Arctic Silver 5 AS5-3.5G Thermal Paste
4.8Editor score
Thermally enhanced ceramic and silver particles
Will not separate run migrate or bleed
Easy to apply and remove
In this guide
Finding the right heatsink compound is essential for maintaining optimal operating temperatures in your computer hardware. A high-quality thermal paste ensures efficient heat transfer between the processor and the cooling solution, preventing thermal throttling and extending component lifespan. With so many options on the market, choosing the best product can be challenging without proper guidance.
We have evaluated ten leading heatsink compounds based on thermal conductivity, ease of application, durability, and safety features. Our analysis focuses on real-world performance metrics and user feedback to provide an accurate assessment of each product. This list covers a range of formulations including silicone-based, carbon-based, and metal-enhanced pastes for diverse cooling requirements.
Each product in this roundup includes detailed specifications, pros and cons, and specific use cases to help you make an informed decision. Please note that pricing and availability may fluctuate over time so check current listings before purchasing. Our goal is to simplify your search for the most effective thermal interface material for your specific build.
Top 3 Picks for Best Heatsink Compound
ARCTIC MX-4 (4 g) – Premium Performance Thermal Paste for All Processors
4.8Editor score
High thermal conductivity carbon microparticles
Metal-free non-electrical conductive formula
Lasts at least eight years without reapplication
Dow Corning 340 Silicone Heat Sink Compound
4.9Editor score
High dielectric strength for electrical insulation
Non-flowing and non-curing formula
Ideal for industrial and automotive applications
Top 10 Best Heatsink Compound in 2026 Compared
The following table provides a side-by-side comparison of the top ten heatsink compounds to help you quickly identify key specifications and features for each option.
ProductsSpecificationsEditor scorePrice
Editor's Choice
ARCTIC MX-4
Carbon microparticles
Non-electrical conductive
8 year durability
Ideal consistency
4.8Editor score
Editor's Choice
Super Lube Silicone
Superior high heat dissipation
Non-curing silicone
High dielectric strength
Easy removal
4.8Editor score
Best Premium
Easycargo 200gr
1.42 W/m-k conductivity
0.252 k-in/W resistance
-30 to 280C range
White silicone carbon
4.8Editor score
Arctic Silver 5
Ceramic particles
99.9% pure silver
No migration
3.5g size
4.8Editor score
G107 20g Silver
3.17W/m-k conductivity
Non-Electrical Conductive
High temp resistance
Includes spatula
4.7Editor score
MYQ058-100g
5.8W/m-k conductivity
10000V insulation
-20C to 230C range
SGS RoHS compliant
4.6Editor score
HY-510-100g
1.93W/m-k conductivity
Non-Conductive silicone
-30 to 280C range
Metal-free
4.6Editor score
G104 100g
1.63W/m-k conductivity
Non-Electrical Conductive
Low thermal resistance
Includes spatula
4.8Editor score
Dow Corning 340
0.67 W/m-K conductivity
210 V/mil dielectric
Non-flowing non-curing
142g size
4.9Editor score
Thermal Paste CPU 1.8g
Carbon microparticles
Metal-free non-conductive
Lasts 5 years
Includes toolkit
4.7Editor score
1. ARCTIC MX-4 – Best Overall Heatsink Compound
ARCTIC MX-4
Carbon microparticles
Non-electrical conductive
8 year durability
Ideal consistency
The ARCTIC MX-4 stands out as the top recommendation for most users seeking reliable thermal performance. With a high rating of 4.8 stars it delivers consistent quality through its carbon microparticle formula. This paste ensures high thermal conductivity without the risks associated with metal compounds.
Pros
- Exceptional thermal conductivity
- Safe non-conductive formula
- Long lifespan without reapplication
- Easy for beginners to apply
- Reliable consistent quality
Cons
- Small tube size
- May dry out if stored too long
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Its standout qualities include excellent performance in dissipating heat from CPUs and GPUs quickly and efficiently. The metal-free nature eliminates risks of short circuits adding protection to sensitive components. Additionally it maintains its consistency over time lasting at least eight years before needing replacement.
While the tube size is small it provides enough paste for multiple applications. Some users note that storage conditions can affect longevity but proper sealing mitigates this. These minor trade-offs are acceptable given the overall reliability and ease of use.
This product is ideal for both beginners and experienced builders looking for a balanced solution. Whether you are cooling a gaming PC or workstation the MX-4 offers dependable results. We highly recommend it for anyone prioritizing safety and long-term performance.
Superior Heat Dissipation
The carbon microparticles guarantee extremely high thermal conductivity ensuring rapid heat transfer from processor to heatsink.
Long-Term Reliability
Once applied the paste does not compromise over time eliminating the need for frequent reapplication cycles.
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2. Super Lube Silicone – Best Budget Heatsink Compound
Super Lube Silicone
Superior high heat dissipation
Non-curing silicone
High dielectric strength
Easy removal
Super Lube Silicone Heat Sink Compound offers superior heat dissipation for a wide range of applications. Rated at 4.8 stars it is known for its stable and long-lasting properties. The non-curing silicone formula remains flexible resisting hardening or drying over time.
Pros
- Stable and long-lasting
- High dielectric strength
- Mess-free application
- Ideal for electrical devices
- Regulatory compliant
Cons
- Slightly higher price point
- Not for high performance CPU cooling
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It features high dielectric strength making it reliable for insulating sensitive electronic components. The paste adheres smoothly to metal surfaces filling imperfections with ease. Its mess-free application and easy removal simplify disassembly for maintenance tasks.
The price is higher than basic pastes but justified by its durability and electrical safety. It is not designed for high-performance CPU cooling but excels in LED and power diode contexts. These limitations are acceptable for its intended industrial and mechanical uses.
Choose this compound for electrical devices requiring reliable insulation and thermal transfer. It is perfect for technicians and hobbyists working with various electronic components. We recommend it for scenarios where dielectric strength is a priority.
Stable Performance Over Time
The non-curing formula ensures the compound stays flexible and does not harden or melt during extended use.
Safe Electrical Insulation
High dielectric strength protects sensitive components from electrical shorts while maintaining efficient heat transfer.
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3. Easycargo 200gr – Best Premium Heatsink Compound
Easycargo 200gr
1.42 W/m-k conductivity
0.252 k-in/W resistance
-30 to 280C range
White silicone carbon
Easycargo 200gr provides a substantial amount of thermal paste for large-scale cooling projects. With a 4.8 rating it offers thermal conductivity of 1.42 W/m-k and resistance below 0.252 k-in/W. This makes it suitable for various heat sink interfaces including GPUs and transistors.
Pros
- Large 200g package
- Wide temperature range
- Low thermal resistance
- Versatile applications
- Silicone carbon compound
Cons
- Not top rated for extreme CPUs
- Lower conductivity than premium brands
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Its working temperature range spans from negative 30 to 280 degrees Celsius ensuring stability in diverse environments. The white silicone carbon compound is versatile for cooling CPUs LEDs and MOSFETs. This broad compatibility enhances its value for users needing multiple applications.
The lower conductivity compared to top-tier brands means it may not suit extreme overclocking. However for general use the large package size offers excellent value. These trade-offs are acceptable given the wide temperature tolerance and cost-effectiveness.
Ideal for workshops and enthusiasts managing multiple cooling tasks this kit provides reliable performance. We recommend it for those needing volume without compromising on thermal resistance. It is a solid choice for general-purpose thermal interface needs.
Versatile Cooling Interface
This compound effectively cools the interface between heatsinks and various components like LEDs and transistors.
Extreme Temperature Stability
Operates reliably across a wide range from -30C to 280C maintaining performance in extreme conditions.
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4. Arctic Silver 5 – Reliable Heatsink Compound
Arctic Silver 5
Ceramic particles
99.9% pure silver
No migration
3.5g size
Arctic Silver 5 is known for its thermally enhanced ceramic and silver particles. Rated 4.8 stars it ensures the best physical contact between heatsink and CPU core. This formula will not separate run migrate or bleed over time ensuring reliability.
Pros
- Enhanced ceramic particles
- Pure silver content
- Ensures physical contact
- Will not separate
- Easy to apply
Cons
- Small size limits applications
- Higher price per gram
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It contains 99.9% pure micronized silver contributing to its thermal conductance. The paste is easy to apply and remove simplifying installation and maintenance. Its stable nature means you won't see degradation during typical use cycles.
The small 3.5g size can be limiting for multiple builds and increases cost per gram. However the quality of materials justifies the expense for single systems. These limitations are minor given the proven track record of performance.
This product is perfect for enthusiasts seeking a trusted brand with proven reliability. It is suitable for standard CPUs and GPUs needing efficient heat dissipation. We recommend it for users valuing long-term stability over bulk volume.
Enhanced Thermal Contact
The combination of ceramic and pure silver particles ensures optimal physical contact for heat transfer.
Stable Non-Migrating Formula
Once applied the paste remains stable and will not separate run migrate or bleed.
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5. G107 20g Silver – Value Heatsink Compound
G107 20g Silver
3.17W/m-k conductivity
Non-Electrical Conductive
High temp resistance
Includes spatula
G107 20g Silver helps disperse heat from CPU to heatsink effectively. Rated at 4.7 stars it features high thermal conductivity above 3.17 W/m-k. It is suitable for CPUs GPUs LED and other components like chipsets and ovens.
Pros
- Helps disperse heat effectively
- Suitable for multiple components
- Non-toxic and non-corrosive
- Thermal conductivity > 3.17
- Includes application tool
Cons
- May not suit extreme overclocking
- Packaging varies
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This paste is non-toxic non-corrosive and non-electrical conductive ensuring safety during application. The high temperature resistance allows it to function reliably in demanding environments. It also includes a spatula for precise and mess-free application.
While it may not meet extreme overclocking requirements it serves general gaming and workstation needs. Packaging differences can occur but the core performance remains consistent. These trade-offs are acceptable given its cost-effective nature.
Ideal for budget-conscious builders needing reliable thermal performance without high costs. We recommend it for standard cooling solutions where safety and ease are priorities. This product offers solid value for everyday computer assembly tasks.
Versatile Component Suitability
This paste is suitable for a wide range of components including CPUs GPUs and chipsets.
Safe and Easy Application
Non-toxic and non-electrical conductive with a included spatula for easy installation.
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6. MYQ058-100g – High Performance Heatsink Compound
MYQ058-100g
5.8W/m-k conductivity
10000V insulation
-20C to 230C range
SGS RoHS compliant
MYQ058-100g delivers superior thermal conductivity of 5.8 W/m-k with graphite and metal powders. Rated at 4.6 stars it withstands over 10000 volts for reliable component protection. This paste is designed for efficient heat transfer away from CPUs and GPUs.
Pros
- Superior thermal conductivity
- Safe high-voltage insulation
- Long-lasting stable performance
- Wide temperature compatibility
- Eco-friendly compliant
Cons
- Rating slightly below top tier
- May require careful application
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Its low thermal resistance and stable consistency prevent drying or separation over time. The compound works reliably from negative 20 to 230 degrees Celsius continuously. This versatility makes it suitable for both everyday and industrial use.
The rating is slightly below top-tier brands but still strong for its price point. Careful application ensures optimal results as with any thermal paste. These minor differences are acceptable given its high performance specs.
We recommend this for users needing high conductivity at a reasonable price. It is eco-friendly with SGS and RoHS compliance ensuring safety. Choose it for demanding environments requiring robust thermal management.
Superior Thermal Conductivity
Formulated with high-performance graphite and metal powders for conductivity of 5.8 W/mK.
Safe High-Voltage Insulation
Withstands over 10,000 volts eliminating risks of short circuits for sensitive components.
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7. HY-510-100g – Stable Heatsink Compound
HY-510-100g
1.93W/m-k conductivity
Non-Conductive silicone
-30 to 280C range
Metal-free
HY-510-100g ensures heat generated by CPUs and GPUs is effectively dissipated. Rated at 4.6 stars its thermal conductivity is 1.93 W/m-k ensuring good temperature reduction. The low thermal resistance keeps the paste mushy for a long time.
Pros
- Excellent thermal conductivity
- High durability
- Easy to use
- Safe application
- High-cost performance
Cons
- Lower conductivity than advanced pastes
- Not ideal for extreme overclocking
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It is easy to use with ideal consistency even for beginners. The paste is non-electrically conductive eliminating risks of short circuits and protecting VGA cards. Its wide operating temperature range makes it stable in extreme environments.
The lower conductivity limits it from extreme overclocking but serves general use well. High cost performance offers value for users needing bulk quantities. These limitations are acceptable given its safety and ease of application.
We recommend this for general cooling needs where safety and reliability matter most. It is ideal for PC gamers and professionals using standard cooling solutions. Choose it for consistent performance across varied computing environments.
Excellent Thermal Conductivity
Thermal conductivity of 1.93 W/m-k ensures heat is effectively dissipated for temperature reduction.
High Durability and Stability
Low thermal resistance keeps the paste mushy for a long time without compromising over time.
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8. G104 100g – Durable Heatsink Compound
G104 100g
1.63W/m-k conductivity
Non-Electrical Conductive
Low thermal resistance
Includes spatula
G104 100g helps disperse heat from CPU to heatsink effectively. With a rating of 4.8 stars it is non-electrically conductive and non-toxic. Its thermal conductivity is 1.63 W/m-k with resistance below 0.249 C-in2/W.
Pros
- Helps disperse heat effectively
- High temperature resistance
- Non-toxic non-corrosive
- Low thermal resistance
- Large 100g pack
Cons
- Lower conductivity than premium brands
- Packaging may be basic
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This paste is suitable for CPUs GPUs and high power LEDs among other components. The high temperature resistance and non-corrosive nature ensure long-term safety. It comes with a spatula for precise application tasks.
Lower conductivity means it is not for extreme CPU but great for bulk. Packaging may be basic but the paste quality remains consistent and reliable. These minor drawbacks do not impact its effectiveness for typical use.
Ideal for technicians and hobbyists needing a large volume of reliable thermal paste. We recommend it for applications requiring non-conductive and temperature-resistant properties. This product offers a practical solution for general heat management.
Helps Disperse Heat Effectively
Helps disperse the heat from CPU to heatsink effectively for better thermal management.
High Temperature Resistance
Features high temperature resistance and non-toxic properties ensuring safe and durable use.
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9. Dow Corning 340 – Professional Heatsink Compound
Dow Corning 340
0.67 W/m-K conductivity
210 V/mil dielectric
Non-flowing non-curing
142g size
Dow Corning 340 is a silicone thermal compound designed for efficient heat transfer. With a 4.9 rating it provides reliable thermal coupling for PCBs and electronic chips. Its high dielectric strength ensures excellent electrical insulation and safety.
Pros
- High thermal conductivity
- High dielectric strength
- Non-flowing and non-curing
- Excellent electrical insulation
- Suitable for industrial use
Cons
- Lower thermal conductivity for CPUs
- Premium pricing
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The compound is non-flowing and non-curing effectively transferring heat without hardening. It is ideal for industrial equipment and automotive applications where stability is crucial. This versatility makes it a top choice for professional settings.
Its lower thermal conductivity compared to CPU pastes limits gaming PC use. However for electrical assemblies the high insulation value is unmatched. These trade-offs are acceptable for its intended industrial purposes.
We recommend this for engineers and technicians requiring certified insulation and coupling. It is perfect for scenarios where safety and non-flowing properties are priorities. Choose it for professional-grade electrical and thermal coupling needs.
High Dielectric Strength
Provides excellent electrical insulation and safety with high dielectric strength properties.
Non-Flowing and Non-Curing
Non-flowing and non-curing formula effectively transfers heat for reliable cooling.
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10. Thermal Paste CPU 1.8g – Starter Heatsink Compound
Thermal Paste CPU 1.8g
Carbon microparticles
Metal-free non-conductive
Lasts 5 years
Includes toolkit
Thermal Paste CPU 1.8g is a starter kit ideal for small cooling projects. Rated at 4.7 stars it uses carbon microparticles for extremely high thermal conductivity. It is metal-free and non-conductive eliminating risks of short circuits.
Pros
- Metal-free non-conductive
- Better than liquid metal
- Excellent performance
- Ideal consistency
- Easy to apply
Cons
- Very small 1.8g size
- Limited applications
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This paste offers excellent performance ensuring heat is dissipated quickly and efficiently. Its ideal consistency makes it very easy to use even for beginners. The kit lasts at least five years providing long-term protection.
The small size limits its use to single CPU or GPU applications. However the cost and ease of use make it a great entry option. These limitations are acceptable for users needing minimal paste for one task.
We recommend this for beginners needing a safe and effective thermal solution. It is perfect for single system builds where simplicity is valued. Choose it for easy and secure thermal interface installation.
Better Than Liquid Metal
Made of carbon microparticles guaranteeing extremely high thermal conductivity.
Excellent Performance
Ensures that heat from the CPU/GPU is dissipated quickly and efficiently.
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Buying Guide – How to Choose the Best Heatsink Compound
Selecting the right thermal paste involves understanding several critical factors that impact performance and safety.
Thermal Conductivity
Thermal conductivity measures how efficiently a paste transfers heat. Higher values in W/mK are generally better for high-performance CPUs. Look for pastes with at least 3 W/mK for demanding workloads.
A higher thermal conductivity ensures better heat dissipation and lower operating temperatures.
Electrical Conductivity
Metal-based pastes can be conductive and cause short circuits if spilled. Non-conductive silicones and ceramics are safer for standard users. Check labels for non-electrical conductive claims.
Non-conductive compounds reduce the risk of accidental damage to motherboard components.
Viscosity and Ease of Application
Paste consistency affects how easily it spreads during installation. Thicker pastes stay in place better while thinner ones fill gaps more completely. Choose based on your experience level.
Ideal consistency helps avoid spills and ensures uniform coverage on the processor surface.
Durability and Longevity
A good paste should not dry out or pump out over time. Products claiming 5 to 8 years of life reduce maintenance needs. Stable formulas maintain thermal performance during extended use.
Long-lasting pastes provide consistent thermal performance without frequent reapplication.
Application Size and Packaging
Package size ranges from grams to tubes depending on usage needs. Consider how many builds you plan to complete with one tube. Large kits are cost-effective for workshops.
Choosing the right package size ensures you have enough material for your projects.
Operating Temperature Range
Pastes must withstand heat without degrading. Look for wide temperature ranges suitable for your environment. Standard ranges cover most consumer PC scenarios.
Wide temperature tolerance ensures reliable performance in various cooling conditions.
Safety and Environmental Compliance
Safety features like non-toxic and non-corrosive labels are important for handling. Certifications like RoHS compliance ensure environmental safety. Prioritize products with clear safety standards.
Compliance standards help ensure the product is safe for both users and the environment.
Brand Reputation and Warranty
Trusted brands often offer better quality control and support. Check reviews for reliability and customer feedback. Warranties or satisfaction guarantees add security to purchases.
Reputable brands provide assurance of consistent quality and reliable performance.
How to Use and Care for Your Heatsink Compound
Clean the processor surface thoroughly with alcohol before applying any paste. Remove old residue using lint-free wipes to ensure a smooth surface for new application. A clean base improves thermal transfer efficiency significantly.
Apply a small amount of paste directly to the center of the processor. Spread it gently with a spatula or rely on the heatsink pressure to distribute it evenly. Avoid overfilling as excess paste can cause short circuits.
Store the paste in a cool dry place to maintain consistency. Keep the tube tightly sealed after use to prevent drying or contamination. Proper storage extends the shelf life of the product for future use.
Frequently Asked Questions
What is heatsink compound used for?
Heatsink compound is used to fill microscopic gaps between the CPU and heatsink for efficient heat transfer. It ensures that thermal energy moves away from the processor effectively. This helps prevent overheating and maintains stable system performance.
Do all processors need thermal paste?
Most modern processors require thermal paste unless they come with pre-applied solutions. Standard stock coolers usually ship with thermal paste already applied. For aftermarket coolers you must apply your own compound for proper function.
How often should you replace thermal paste?
Thermal paste typically lasts between three to five years depending on quality and usage. High-quality pastes may last up to eight years without replacement. Check temperatures periodically to see if a refresh is needed.
Can you use too much thermal paste?
Yes using too much can cause spillage and potentially short circuit components. Excess paste can also reduce thermal efficiency by creating air gaps. A thin even layer is sufficient for effective heat transfer.
Is liquid metal safer than standard paste?
Liquid metal is not safer as it is electrically conductive and risky for beginners. Standard paste is safer due to non-conductive properties. Only experts should handle liquid metal for cooling tasks.
What temperature should thermal paste withstand?
Quality thermal paste should withstand temperatures above 150 degrees Celsius easily. Many products are rated up to 200 degrees for safety. This ensures stability under heavy CPU loads and high stress.
Why does my paste dry out quickly?
Paste drying out quickly may be due to poor quality or improper storage. Exposure to air or heat can accelerate evaporation and hardening. Store sealed tubes in cool dry places to prolong life.
Final Thoughts on Choosing the Best Heatsink Compound
We have reviewed the top ten heatsink compounds offering various solutions for different cooling needs. Each product provides distinct advantages depending on performance requirements and safety priorities.
Prioritize thermal conductivity and safety features based on your specific system components. Consider the package size and application method that suits your building style best.
Remember to check current prices and availability before making a purchase decision. Our guide serves as a reference to help you find the ideal thermal paste for your build.