Thermal Paste CPU 1.8g
4.7Editor score
Affordable price point
Includes application toolkit
Five year stability
In this guide
Thermal paste ensures efficient heat transfer between processors and heatsinks. Choosing the right compound prevents overheating and extends hardware lifespan significantly for any computer system.
We compared ten leading heatsink compounds based on thermal conductivity, ease of application, and long-term stability. Our analysis covers various formulations including silicone and ceramic options.
Each pick highlights specific strengths like voltage insulation or high conductivity. Note that prices and availability may change over time as suppliers update their stock levels regularly.
Top 3 Picks for Best Heatsink Compound
ARCTIC MX-4
4.8Editor score
High thermal conductivity
Non-conductive safety
Eight year durability
Dow Corning 340
4.9Editor score
Industrial grade quality
Non-flowing formula
High dielectric strength
Top 10 Best Heatsink Compound in 2026 Compared
This side-by-side comparison evaluates all ten products based on key specifications like thermal conductivity and weight to help you find the ideal match for your needs.
ProductsSpecificationsEditor scorePrice
Editor's Choice
ARCTIC MX-4
4g tube included
Carbon microparticles
Metal-free formula
8 year lifespan
4.8Editor score
Editor's Choice
Super Lube Silicone
3 oz tube
Non-curing silicone
High dielectric
Easy removal
4.8Editor score
Best Premium
Easycargo 200gr
200g bulk
White silicone
1.42 W/m-k
Wide temp range
4.8Editor score
Arctic Silver 5
3.5g tube
Ceramic particles
Pure silver mix
No migration
4.8Editor score
G107 20g
20g silver
Non-conductive
3.17 W/m-k
Spatula included
4.7Editor score
MYQ058-100g
100g bulk
Carbon graphite
5.8 W/m-k
RoHS compliant
4.6Editor score
HY-510-100g
4x25g packs
Silicone grease
1.93 W/m-k
Metal-free
4.6Editor score
G104 100g
100g white
Silicone base
1.63 W/m-k
Spatula included
4.8Editor score
Dow Corning 340
142g 5oz
Non-flowing
0.67 W/m-k
Industrial use
4.9Editor score
Thermal Paste CPU
1.8g pack
Carbon microparticles
Toolkit included
5 year lifespan
4.7Editor score
1. ARCTIC MX-4 – Best Overall Heatsink Compound
ARCTIC MX-4
Carbon microparticles
Non-electrical conductive
Eight year life
Easy application
This thermal paste is a top rated option with a 4.8 star rating known for high thermal conductivity and reliability across many processor types.
Pros
- High thermal performance
- Safe metal-free formula
- Consistent quality
- Easy to apply
- Excellent durability
Cons
- Small 4g tube
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Its carbon microparticle formula ensures heat dissipates quickly from CPUs and GPUs while remaining safe with a non-electrical conductive and metal-free design.
Although it comes in a small 4g tube which might limit large batch usage the consistency makes it easy for beginners and experienced users alike.
Anyone seeking a dependable paste that lasts eight years without reapplication should consider this product for standard cooling tasks and stability.
Superior Thermal Conductivity
The carbon microparticle composition guarantees extremely high thermal conductivity ensuring heat from the CPU and GPU is dissipated quickly and efficiently without hotspots.
Long Term Reliability
Once applied the paste will last at least for eight years without compromising over time so you do not need to apply it again.
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2. Thermal Paste CPU – Best Budget Heatsink Compound
Thermal Paste CPU
1.8g kit
Carbon microparticles
Non-conductive
Five year life
This compact thermal paste kit offers excellent value with a 4.7 star rating providing carbon microparticles for efficient heat dissipation in budget builds.
Pros
- Very affordable price
- Includes application kit
- Safe to use
- High thermal conductivity
- Durable formula
Cons
- Very small size
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It features a safe non-conductive formula that eliminates short circuit risks while promising to last at least five years without compromising performance over time.
The small 1.8g size is ideal for single CPU upgrades but might be insufficient for multiple systems and the toolkit is basic but functional.
Users looking for an inexpensive and reliable solution for occasional maintenance or single component cooling will find this product very attractive and effective.
High Thermal Conductivity
Made of carbon microparticles this paste guarantees extremely high thermal conductivity ensuring heat from the CPU and GPU is dissipated quickly and efficiently.
Easy To Apply
With ideal consistency the paste is very easy to use even for beginners and includes a toolkit to assist with application tasks.
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3. Dow Corning 340 – Best Premium Heatsink Compound
Dow Corning 340
142g bulk
Non-flowing silicone
High dielectric
Industrial grade
This industrial grade silicone thermal compound holds the highest 4.9 star rating and is designed for reliable heat transfer between electrical devices and heat sinks.
Pros
- Highest rated option
- Professional grade quality
- Non-flowing formula
- High dielectric strength
- Large 142g tube
Cons
- Higher price point
- Lower conductivity
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It offers a non-flowing and non-curing formula with high dielectric strength that provides excellent electrical insulation and safety for sensitive electronic components.
While its thermal conductivity is lower than high performance CPU pastes its stability and large 142g size make it ideal for industrial and automotive applications.
Professionals needing a durable and safe solution for high voltage or compact electronics should choose this premium compound for long term reliability.
Excellent Electrical Insulation
High dielectric strength and insulation performance eliminate risks of short circuits ensuring reliable protection for sensitive electronic components during use.
Non-Flowing Design
The non-flowing and non-curing properties ensure the compound remains stable without needing ovens or curing while transferring heat for reliable cooling.
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4. Super Lube Silicone – Best Electrical Insulation Heatsink Compound
Super Lube Silicone
3 oz tube
Non-curing silicone
Low bleed paste
High dielectric
This silicone heat sink compound delivers superior high heat dissipation for CPUs and LEDs with a 4.8 star rating and high dielectric strength for electrical safety.
Pros
- Non-curing silicone base
- Resists hardening
- High dielectric strength
- Easy mess-free application
- Easy removal
Cons
- Silicone formula limits conductivity
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Its non-curing silicone base stays flexible and resists hardening drying or melting over time while the low bleed paste formula protects sensitive electronic components well.
The high dielectric strength makes it ideal for electrical devices though silicone bases typically offer lower thermal conductivity than ceramic options for CPU cooling.
Anyone needing a reliable insulating thermal paste for electronics maintenance or industrial settings will appreciate the flexibility and ease of use here.
Reliable Electrical Insulation
High dielectric strength and low bleed paste formula protect sensitive electronic components from electrical risks during thermal coupling tasks.
Stable and Long Lasting
This non-curing silicone thermal compound stays flexible and resists hardening drying or melting over time for consistent long term performance.
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5. Easycargo 200gr – Best Bulk Heatsink Compound
Easycargo 200gr
200g bulk
White silicone carbon
1.42 W/m-k
-30 to 280 C
This thermal paste kit offers a large 200g bulk quantity with a 4.8 star rating for cooling heat sink interfaces on GPUs LEDs and other transistors.
Pros
- Large 200g quantity
- Wide temperature range
- Suitable for many components
- Silicone carbon compound
- High durability
Cons
- Lower conductivity than metal
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It works reliably from minus 30 to 280 degrees Celsius and provides consistent performance over time without compromising on stability for various industrial uses.
While the thermal conductivity is moderate at 1.42 W/m-k the wide temperature range and bulk packaging make it excellent for bulk applications.
Users who need a cost-effective large volume solution for multiple projects or varied electronic cooling tasks will find this kit very versatile.
Wide Temperature Range
The compound works reliably from minus 30 to 280 degrees Celsius ensuring stable performance under extreme environmental conditions effectively.
Large Bulk Quantity
With 200 grams of paste available this kit allows for multiple applications without needing to reorder frequently for projects.
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6. Arctic Silver 5 – Best Ceramic Silver Heatsink Compound
Arctic Silver 5
3.5g tube
Ceramic particles
Pure silver mix
No migration
This thermal paste features 99.9% pure micronized silver with ceramic particles and a 4.8 star rating ensuring the best physical contact between heatsink and CPU core.
Pros
- 99.9% pure silver
- Thermally enhanced ceramic
- No separation or migration
- Easy to remove
- Best physical contact
Cons
- Small 3.5g size
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The paste will not separate run migrate or bleed over time which keeps the interface stable and provides a thermal conductance of over 350000 W/m2 degrees C.
Although the 3.5g tube is relatively small for the price the unique blend of silver and ceramic particles guarantees high performance for standard CPUs.
Enthusiasts and builders looking for a trusted brand with proven stability will appreciate the lack of migration issues in this high quality formula.
Ensures Best Physical Contact
Thermally enhanced ceramic particles and unique shapes of pure silver particles ensure best physical contact between the heatsink and CPU core.
No Migration or Bleed
The paste will not separate run migrate or bleed over time maintaining stable performance and easy removal during maintenance tasks.
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7. G107 20g – Best Value Silver Heatsink Compound
G107 20g
20g silver
3.17 W/m-k
Non-electrical conductive
Spatula included
This silver thermal paste delivers a high thermal conductivity of over 3.17 W/m-k with a 4.7 star rating for effective heat dispersion from CPU to heatsink.
Pros
- High thermal conductivity
- Non-electrical conductive
- Non-toxic and tasteless
- Good weight per price
- Spatula included
Cons
- Brand recognition varies
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It is non-electrical conductive non-toxic and non-corrosive making it safe for CPUs GPUs LEDs and other components without risking short circuits or damage.
The 20g package includes a thermal paste spatula for easier application which is a nice touch for users wanting to avoid messy fingers.
People seeking an effective balance of high thermal performance and a manageable quantity at a reasonable price will find this paste very practical.
High Thermal Conductivity
Thermal conductivity greater than 3.17 W/m-k ensures heat is dispersed effectively from the CPU to the heatsink for better cooling.
Safe and Non Conductive
This paste is non-electrical conductive non-toxic and non-corrosive providing safe heat dispersion without risks to sensitive components.
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8. MYQ058-100g – Best High Performance Heatsink Compound
MYQ058-100g
100g bulk
5.8 W/m-k
Graphite and metal
RoHS compliant
This carbon based high performance thermal paste offers superior conductivity of 5.8 W/m-k with a 4.6 star rating for efficient heat transfer from CPUs and GPUs.
Pros
- High 5.8 W/m-k
- Large 100g volume
- Eco-friendly RoHS
- Stable performance
- Wide temp range
Cons
- Lower rating than others
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Formulated with high-performance graphite and metal powders it features low thermal resistance and SGS certification ensuring stable cooling performance over time.
The wide temperature range from minus 20C to 230C continuously makes it suitable for demanding industrial environments and everyday use with safety.
Users seeking high thermal conductivity at an affordable price for large volumes will find this eco-friendly and cost-effective paste very appealing.
Superior Thermal Conductivity
Formulated with high-performance graphite and metal powders delivering thermal conductivity of 5.8 W/mK to efficiently transfer heat away from CPU GPU PCB and IC.
Eco Friendly and Safe
SGS certified and RoHS compliant this grease offers high heat dissipation efficiency with low bleed and high voltage insulation protection.
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9. HY-510-100g – Best Multi-Pack Heatsink Compound
HY-510-100g
4x25g packs
1.93 W/m-k
Non-conductive
-30 to 280 C
This thermal paste comes in four separate 25g packs totaling 100g with a 4.6 star rating ensuring heat is effectively dissipated from CPUs and GPUs.
Pros
- Four separate 25g packs
- Metal-free and safe
- Wide temp range
- Easy to apply
- High durability
Cons
- Moderate conductivity
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It features a metal-free non-electrical conductive formula that eliminates risks of causing short circuits while remaining non-toxic and non-corrosive for safe application.
The paste has an ideal consistency that makes it very easy to use even for beginners and offers stable performance under extreme temperature conditions.
Buyers who prefer smaller controlled packs to reduce waste while needing enough supply for multiple repairs or projects will appreciate this packaging.
Excellent Thermal Conductivity
Thermal conductivity 1.93 W/m-k ensures that the heat generated by the CPU or GPU is effectively dissipated for excellent temperature reduction.
High Durability
Low thermal resistance keeps the paste mushy for a long time with stable performance under extreme temperature conditions and minimal compromise.
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10. G104 100g – Best Large Silicone Heatsink Compound
G104 100g
100g white
Silicone grease
1.63 W/m-k
Spatula included
This heat sink compound is a large 100g thermal paste with a 4.8 star rating designed to disperse heat from CPU to heatsink effectively for cooling.
Pros
- Large 100g bulk
- Non-electrical conductive
- Non-toxic and tasteless
- Includes application tool
- Easy heat dispersion
Cons
- Lower thermal conductivity
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It is non-electrical conductive non-toxic and tasteless suitable for CPUs GPUs ovens and high power LEDs without risking damage to sensitive components.
The thermal resistance is low and thermal conductivity is moderate but the large quantity and included spatula make it practical for general use.
Users who need a reliable silicone based paste for various electronics maintenance tasks and value quantity will find this option well suited.
Helps Disperse Heat
This paste helps disperse the heat from CPU to heatsink effectively and is suitable for a wide range of electronic components.
Safe and Easy to Use
Non-electrical conductive non-toxic and tasteless this thermal grease ensures safety and is easy to apply with the included spatula.
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Buying Guide – How to Choose the Best Heatsink Compound
Selecting the right compound involves considering material type conductivity and application needs to ensure your hardware stays cool efficiently.
Thermal Conductivity
Thermal conductivity measures how well a paste transfers heat from a component to the heatsink and is measured in W/mK. Higher values generally mean better cooling performance which is crucial for high heat CPUs and GPUs.
Look for pastes with high conductivity numbers if you want to maximize cooling efficiency for your system.
Electrical Safety
For standard consumer electronics it is vital to use a paste that is non-electrical conductive to prevent short circuits. This feature protects your motherboard and GPU when applied around sensitive contacts and pins.
Ensure the product is explicitly labeled as non-conductive or metal-free for general computing tasks to stay safe.
Longevity and Stability
High quality compounds are designed to remain stable for years without drying out or bleeding. A paste that dries quickly will lose effectiveness and require re application which can be difficult on certain mounting systems.
Choose products known for lasting many years like those claiming five to eight years of stability for long term reliability.
Material Composition
Thermal pastes come in silicone ceramic silver or carbon formulations. Silicone is safe and stable while metal options offer higher conductivity. Selecting the right material depends on whether you prioritize safety or maximum performance.
Match the material to your specific needs such as industrial insulation versus consumer cooling performance.
Application Ease
The consistency of the paste affects how easy it is to spread evenly across the processor surface. A paste that is too thick can be hard to spread and too thin may not fill gaps well.
Look for products described as having ideal consistency or those that include application tools to simplify the process.
Package Size
Tube sizes range from small single use 1g to 50g and larger industrial bulk sizes. If you are upgrading multiple systems consider buying in bulk to save on cost per gram.
Choose a size that matches your expected usage frequency to avoid waste or shortage when needed.
Temperature Range
Extreme environments may require pastes that can withstand very high or low temperatures without melting or freezing. Standard pastes handle typical PC temperatures but industrial components might need wider tolerance.
Check the working temperature range to ensure it covers your specific operating conditions for optimal heat transfer.
Brand Reputation
Established brands often have proven formulas and reliable quality control which reduces the risk of poor performance. Trusted manufacturers frequently update their products based on user feedback and testing.
Consider the reputation of the manufacturer when comparing options to ensure consistent quality and support if needed.
How to Use and Care for Your Heatsink Compound
Start by cleaning both the processor surface and the heatsink base thoroughly with isopropyl alcohol to remove any old paste residue and oils that could prevent proper contact.
Apply a small pea sized amount of paste in the center of the processor and allow the pressure of the heatsink to spread it evenly across the surface without excessive manual spreading.
After installation monitor your system temperatures to ensure the paste is performing as expected and clean the surfaces before any future reapplication for maintenance.
Frequently Asked Questions
Is thermal paste necessary for all CPUs?
Yes thermal paste is essential for nearly all CPUs to bridge the microscopic gaps between the processor and the heatsink. Without it air acts as an insulator causing the CPU to overheat quickly.
How often should you reapply thermal paste?
High quality pastes can last several years without needing reapplication but it is good practice to check temperatures if you notice overheating. Most pastes remain effective for five to eight years under normal use.
Can I use regular grease instead of thermal paste?
No regular grease is not designed for heat transfer and may insulate heat or become liquid under heat. Always use a dedicated thermal compound that is engineered for thermal conductivity.
Does more paste mean better cooling?
No too much paste can act as an insulator or squeeze out to create mess. A small pea sized amount is usually sufficient to create a thin effective layer for cooling.
What is the difference between silicone and silver paste?
Silicone pastes are safer and non-conductive while silver pastes offer higher thermal conductivity but carry higher risk of electrical issues if spilled. Choose based on your comfort with electrical safety.
How do I store unused thermal paste?
Store unused paste in a cool dry place with the cap tightly sealed to prevent drying out. Avoid exposing the tube to direct sunlight or extreme heat which can degrade the formula.
Final Thoughts on Choosing the Best Heatsink Compound
The top picks offer excellent solutions ranging from the affordable and reliable ARCTIC MX-4 to the premium industrial grade Dow Corning 340 for varied needs.
Prioritize non-conductive formulas for consumer electronics and look for high thermal conductivity values if you need to manage high heat loads effectively.
Remember to check current availability and specific product details before purchasing as formulations and packaging may change over time in the market.