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- Best overall: Noctua NF-A12x25 PWM 120mm Fan
- Best budget: Noctua NT-H1 3.5g Thermal Compound
- Best premium: Noctua NF-A12x25 PWM chromax.black.swap 120mm Fan
- Best for quiet builds: Noctua NF-A12x25 ULN 120mm Fan
- Noctua NT-H2 is thermal compound for transferring heat between a processor and cooler; Noctua NF-A12x25 is a 120mm case or radiator fan.
- Choose Noctua NT-H2 when refreshing a CPU cooler installation, and choose Noctua NF-A12x25 when adding or replacing a fan.
- Noctua NF-A12x25 PWM reaches 2,000 rpm, while Noctua NF-A12x25 ULN prioritizes quieter operation at 1,200 rpm.
- Noctua NT-H2 3.5g suits occasional maintenance, while the 10g tube is a better fit for repeated builds.
Noctua NT-H2 and Noctua NF-A12x25 are not competing versions of the same product: Noctua NT-H2 is thermal paste, while Noctua NF-A12x25 is a 120mm fan. For Black Friday 2026, the right choice depends on whether a PC needs a fresh thermal interface or more airflow. I researched and compared specs, reviews and owner feedback to make the difference clear and identify the right version for common builds.
Noctua NT-H2 is the direct choice for applying thermal compound between a processor and its cooler. Noctua NF-A12x25 PWM is the versatile fan pick, with a 2,000 rpm maximum speed; quieter and lower-cost fan variants serve different priorities. The guide also compares Noctua NT-H1 and multiple NT-H2 sizes, so shoppers can match the purchase to a single repair or several builds.
How We Picked
- We researched and compared specs, reviews and owner feedback, focusing on the products’ intended roles rather than treating thermal paste and fans as substitutes.
- We checked key fit and performance details, including fan size, maximum rotation speed, noise ratings and thermal compound package size.
- We considered everyday needs such as one-time CPU maintenance, repeat PC builds, high airflow and quieter operation.
- We prioritized clear product distinctions and usable buying advice over promotional claims or temporary offer details.
Comparison Table
| Product | Best for | Product type | Package or frame size | Key speed or temperature |
|---|---|---|---|---|
| Noctua NT-H2 3.5g Thermal Compound | One-time maintenance | Thermal compound | 3.5g | -50°C to 200°C |
| Noctua NT-H2 10g Thermal Compound | Repeat builds | Thermal compound | 10g | -50°C to 200°C |
| Noctua NT-H1 3.5g Thermal Compound | Routine maintenance | Thermal compound | 3.5g | -50°C to 110°C |
| Noctua NF-A12x25 PWM 120mm Fan | PWM airflow control | 120mm fan | 120mm | 2,000 rpm |
| Noctua NF-A12x25 PWM chromax.black.swap 120mm Fan | Black-themed high-airflow build | 120mm fan | 120mm | 2,000 rpm |
| Noctua NF-A12x25 FLX 120mm Fan | 3-pin fan connection | 120mm fan | 120mm | 2,000 rpm |
| Noctua NF-A12x25 ULN 120mm Fan | Quiet operation | 120mm fan | 120mm | 1,200 rpm |
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 PC refresh, with a 3.5g tube and an operating range from -50°C to 200°C. The compact size keeps the purchase focused on maintenance rather than stocking up.
Best for: One CPU cooler removal or installation
- Product type
- Thermal compound
- Package weight
- 3.5g
- Operating range
- -50°C to 200°C
- Electrical conductivity
- Non-electrically conductive
- Straightforward size for occasional maintenance
- Suitable for CPU and GPU cooling applications
- Wide stated operating temperature range
- Smaller supply than the 10g tube
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 practical choice for a single cooler installation or occasional PC maintenance. The Noctua NT-H2 3.5g Thermal Compound's 3.5g package and -50°C to 200°C operating range make the product easy to identify and use for its intended thermal-interface role.
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#2
Noctua NT-H2 10g Thermal Compound
The Noctua NT-H2 10g Thermal Compound is the best bulk thermal paste option for repeat builds, with 10g of compound and a -50°C to 200°C operating range. The larger tube favors PC builders who handle multiple cooler installations.
Best for: Multiple builds and frequent maintenance
- Product type
- Thermal compound
- Package weight
- 10g
- Operating range
- -50°C to 200°C
- Electrical conductivity
- Non-electrically conductive
- More compound for repeated applications
- Same NT-H2 formulation as the smaller tube
- Useful for builders maintaining several systems
- More compound than a one-time repair needs
Is the Noctua NT-H2 10g Thermal Compound a good choice for repeated PC builds?
Yes. The Noctua NT-H2 10g Thermal Compound suits builders who regularly install or remove coolers across multiple systems. The Noctua NT-H2 10g Thermal Compound's 10g package provides more compound than the 3.5g version, while retaining the NT-H2 operating range of -50°C to 200°C.
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#3
Noctua NT-H1 3.5g Thermal Compound
The Noctua NT-H1 3.5g Thermal Compound is the best alternative for shoppers who want a compact Noctua paste tube, with a 3.5g fill and a stated operating range of -50°C to 110°C. The product covers routine CPU cooler maintenance.
Best for: Routine maintenance on a smaller compound budget
- Product type
- Thermal compound
- Package weight
- 3.5g
- Operating range
- -50°C to 110°C
- Electrical conductivity
- Non-electrically conductive
- Compact tube for occasional repairs
- Useful for standard cooler installation tasks
- Non-electrically conductive compound
- Lower maximum operating temperature than NT-H2
Should I choose Noctua NT-H1 3.5g Thermal Compound or NT-H2?
Choose the Noctua NT-H1 3.5g Thermal Compound for routine maintenance when a compact tube is the priority. Choose Noctua NT-H2 when its higher stated maximum operating temperature is more important. Both products are thermal compounds, not replacements for a case or radiator fan.
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#4 · Top pick
Noctua NF-A12x25 PWM 120mm Fan
The Noctua NF-A12x25 PWM 120mm Fan is the best all-purpose fan for a compatible case or radiator, with a 120mm frame and a maximum speed of 2,000 rpm. PWM control lets a compatible motherboard adjust fan speed to system demands.
Best for: Balanced airflow with PWM control
- Frame size
- 120mm
- Maximum speed
- 2,000 rpm
- Maximum noise rating
- 22.6 dB(A)
- Maximum airflow
- 60.1 CFM
- PWM speed control
- Suitable for case and radiator use
- High maximum airflow for a 120mm fan
- Top speed is not the quietest option in this group
Is the Noctua NF-A12x25 PWM 120mm Fan worth buying on Black Friday 2026?
Yes. The Noctua NF-A12x25 PWM 120mm Fan is a versatile option for a compatible case or radiator when adjustable speed and strong airflow matter. The Noctua NF-A12x25 PWM 120mm Fan's 2,000 rpm maximum speed and PWM control make it a good match for varied cooling needs.
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#5
Noctua NF-A12x25 PWM chromax.black.swap 120mm Fan
The Noctua NF-A12x25 PWM chromax.black.swap 120mm Fan is the best black-finish pick for a high-performance 120mm build, with a 2,000 rpm maximum speed and PWM control. The Noctua NF-A12x25 PWM chromax.black.swap 120mm Fan's dark styling suits systems where the classic fan color is not wanted.
Best for: Black-themed builds needing a premium 120mm fan
- Frame size
- 120mm
- Maximum speed
- 2,000 rpm
- Maximum noise rating
- 22.6 dB(A)
- Maximum airflow
- 60.1 CFM
- Black finish for coordinated builds
- PWM speed control
- Strong airflow and radiator suitability
- Costs more than a basic fan in its category
Does the Noctua NF-A12x25 PWM chromax.black.swap 120mm Fan have the same performance as the standard version?
Yes. The Noctua NF-A12x25 PWM chromax.black.swap 120mm Fan shares the standard version’s key rated figures, including a 2,000 rpm maximum speed and 60.1 CFM maximum airflow. The Noctua NF-A12x25 PWM chromax.black.swap 120mm Fan's key distinction is the black finish and included styling accessories.
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#6
Noctua NF-A12x25 FLX 120mm Fan
The Noctua NF-A12x25 FLX 120mm Fan is the best fixed-control pick for a 3-pin fan connection, with a maximum speed of 2,000 rpm and 60.1 CFM maximum airflow. The FLX model offers manual speed adjustment through the included low-noise adapters.
Best for: Builds using a 3-pin fan connection
- Frame size
- 120mm
- Maximum speed
- 2,000 rpm
- Maximum noise rating
- 22.6 dB(A)
- Maximum airflow
- 60.1 CFM
- 3-pin connection for compatible fan headers
- Low-noise adapters support lower-speed operation
- Full-speed airflow rating of 60.1 CFM
- Lacks PWM speed control
What is the difference between the Noctua NF-A12x25 FLX 120mm Fan and PWM?
The Noctua NF-A12x25 FLX 120mm Fan uses a 3-pin connection and included low-noise adapters for speed adjustment. The Noctua NF-A12x25 PWM 120mm Fan uses a 4-pin PWM connection for compatible motherboard speed control.
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#7
Noctua NF-A12x25 ULN 120mm Fan
The Noctua NF-A12x25 ULN 120mm Fan is the best quiet-operation pick for a compatible 120mm mount, with a 1,200 rpm maximum speed and a 12.1 dB(A) noise rating. The lower speed prioritizes restrained noise over the airflow of faster versions.
Best for: Quiet-focused PC builds
- Frame size
- 120mm
- Maximum speed
- 1,200 rpm
- Maximum noise rating
- 12.1 dB(A)
- Maximum airflow
- 32.7 CFM
- Lower maximum noise rating than faster variants
- 120mm fit for compatible mounts
- Useful where moderate airflow is sufficient
- Lower maximum airflow than the 2,000 rpm versions
Is the Noctua NF-A12x25 ULN 120mm Fan good for a quiet PC?
Yes. The Noctua NF-A12x25 ULN 120mm Fan is designed for quieter operation, with a 1,200 rpm maximum speed and a 12.1 dB(A) rating. Choose a faster NF-A12x25 variant when maximum airflow takes priority over low noise.
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Are Noctua NT-H2 and Noctua NF-A12x25 alternatives?
Noctua NT-H2 is thermal compound, while Noctua NF-A12x25 is a 120mm cooling fan, so the products solve different PC cooling problems. Noctua NT-H2 fills microscopic gaps between a processor and cooler; Noctua NF-A12x25 moves air through a case or radiator. The name comparison is useful for shoppers searching Noctua cooling products, but the products are not interchangeable.
For a cooler removal or CPU maintenance job, choose a suitable thermal compound such as Noctua NT-H2 3.5g Thermal Compound. For a damaged fan, a case airflow upgrade or radiator cooling, check whether a 120mm mount and the fan’s connector match the system. My pick for most people needing a fan is Noctua NF-A12x25 PWM 120mm Fan, while paste shoppers should start with the smaller NT-H2 tube.
What is Noctua NT-H2 used for?
Noctua NT-H2 is a thermal compound applied between a processor and a cooler to improve heat transfer across their contact surfaces. Noctua NT-H2 3.5g Thermal Compound suits occasional maintenance, while Noctua NT-H2 10g Thermal Compound gives repeat builders a larger supply. Neither product adds airflow or replaces a cooling fan.
Apply thermal paste according to the cooler and processor instructions, and clean away old compound before installing a fresh layer. Noctua NT-H2 has a stated operating range of -50°C to 200°C and is non-electrically conductive. Noctua NT-H1 3.5g Thermal Compound is another compact option, with a stated operating range of -50°C to 110°C. Select based on the system task and the amount of compound needed.
What is Noctua NF-A12x25 used for?
Noctua NF-A12x25 is a 120mm fan family for compatible case and radiator mounts, with variants built around different speed-control and noise priorities. Noctua NF-A12x25 PWM 120mm Fan reaches 2,000 rpm and offers PWM control, making it a flexible choice for systems with a compatible 4-pin fan header.
Check case clearance, radiator fit and motherboard or controller connections before choosing a model. Noctua NF-A12x25 FLX 120mm Fan uses a 3-pin connection, while Noctua NF-A12x25 ULN 120mm Fan caps speed at 1,200 rpm for quieter operation. Noctua NF-A12x25 PWM chromax.black.swap 120mm Fan is the black-finish alternative for shoppers who want similar key airflow ratings in a coordinated build.
Which Noctua NF-A12x25 version is quietest?
Noctua NF-A12x25 ULN 120mm Fan is the quietest listed version, with a maximum speed of 1,200 rpm and a 12.1 dB(A) noise rating. The lower ceiling favors quiet-focused systems where maximum airflow is not the main goal. Compare the fan’s airflow needs with the system’s cooling demands before choosing the lower-speed option.
Noctua NF-A12x25 PWM 120mm Fan and Noctua NF-A12x25 PWM chromax.black.swap 120mm Fan both reach 2,000 rpm and have a 22.6 dB(A) maximum noise rating. PWM speed control lets a compatible system run fans below maximum speed when cooling demand is lower. Skip it if a low-speed fan does not provide the airflow your case or radiator requires.
Which Noctua cooling product should I buy for Black Friday 2026?
Buy Noctua NT-H2 for a thermal-paste replacement and Noctua NF-A12x25 for a fan replacement or airflow upgrade. The decision starts with the hardware task, not a direct performance comparison: paste transfers heat at the cooler interface, while a fan moves air through a system. Black Friday 2026 is a good time to compare the exact size and variant against the PC’s needs.
For a single cooler service, Noctua NT-H2 3.5g Thermal Compound is the practical size; for several builds, consider Noctua NT-H2 10g Thermal Compound. For a versatile fan, choose Noctua NF-A12x25 PWM 120mm Fan. Buyers should check connector type, mounting clearance and noise goals before selecting among fan versions.
Buying Guide
Start with the cooling job
Thermal paste and fans are different product categories. Choose Noctua NT-H2 or Noctua NT-H1 for the interface between a processor and cooler. Choose a Noctua NF-A12x25 fan to replace a fan or move air through a compatible 120mm mount.
Pick the right compound quantity
Noctua NT-H2 3.5g Thermal Compound is a compact option for occasional maintenance. Noctua NT-H2 10g Thermal Compound is a better fit for repeat builds or several systems. Avoid buying a larger tube unless the extra supply suits your use.
Match the fan connector
Check the PC’s fan header or controller before ordering. Noctua NF-A12x25 PWM models use PWM control, while Noctua NF-A12x25 FLX 120mm Fan has a 3-pin connection. Confirm the case or radiator supports a 120mm fan.
Balance noise and airflow
Noctua NF-A12x25 ULN 120mm Fan prioritizes lower noise at 1,200 rpm. The 2,000 rpm versions offer higher maximum airflow. Choose according to the case, radiator and cooling workload instead of treating maximum speed as the only measure.
FAQ
Is Noctua NT-H2 better than Noctua NF-A12x25?
Noctua NT-H2 and Noctua NF-A12x25 are not direct rivals. Noctua NT-H2 is thermal compound for the contact between a processor and cooler. Noctua NF-A12x25 is a 120mm fan for compatible case or radiator mounts. Choose the product that matches the cooling task.
Can Noctua NT-H2 replace a Noctua NF-A12x25 fan?
No. Noctua NT-H2 is thermal paste and does not move air. Noctua NF-A12x25 is a 120mm fan and does not replace thermal compound between a processor and cooler. A PC requiring both maintenance steps needs the appropriate product for each task.
Is Noctua NT-H2 3.5g enough for one CPU cooler installation?
Noctua NT-H2 3.5g Thermal Compound is a sensible package size for occasional maintenance or a single cooler job. Follow the processor and cooler instructions for application. Builders who service several PCs should compare it with Noctua NT-H2 10g Thermal Compound.
Does Noctua NF-A12x25 PWM fit every PC case?
No. Noctua NF-A12x25 PWM 120mm Fan requires a compatible 120mm mounting position and enough clearance. Check the case or radiator specifications, fan-header type and surrounding components before ordering. A 120mm frame does not guarantee compatibility with every system.
Which Noctua NF-A12x25 is best for quiet builds?
Noctua NF-A12x25 ULN 120mm Fan is the quiet-focused choice among the listed options, with a 1,200 rpm maximum speed and a 12.1 dB(A) rating. Choose a faster model when the PC needs more airflow from its 120mm fan.