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- Best overall: Lian Li UNI FAN SL-INF 120 Black Triple Pack
- Best budget: Noctua NT-H2 3.5g Thermal Compound
- Best premium: Lian Li UNI FAN SL-INF 120 Black Triple Pack
- Best for a single 140mm mount: Lian Li UNI FAN SL-INF 140 Black Single Pack
- Noctua NT-H2 is thermal paste for improving contact between a processor and its cooler; Lian Li UNI FAN SL-INF fans move air through a PC case.
- The Noctua NT-H2 3.5g Thermal Compound is the practical pick for most processor upgrades, while the 10g size suits repeat builds.
- The Lian Li UNI FAN SL-INF 120 Triple Pack Black pairs three 120mm fans with a controller for a coordinated case build.
- Choose a 140mm fan for a compatible 140mm mount, or a reverse-blade fan when the visible side and airflow direction both matter.
- Check cooler compatibility, case mounts, fan headers and controller requirements before choosing either product.
Noctua NT-H2 thermal paste and Lian Li UNI FAN SL-INF fans solve different PC-cooling problems, so the right Black Friday 2026 choice depends on whether you need a thermal interface material or case airflow. We researched and compared specs, reviews and owner feedback to make the distinction clear and identify the most useful options.
Noctua NT-H2 goes between a processor and its cooler; Lian Li UNI FAN SL-INF models attach to compatible case or radiator mounts and circulate air. My pick for most people replacing old thermal compound is the Noctua NT-H2 3.5g Thermal Compound. Builders choosing lighting and airflow should compare fan size, blade direction, noise, included controller and motherboard connections instead.
How We Picked
- Noctua NT-H2 and Lian Li UNI FAN SL-INF products were compared by intended job, so thermal paste is not ranked as a substitute for a case fan.
- The listed specifications focus on practical details: paste quantity, fan dimensions, rotational speed, airflow and static pressure.
- Product roles include small maintenance jobs, repeat builds, standard 120mm mounting, 140mm mounting and reverse-blade layouts.
- Recommendations account for included accessories, especially controller bundles, while reminding buyers to check the exact package contents.
- Owner feedback and published specifications informed the guide; recommendations do not claim research.
Comparison Table
| Product | Best for | Quantity or fan count | Maximum speed | Maximum airflow |
|---|---|---|---|---|
| Noctua NT-H2 3.5g Thermal Compound | Single PC upgrades | 3.5 g | Not applicable | Not applicable |
| Noctua NT-H2 10g Thermal Compound | Frequent builds | 10 g | Not applicable | Not applicable |
| Noctua NT-H1 3.5g Thermal Compound | Occasional CPU maintenance | 3.5 g | Not applicable | Not applicable |
| Lian Li UNI FAN SL-INF 120 Black Single Pack | One 120mm fan | 1 fan | 2,100 RPM | 61.3 CFM |
| Lian Li UNI FAN SL-INF 120 Black Triple Pack | Three-fan 120mm build | 3 fans | 2,100 RPM | 61.3 CFM per fan |
| Lian Li UNI FAN SL-INF 140 Black Single Pack | One 140mm mount | 1 fan | 1,600 RPM | 69.3 CFM |
| Lian Li UNI FAN SL-INF 120 Reverse Blade Black Single Pack | Reverse-blade layout | 1 fan | 2,000 RPM | 63.6 CFM |
Best Picks Reviewed
#1
Noctua NT-H2 3.5g Thermal Compound
The Noctua NT-H2 3.5g Thermal Compound is the best thermal paste for a single processor refresh or occasional PC maintenance. The Noctua NT-H2 3.5g Thermal Compound's 3.5g syringe offers a practical amount for several typical applications, with cleaning wipes included in the standard package.
Best for: Single PC upgrades and routine CPU cooler servicing
- Compound
- NT-H2
- Quantity
- 3.5 g
- Package
- Syringe and 3 cleaning wipes
- Useful quantity for a typical home builder
- Designed for CPU and GPU applications
- Includes cleaning wipes in the standard package
- Does not include a cooler or fan
- A small syringe is less suited to frequent builds
Is the Noctua NT-H2 3.5g Thermal Compound worth buying on Black Friday 2026?
Yes. The Noctua NT-H2 3.5g Thermal Compound is a sensible choice for a processor cooler refresh, with enough compound for more than one typical application and cleaning wipes included in the standard package.
See today’s Black Friday price on Amazon
#2
Noctua NT-H2 10g Thermal Compound
The Noctua NT-H2 10g Thermal Compound is the best thermal paste for builders who service multiple PCs or assemble systems regularly. The Noctua NT-H2 10g Thermal Compound's 10g syringe provides substantially more compound than the 3.5g option for a home maintenance kit.
Best for: Frequent upgrades and multiple PC builds
- Compound
- NT-H2
- Quantity
- 10 g
- Package type
- Syringe
- Large quantity for repeated applications
- Same NT-H2 compound as the smaller syringe
- Useful for repair benches and multi-PC households
- More compound than most one-time upgrades need
- Does not add case airflow or cooling hardware
Is the Noctua NT-H2 10g Thermal Compound worth buying on Black Friday 2026?
Yes. The Noctua NT-H2 10g Thermal Compound suits builders who handle several systems and want one larger syringe for repeated maintenance. Single-PC owners should compare the smaller 3.5g version before choosing.
See today’s Black Friday price on Amazon
#3
Noctua NT-H1 3.5g Thermal Compound
The Noctua NT-H1 3.5g Thermal Compound is the best alternative paste for PC owners who want a compact syringe from Noctua. The Noctua NT-H1 3.5g Thermal Compound's 3.5g quantity fits occasional processor servicing without buying a larger supply.
Best for: Occasional CPU cooler maintenance
- Compound
- NT-H1
- Quantity
- 3.5 g
- Package type
- Syringe
- Compact quantity for occasional use
- Suitable for processor cooler installation
- Simple syringe application
- Older Noctua compound option than NT-H2
- No fan or lighting features
Is the Noctua NT-H1 3.5g Thermal Compound worth buying on Black Friday 2026?
Yes. The Noctua NT-H1 3.5g Thermal Compound is a straightforward option for occasional CPU cooler servicing. Choose the Noctua NT-H2 range instead when you want the newer compound family or a larger syringe size.
See today’s Black Friday price on Amazon
#4
Lian Li UNI FAN SL-INF 120 Black Single Pack
The Lian Li UNI FAN SL-INF 120 Black Single Pack is the best individual fan for a 120mm mount and a coordinated lighting build. The Lian Li UNI FAN SL-INF 120 Black Single Pack's 120mm frame and maximum 2,100 RPM speed suit buyers who need one matching replacement or an additional fan.
Best for: One 120mm replacement fan
- Fan size
- 120 x 120 x 25 mm
- Maximum speed
- 2,100 RPM
- Maximum airflow
- 61.3 CFM
- Maximum noise
- 29 dBA
- Single-fan package for targeted upgrades
- Infinity-mirror lighting design
- Designed for Lian Li daisy-chain connections
- A single fan does not provide a three-fan set
- Check controller and cable needs before ordering
Is the Lian Li UNI FAN SL-INF 120 Black Single Pack worth buying on Black Friday 2026?
Yes. The Lian Li UNI FAN SL-INF 120 Black Single Pack suits a compatible 120mm mount and provides a 2,100 RPM maximum speed. Confirm the package and controller requirements before adding it to an existing fan group.
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#5 · Top pick
Lian Li UNI FAN SL-INF 120 Black Triple Pack
The Lian Li UNI FAN SL-INF 120 Black Triple Pack is the best all-around choice for a three-fan 120mm case layout. The bundle includes 3 fans and a controller, making coordinated installation more convenient than sourcing every component separately.
Best for: Three-fan case builds with coordinated lighting
- Fan count
- 3
- Fan size
- 120 x 120 x 25 mm
- Maximum speed
- 2,100 RPM
- Controller
- Included
- Three matching fans in one bundle
- Controller included in the standard triple pack
- Suitable for coordinated case layouts
- Requires three compatible 120mm mounts
- More fans than a single replacement requires
Is the Lian Li UNI FAN SL-INF 120 Black Triple Pack worth buying on Black Friday 2026?
Yes. The Lian Li UNI FAN SL-INF 120 Black Triple Pack is a convenient choice for a three-fan 120mm layout, and the standard bundle includes a controller. Check case clearance and the exact package contents before purchase.
See today’s Black Friday price on Amazon
#6
Lian Li UNI FAN SL-INF 140 Black Single Pack
The Lian Li UNI FAN SL-INF 140 Black Single Pack is the best individual choice for a compatible 140mm fan mount. The Lian Li UNI FAN SL-INF 140 Black Single Pack's 140mm frame and maximum 1,600 RPM speed suit builders who want a larger matching fan without replacing a full set.
Best for: One compatible 140mm case or radiator mount
- Fan size
- 140 x 140 x 25 mm
- Maximum speed
- 1,600 RPM
- Maximum airflow
- 69.3 CFM
- Maximum noise
- 28.6 dBA
- Larger 140mm frame for compatible mounts
- Infinity-mirror lighting styling
- Useful for a single-fan replacement
- Does not fit a 120mm-only mount
- Single pack does not include a three-fan set
Is the Lian Li UNI FAN SL-INF 140 Black Single Pack worth buying on Black Friday 2026?
Yes. The Lian Li UNI FAN SL-INF 140 Black Single Pack is a good match for a compatible 140mm mount, with a 69.3 CFM maximum airflow rating. Verify case or radiator clearance before selecting this larger frame.
See today’s Black Friday price on Amazon
#7
Lian Li UNI FAN SL-INF 120 Reverse Blade Black Single Pack
The Lian Li UNI FAN SL-INF 120 Reverse Blade Black Single Pack is the best individual 120mm option for a layout that needs reverse-blade airflow with the fan's presentation side visible. The Lian Li UNI FAN SL-INF 120 Reverse Blade Black Single Pack's maximum speed is 2,000 RPM.
Best for: Showcase builds with reverse-blade fan placement
- Fan size
- 120 x 120 x 25 mm
- Maximum speed
- 2,000 RPM
- Maximum airflow
- 63.6 CFM
- Maximum noise
- 29 dBA
- Reverse-blade design supports showcase layouts
- 120mm format fits many standard mounts
- Infinity-mirror lighting matches the SL-INF family
- Airflow direction differs from a standard-blade fan
- Check orientation and system airflow plan
Is the Lian Li UNI FAN SL-INF 120 Reverse Blade Black Single Pack worth buying on Black Friday 2026?
Yes. The Lian Li UNI FAN SL-INF 120 Reverse Blade Black Single Pack is a useful choice when a showcase layout needs reverse-blade airflow and a visible fan face. Confirm the intended intake or exhaust direction during installation.
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What is the difference between Noctua NT-H2 and Lian Li UNI FAN SL-INF?
Noctua NT-H2 thermal compound transfers heat between a processor and its cooler, while Lian Li UNI FAN SL-INF fans move air through a computer case. The products perform separate jobs and are not direct substitutes.
Choose Noctua NT-H2 when the cooler is already installed and a processor refresh calls for new thermal paste. The 3.5g syringe is suited to occasional maintenance; the 10g version fits multiple builds. Choose a Lian Li UNI FAN SL-INF when you need a case fan, want coordinated lighting or are replacing a compatible fan.
A complete cooling setup can use both product types: thermal paste at the processor and fans in the case. Match each purchase to the actual problem rather than comparing paste quantity with fan speed.
Which Lian Li UNI FAN SL-INF size should I choose?
Lian Li UNI FAN SL-INF 120 fans fit compatible 120mm mounts, while the Lian Li UNI FAN SL-INF 140 Black Single Pack needs a 140mm mounting position. The case, radiator or cooler specification decides which size fits.
Check the mounting holes, frame thickness and available clearance before ordering. A 140mm fan does not fit a 120mm-only position, and front panels or radiators can limit depth. Builders replacing a single fan should also check whether the existing unit is 120mm or 140mm.
The 120mm triple pack suits a planned three-fan layout. A single pack makes more sense for one failed fan or one open mount. Fan count and size matter more than appearance when fit is uncertain.
What does reverse blade mean on a Lian Li UNI FAN SL-INF fan?
The Lian Li UNI FAN SL-INF 120 Reverse Blade Black Single Pack uses a reverse-blade layout to support a different airflow direction while keeping the desired fan face visible. The exact intake or exhaust result depends on how the fan is mounted.
Reverse-blade fans help builders plan a showcase interior without showing the conventional rear side of every intake fan. Before installation, confirm the airflow arrows on the frame and compare them with the case's intake and exhaust plan.
A standard-blade SL-INF fan is the simpler choice when the visible fan side is not important. A reverse-blade model is most useful when appearance and airflow direction both matter.
Does the Lian Li UNI FAN SL-INF 120 Triple Pack include a controller?
The standard Lian Li UNI FAN SL-INF 120 Black Triple Pack includes 3 fans and a controller. The controller helps manage the compatible fan group and lighting, but buyers should verify the exact bundle contents for the listing they select.
The single-fan Lian Li UNI FAN SL-INF 120 Black Single Pack is a different package and should not be assumed to contain the triple-pack accessories. Check available headers, controller connections and cable compatibility with the motherboard before building.
The controller bundle suits a new three-fan installation. A one-fan replacement is easier to plan around the fan and control hardware already in the PC.
Can Noctua NT-H2 and Lian Li UNI FAN SL-INF improve the same PC?
Noctua NT-H2 and Lian Li UNI FAN SL-INF fans can serve one PC because thermal paste and case fans address different parts of heat management. Noctua NT-H2 sits between the processor and cooler; Lian Li fans circulate air through the enclosure.
For a processor cooler removal or upgrade, clean the old compound and apply fresh thermal paste according to the cooler and processor guidance. For case airflow, arrange compatible intake and exhaust fans with unobstructed paths.
Neither purchase replaces the other. Pick the item that addresses the current limitation, and check the full cooling setup if processor temperatures or case airflow remain a concern.
Buying Guide
Choose thermal paste for processor maintenance
Noctua NT-H2 3.5g Thermal Compound suits a typical one-PC refresh, while the 10g syringe suits repeat builds. Confirm the cooler is being removed or installed before buying compound; a case fan does not replace thermal paste.
Match fan dimensions to the mount
Lian Li UNI FAN SL-INF 120 models require a compatible 120mm position, and the 140 model requires a 140mm mount. Check thickness and radiator or panel clearance as well as the frame width.
Plan the number of fans and controller
The Lian Li UNI FAN SL-INF 120 Black Triple Pack bundles 3 fans and a controller. Compare the bundle contents with the control hardware already in the PC, especially when buying a single replacement.
Pick blade direction for the case layout
The Lian Li UNI FAN SL-INF 120 Reverse Blade Black Single Pack suits layouts where fan presentation and airflow direction both matter. Check frame arrows and plan intake and exhaust positions before installation.
Compare useful specifications, not just lighting
Lian Li UNI FAN SL-INF listings show details such as maximum speed, airflow and noise. Treat those figures as manufacturer specifications, then consider case fit, fan count, desired lighting and control connections together.
FAQ
What is the best Noctua NT-H2 size for one CPU upgrade?
The Noctua NT-H2 3.5g Thermal Compound is the practical size for a single processor cooler refresh and occasional maintenance. The 10g syringe suits multiple systems or repeated builds. Both options are thermal compound, not standalone CPU coolers.
Is Noctua NT-H2 the same as a Lian Li UNI FAN SL-INF fan?
No. Noctua NT-H2 is thermal paste for the contact between a processor and cooler. A Lian Li UNI FAN SL-INF fan circulates air through a compatible PC case or cooling layout. A complete PC can use both for their separate roles.
Does the Lian Li UNI FAN SL-INF 120 Black Triple Pack come with a controller?
The standard Lian Li UNI FAN SL-INF 120 Black Triple Pack includes 3 fans and a controller. Check the exact listing contents before ordering, and confirm that the controller connections suit the motherboard and fan setup.
Should I buy a Lian Li UNI FAN SL-INF 120 or 140?
Choose the Lian Li UNI FAN SL-INF 120 for a compatible 120mm mount and the 140 version for a compatible 140mm mount. Measure available space and check radiator, panel and cooler clearance before selecting a fan size.
What is the advantage of the Lian Li UNI FAN SL-INF reverse-blade model?
The Lian Li UNI FAN SL-INF 120 Reverse Blade Black Single Pack supports a showcase layout that needs reverse-blade airflow with the preferred fan face visible. Check the airflow direction arrows and plan the intended intake or exhaust position.
Which product is best for a one-fan replacement?
The Lian Li UNI FAN SL-INF 120 Black Single Pack is the direct choice for one compatible 120mm mount. For a 140mm mount, choose the Lian Li UNI FAN SL-INF 140 Black Single Pack instead, and check controller compatibility.