Thermal Paste CPU 1.8g
4.7Editor score
Carbon microparticles
Includes toolkit
Five year life
In this guide
Keeping your processor cool is essential for performance. A good heatsink compound fills microscopic gaps between the chip and the cooler to ensure efficient heat transfer and prevent overheating under heavy loads.
We evaluated ten popular thermal pastes based on conductivity stability ease of application and safety features. Each product was reviewed for its ability to handle modern computing demands including gaming and workstation tasks.
Each pick highlights key strengths and ideal use cases for different systems. Prices and availability may change over time so verify current details before making a purchase decision for your specific hardware setup.
Top 3 Picks for Best Heatsink Compound
ARCTIC MX-4
4.8Editor score
High thermal conductivity
Non conductive formula
Lasts eight years
Dow Corning 340
4.9Editor score
Non flowing formula
High voltage insulation
Industrial applications
Top 10 Best Heatsink Compound in 2026 Compared
The following table provides a side-by-side comparison of all ten heatsink compounds analyzed in this guide. Use this overview to quickly identify thermal conductivity ratings package sizes and key features for each option.
ProductsSpecificationsEditor scorePrice
Editor's Choice
ARCTIC MX-4
Carbon microparticle formula
Non conductive and safe
Lasts eight years
Easy to apply
4.8Editor score
Editor's Choice
Super Lube Silicone
Non curing silicone
High dielectric strength
Resists hardening
Easy to remove
4.8Editor score
Best Premium
Easycargo Kit
200 grams total
White silicone carbon
Wide temp range
For LED GPU CPU
4.8Editor score
Arctic Silver 5
Micronized silver
Ceramic particles included
Does not bleed
3.5g package
4.8Editor score
G107 Silver
20g silver paste
Includes spatula
Non toxic formula
High temp resistant
4.7Editor score
MYQ058 100g
5.8 W/mK rating
SGS RoHS certified
Low thermal resistance
Industrial grade
4.6Editor score
HY-510 100g
4 x 25g tubes
Non conductive
Metal free formula
PS4 compatible
4.6Editor score
G104 Heat Sink
100 grams weight
Silicone grease
Includes spatula
Xbox compatible
4.8Editor score
Dow Corning 340
Non curing paste
210 V/mil strength
High dielectric
142 grams
4.9Editor score
Thermal Paste CPU 1.8g
Carbon microparticles
Includes application kit
Non conductive
Lasts five years
4.7Editor score
1. ARCTIC MX-4 – Best Overall Heatsink Compound
ARCTIC MX-4
4.8 rating
Carbon microparticle
Lasts 8 years
Non conductive safe
ARCTIC MX-4 holds a top rating for its consistent quality and high performance. It uses carbon microparticles to ensure heat moves quickly from the processor to the heatsink interface.
Pros
- High thermal conductivity
- Non conductive for safety
- Long lasting formula
- Easy application
- Reliable performance
Cons
- Package design changes
- Small size only
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This compound remains stable over time without compromising. It is metal free and non electrically conductive to protect sensitive components from short circuits during application.
The consistency is ideal for beginners and experts alike. It spreads easily without requiring excessive pressure on the CPU die during installation.
Buy this if you want reliable cooling for standard CPUs. It suits gaming rigs and workstations needing long term stability.
Superior Heat Transfer
Carbon microparticles ensure high thermal conductivity for fast dissipation.
Safe Formula
Metal free and non conductive to protect your hardware.
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2. Super Lube Silicone – Best for Electrical Safety
Super Lube Silicone
4.8 rating
Non curing silicone
High dielectric
Resists hardening
Super Lube delivers superior heat dissipation for devices needing electrical safety. It is non curing so it stays flexible and resists hardening over time.
Pros
- Stable and long lasting
- High dielectric strength
- Easy to remove
- Fills imperfections
- Non curing formula
Cons
- Higher price point
- Larger tube size
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The high dielectric strength protects sensitive components. It adheres smoothly to metal surfaces and fills imperfections with ease for full contact.
Disassembly is simple because the paste is easily removable. You will not face the mess of dried or hardened compound during maintenance.
Choose this for industrial or electrical devices. It is ideal for LEDs power diodes and components requiring insulation.
Long Lasting Flexibility
Non curing silicone stays flexible and resists hardening.
Reliable Insulation
High dielectric strength protects sensitive electronic components.
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3. Easycargo Kit – Best Value Bulk
Easycargo Kit
4.8 rating
200 grams total
Silicone carbon
Wide temp range
Easycargo offers a large 200 gram kit for multiple applications. It provides good thermal conductivity for heatsinks and various interfaces.
Pros
- Large package size
- Thermal conductivity good
- Wide temp range
- For multiple components
- Conductive grease
Cons
- Lower conductivity than premium
- Basic packaging
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The compound works across a wide temperature range. It is suitable for cooling CPUs GPUs and transistors efficiently.
The value is excellent for large builds or workshops. You get enough paste for many projects without frequent repurchasing.
Buy this for bulk thermal needs. It works well for general cooling where extreme performance is not the primary goal.
Large Capacity
200 grams provide enough paste for multiple applications.
Versatile Range
Works across wide temperature ranges for diverse uses.
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4. Arctic Silver 5 – Classic Reliability
Arctic Silver 5
4.8 rating
Pure silver particles
Does not bleed
3.5g package
Arctic Silver 5 uses pure micronized silver particles for strong thermal transfer. It ensures the best physical contact between heatsink and CPU core.
Pros
- Pure micronized silver
- Does not separate
- Ensures physical contact
- Easy to apply
- Classic reputation
Cons
- Small package size
- Higher price per gram
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The compound will not separate run migrate or bleed over time. It maintains stable performance under various conditions without settling.
Application is straightforward for most users. The texture allows even spreading with minimal effort or cleanup.
Select this for reliable PC builds. It is a trusted choice for ensuring consistent contact on processors.
Pure Silver Content
99.9 percent pure silver for strong transfer.
Stable Consistency
Does not separate migrate or bleed over time.
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5. G107 Silver – Budget Friendly 20g
G107 Silver
4.7 rating
20g silver
Non toxic
Includes spatula
G107 helps disperse heat from CPU to heatsink effectively. It is suitable for a variety of components including LEDs and chipsets.
Pros
- Disperses heat effectively
- High temp resistance
- Non corrosive
- Includes tool
- Safe to use
Cons
- Small tube size
- Basic packaging
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The paste is non toxic non corrosive and tasteless. High temperature resistance ensures it performs well under thermal stress.
You receive a spatula for application. This addition makes it easier to spread the paste evenly.
Buy this for standard desktop builds. It offers solid performance for everyday use without extra cost.
Safe Composition
Non toxic non corrosive and tasteless for safety.
Included Tool
Package includes a spatula for easier application.
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6. MYQ058 100g – High Performance Bulk
MYQ058 100g
4.6 rating
5.8 W/mK
SGS RoHS certified
100 grams
MYQ058 delivers thermal conductivity above 5.8 W/mK. It transfers heat away from CPU GPU and IC efficiently with graphite and metal powders.
Pros
- Superior thermal conductivity
- High voltage insulation
- Low thermal resistance
- Eco friendly
- Cost effective
Cons
- Requires care
- Specific industrial use
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It withstands over 10,000 volts for safety. The paste is SGS certified and RoHS compliant for environmental safety.
Consistency prevents drying out or separation. You get reliable cooling performance over time without degradation.
Choose this for demanding industrial environments. It works well for high performance CPUs requiring maximum transfer.
High Conductivity
Graphite and metal powders deliver 5.8 W/mK rating.
Safe Insulation
Withstands over 10000 volts to eliminate short circuits.
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7. HY-510 100g – Multi Tube Pack
HY-510 100g
4.6 rating
4 x 25g tubes
Non conductive
Metal free
HY-510 ensures heat from CPU or GPU is effectively dissipated. It is metal free and non electrically conductive for safety.
Pros
- Excellent thermal conductivity
- Low thermal resistance
- Safe for CPU
- Four tubes
- Stable performance
Cons
- Packaging varies
- Lower conductivity
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The four tubes allow for multiple projects or sharing. The paste stays mushy for a long time without hardening.
Wide temperature range ensures stable performance. It resists drying out over time for consistent cooling.
Buy this for multi PC setups. It is safe for all types of heatsinks including GPUs.
Multi Pack Value
Four 25 gram tubes allow multiple applications.
Safe Application
Metal free and non conductive to protect your hardware.
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8. G104 Heat Sink – Large White Paste
G104 Heat Sink
4.8 rating
100g white
Silicone grease
Includes spatula
G104 helps disperse heat from CPU to heatsink effectively. It is suitable for Xbox high power LED and other components.
Pros
- Disperses heat effectively
- High temp resistance
- Non corrosive
- For Xbox LED
- Thermal resistance
Cons
- Packaging varies
- Basic features
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The paste is non toxic non corrosive and tasteless. High temperature resistance ensures it performs well under thermal stress.
You receive a spatula for application. This addition makes it easier to spread the paste evenly.
Buy this for console and GPU cooling. It is ideal for high power LEDs needing thermal transfer.
Safe Composition
Non toxic non corrosive and tasteless for safety.
Included Tool
Package includes a spatula for easier application.
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9. Dow Corning 340 – Professional Grade Insulator
Dow Corning 340
4.9 rating
Non flowing
High voltage insulation
142 grams
Dow Corning 340 is designed for efficient heat transfer between devices. It provides reliable thermal coupling for PCB assemblies and heat sinks.
Pros
- Non flowing and non curing
- High dielectric strength
- Low bleed
- High temp stability
- Reliable cooling
Cons
- Higher price
- Industrial specific
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It has high dielectric strength and insulation performance. The paste is non flowing and non curing to ensure safety.
There is no need for ovens or curing. It directs heat away from critical components to improve efficiency.
Select this for industrial applications. It is ideal for high performance electronics and automotive equipment.
Non Flowing Safety
Non flowing and non curing prevents mess and risk.
Insulation
High dielectric strength ensures electrical safety.
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10. Thermal Paste CPU 1.8g – Best Small Pack
Thermal Paste CPU 1.8g
4.7 rating
Carbon microparticles
Includes toolkit
Lasts 5 years
BSFF uses carbon microparticles to guarantee high thermal conductivity. It is metal free and non conductive to eliminate risk of short circuit.
Pros
- Better than liquid metal
- High thermal conductivity
- High durability
- Easy to apply
- Safe application
Cons
- Small size
- Basic toolkit
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This paste does not compromise over time. It lasts at least five years without needing reapplication.
Ideal consistency makes it easy to use for beginners. It dissipates heat quickly and efficiently from CPU GPU.
Buy this for small single builds. It is a safe cost effective choice for new PC builders.
Durability
Lasts at least five years without compromise.
Easy Application
Ideal consistency makes it easy to use for beginners.
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Buying Guide – How to Choose the Best Heatsink Compound
Choosing the right compound requires evaluating thermal properties and application needs. This guide outlines the key factors to consider before purchasing for your hardware.
Thermal Conductivity
Thermal conductivity determines how well the paste moves heat from the processor. Higher values indicate better heat transfer efficiency which keeps components cooler.
Look for pastes with conductivity rated above 3 W/mK for best results on modern CPUs.
Electrical Safety
Non conductive formulas prevent short circuits if the paste spills onto the motherboard. Metal free pastes offer extra safety during installation.
Always choose non conductive compounds unless you have specific high performance needs requiring liquid metal.
Longevity
A good compound should last several years without drying out. Quality pastes maintain their consistency and performance over long periods.
Expect stable performance for at least five years when buying from trusted brands.
Ease of Application
Viscosity affects how easily the paste spreads. Thicker pastes can be messy while thinner ones may squeeze out too much.
Select a consistency that suits your skill level to avoid air bubbles during installation.
Package Size
Smaller tubes are fine for single builds but bulk sizes suit workshops. Ensure the package has enough paste for your needs.
Check the grams or ounces before buying to avoid running out mid install.
Temperature Range
The paste must remain stable under thermal cycling. Look for wide operating ranges to avoid hardening or melting.
Ensure the compound handles both high load heat and cold startup conditions.
Pump Out
Pump out occurs when the paste is forced out due to thermal expansion. A stable paste resists this migration.
Choose formulations that prevent pump out to maintain consistent contact.
Application Kit
Some packages include tools like spatulas or cleaning swabs. These items simplify the build process.
Prioritize kits with tools if you are building a PC for the first time.
How to Use and Care for Your Heatsink Compound
Clean the CPU surface with isopropyl alcohol before applying any paste. Ensure no old residue remains for a smooth surface.
Apply a small pea sized dot to the center of the processor. Do not spread it manually as the cooler will flatten it.
Secure the cooler evenly to spread the paste across the surface. Wipe away excess compound from the sides carefully.
Frequently Asked Questions
How often should I replace heatsink compound?
Replace every five to eight years or if temperatures rise significantly. Most pastes last this long under normal use conditions.
Is silver thermal paste safe for all CPUs?
Yes ceramic silver pastes are safe and non conductive. Liquid metal is conductive and requires extreme care during application.
Can I use silicone on electronics?
Yes silicone based compounds are standard for electronics. They provide insulation and safe heat dissipation.
What is pump out effect?
Pump out is when paste is forced out of the joint by heat cycling. Quality pastes resist this to maintain contact.
Do I need to clean the paste off?
Use isopropyl alcohol and a lint free cloth to clean it off. Old paste should be removed before applying new compound.
Is more paste better?
No excess paste can act as an insulator and reduce cooling. Use a small amount to allow the cooler to spread it.
Final Thoughts on Choosing the Best Heatsink Compound
We highlighted ARCTIC MX-4 as the best overall for its balance of safety and performance. Super Lube and Dow Corning offer specialized industrial benefits.
Prioritize thermal conductivity and electrical safety for your setup. These features ensure your hardware stays cool and protected.
Always check current prices and availability before buying. Conditions change and deals may vary depending on retailer stock.