10 Best Thermal Pastes 2026 in the United States
#1
Winner
Thermal Grizzly Kryonaut Extreme - Extremely High Performance Thermal Paste - for Maximum Thermal Conductivity While Overclocking CPU/GPU/PS4/PS5/Xbox (3 Pack of 2 Gram)
The Thermal Grizzly Kryonaut Extreme thermal paste stands out for its exceptional thermal conductivity at 14.2 W/(m·K), making it a top choice for gamers and overclocking enthusiasts who demand peak performance from their CPUs and GPUs. This high thermal transfer rate ensures that heat is effectively dissipated, which is crucial during intensive gaming or demanding applications. Users can expect impressive results, including lower operating temperatures and a quieter system due to reduced fan speeds.
Rating
10.0
Chosen by1,129
Thermal Conductivity
Ease of Application
Most important from
52 reviews
#2
Cooler Master CryoFuze Violet High Performance Thermal Paste, Nanoparticles, CPU/GPU Conductivity W/m.k= 12.6m, Non Corrosive, Temp -50°C up to 240°C for CPU and GPU Coolers (MGY-NOSG-N07M-R1)
The Cooler Master CryoFuze Violet thermal paste is designed to help cool CPUs and GPUs by efficiently transferring heat away from the chip to the cooler. Its standout feature is a high thermal conductivity rating of 12.6 W/mK, which means it’s very effective at conducting heat and suitable even for demanding or high-performance builds. The paste uses nanoparticles that improve heat transfer, and its violet tint makes it easy to see during application. It’s also electrically non-conductive and non-moisture absorbent, reducing risks of short circuits or damage due to moisture.
Rating
9.4
Thermal Conductivity
Longevity/Durability
Ease of Application
Most important from
87 reviews
#3
Arctic Silver 5 High Density Polysynthetic Silver Thermal Compound -12g (AS5-12G-R)
The Arctic Silver 5 High Density Polysynthetic Silver Thermal Compound is designed with a high emphasis on thermal conductivity, thanks to its composition of 99.9% pure silver particles. This unique formulation allows for efficient heat transfer, making it suitable for CPU heatsinks and water-cooling solutions.
Rating
9.4
Thermal Conductivity
Viscosity
Longevity and Drying Time
Most important from
687 reviews
Top 10 Best Thermal Pastes 2026 in the United States
#1
Winner
Thermal Grizzly Kryonaut Extreme - Extremely High Performance Thermal Paste - for Maximum Thermal Conductivity While Overclocking CPU/GPU/PS4/PS5/Xbox (3 Pack of 2 Gram)
Thermal Grizzly Kryonaut Extreme - Extremely High Performance Thermal Paste - for Maximum Thermal Conductivity While Overclocking CPU/GPU/PS4/PS5/Xbox (3 Pack of 2 Gram)
Thermal Conductivity: 14.2 W/(m·K)
Longevity and Drying Time: Stable up to 80 degrees Celsius
Ease of Application: User-friendly, with syringe and applicator
Chosen by 1129 this week
Cooler Master CryoFuze Violet High Performance Thermal Paste, Nanoparticles, CPU/GPU Conductivity W/m.k= 12.6m, Non Corrosive, Temp -50°C up to 240°C for CPU and GPU Coolers (MGY-NOSG-N07M-R1)
Cooler Master CryoFuze Violet High Performance Thermal Paste, Nanoparticles, CPU/GPU Conductivity W/m.k= 12.6m, Non Corrosive, Temp -50°C up to 240°C for CPU and GPU Coolers (MGY-NOSG-N07M-R1)
Thermal Conductivity: 12.6 W/mK
Longevity/Durability: non-moisture absorbent
Ease of Application: balanced thickness, spreads and cleans easily
Electrical Conductivity: electrically non-conductive
Arctic Silver 5 High Density Polysynthetic Silver Thermal Compound -12g (AS5-12G-R)
Arctic Silver 5 High Density Polysynthetic Silver Thermal Compound -12g (AS5-12G-R)
Thermal Conductivity: High
Viscosity: Triple-phase viscosity
Electrical Conductivity: Non-conductive
Longevity and Drying Time: Longevity and resistance to drying
Cooler Master MasterGel Pro V2 High Thermal Conductivity Compound for CPU Coolers (9 W/mK) – Ultra-Efficient CPU/GPU Heat Dissipation with Zero Electrical Conductivity, Applicator Included
Cooler Master MasterGel Pro V2 High Thermal Conductivity Compound for CPU Coolers (9 W/mK) – Ultra-Efficient CPU/GPU Heat Dissipation with Zero Electrical Conductivity, Applicator Included
Thermal Conductivity: 9 W/mK
Material Type: Polycarbonate (PC)
Ease of Application: Applicator included, spreads smoothly
Electrical Conductivity: zero
Noctua NT-H2 10g, Thermal Computer Paste incl. 10 Cleaning Wipes (10g)
Noctua NT-H2 10g, Thermal Computer Paste incl. 10 Cleaning Wipes (10g)
Longevity and Drying Time: 5 years CPU, 3 years storage
Ease of Application: No spreading required
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Arctic Silver 5 Thermal Compound (Pack of 2)
Arctic Silver 5 Thermal Compound (Pack of 2)
Thermal Conductivity: high-quality silver polysynthetic
Viscosity: high viscosity
Longevity and Drying Time: doesn’t dry out over time
Ease of Application: easy to apply
Noctua NT-H2 3.5g AM5 Edition, Pro-Grade Thermal Compound with Thermal Paste Guard for AMD AM5 CPUs incl. 3 Cleaning Wipes (3.5g)
Noctua NT-H2 3.5g AM5 Edition, Pro-Grade Thermal Compound with Thermal Paste Guard for AMD AM5 CPUs incl. 3 Cleaning Wipes (3.5g)
Thermal Conductivity: high-quality compound
Longevity and Drying Time: 5 years CPU, 3 years storage
Ease of Application: straightforward, no spreading needed
Thermal Grizzly Kryonaut - 3 Pack, High-Performance CPU Thermal Paste for Cooling All Processors, Graphics Cards, and Heat Sinks - Thermal Compound for Computers and Consoles
Thermal Grizzly Kryonaut - 3 Pack, High-Performance CPU Thermal Paste for Cooling All Processors, Graphics Cards, and Heat Sinks - Thermal Compound for Computers and Consoles
Thermal Conductivity: extreme
Longevity and Drying Time: effective without drying out for long
Ease of Application: syringe and spatula included
ARCTIC MX-4 (45 g) - Premium Performance Thermal Paste for All Processors (CPU, GPU - PC), Very high Thermal Conductivity, Long Durability, Safe Application, Non-Conductive
ARCTIC MX-4 (45 g) - Premium Performance Thermal Paste for All Processors (CPU, GPU - PC), Very high Thermal Conductivity, Long Durability, Safe Application, Non-Conductive
Thermal Conductivity: very high
Electrical Conductivity: non-electrical conductive
Longevity and Drying Time: excellent longevity; dries slowly
Ease of Application: ideal consistency
#10
10 Pack HY880 Thermal Paste Kit-5.15 W/MK 1 G/Pcs, High Performance Thermal Compound Paste Grease Heatsink for CPU, Processor, All Cooler Master, Computer, PS4
10 Pack HY880 Thermal Paste Kit-5.15 W/MK 1 G/Pcs, High Performance Thermal Compound Paste Grease Heatsink for CPU, Processor, All Cooler Master, Computer, PS4
Thermal Conductivity: 5.15 W/m-K
Electrical Conductivity: No risk
Longevity and Drying Time: Does not dry quickly
Ease of Application: Easy to apply
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Buying Guide for the Best Thermal Pastes
Choosing the right thermal paste is an important step when assembling or maintaining a computer, especially if you want to ensure good cooling and long-term reliability of your CPU or GPU. Thermal paste fills microscopic gaps between the processor and heatsink, allowing heat to transfer efficiently and preventing overheating. While most thermal pastes look similar, differences in their make-up and performance can impact your system’s temperature and stability. To choose the best one for you, focus on a few key specifications and always consider how you’ll be using your PC — whether it’s for basic office work, gaming, content creation, or heavy overclocking.Thermal ConductivityThermal conductivity indicates how effectively the paste can transfer heat from the processor to the heatsink and is usually measured in W/mK (watts per meter-kelvin). High thermal conductivity pastes are better at moving heat away from hot components, which is crucial for demanding tasks or overclocking. Typical thermal pastes range from about 3 W/mK to over 12 W/mK. For everyday users or office computers, lower thermal conductivity (below 5 W/mK) is usually sufficient, while gamers or those who overclock should look for something in the mid to high range (5-12 W/mK or higher). Think about how hard your system will be working—if it’s just light use, you don’t need the highest conductivity.
Material TypeThermal pastes generally come in three types: metal-based, ceramic-based, and silicone-based. Metal-based pastes tend to offer the best performance but may be electrically conductive, which means they need careful application to avoid short-circuits. Ceramic and silicone-based pastes are easier and safer for beginners as they are not conductive, though they might have slightly lower performance. If you’re assembling your PC for the first time or want to minimize risk, go for ceramic or silicone types. If you’re an experienced user seeking the best cooling, a metal-based paste may be better.
Longevity/DurabilitySome thermal pastes are designed to last longer without drying out or losing effectiveness, which is referred to as longevity or durability. This is important because dried-out paste loses its thermal properties and can lead to overheating. Pastes advertised as 'long-life' or 'extended durability' typically last several years, which is great for users who want to set and forget. If you plan to upgrade or change parts often, longevity may be less critical, but for anyone seeking reliability over several years, aim for a paste known for its durability.
Ease of ApplicationThermal pastes come in varying consistencies, from thick and pasty to very runny. Some are easier to spread or apply without mess — a valuable trait for beginners. Pastes that are too thick can be hard to apply evenly, while very runny types might leak out. Many brands provide applicators or stencils to help. If you’re new to building PCs or prefer a hassle-free experience, consider a paste noted for smooth and easy application.
Electrical ConductivitySome high-performance pastes, especially those with metal components, can conduct electricity. This means, if the paste spills onto the circuit board, it could cause a short-circuit. If you aren’t confident in applying paste carefully, or if you’re working in tight spaces, a non-conductive paste is safer — it won’t risk damaging your hardware even if a bit spills.
Curing TimeCuring time is how long the paste takes to reach optimal thermal performance after application. Some pastes perform best immediately, while others require several hours or days of use to 'cure.' For most general uses, instant or short curing times are more convenient, especially if you want reliable performance right away. If you’re willing to wait for peak performance, a longer curing time isn’t a problem.