 1 more reviewed it without printing a score and is not in the average. Ratings marked * were derived from the reviewer’s written analysis or video transcript — the publisher didn’t print an explicit numeric score, so we inferred one from their own words. Click through to verify. More about methodology.
