Best Silicon Grease Under $100 (2026)
We ranked products by a value score combining thermal conductivity, form factor (paste vs liquid metal), application convenience, long-term stability, and price under $100
The Verdict
- Best Overall: Hydronaut thermal paste for high-heat cooling — Best for high-heat setups: high-conductivity paste suited to demanding CPU and GPU cooling tasks
- Best Value: M79 Liquid Metal Thermal Compound by Atomdots — Best budget liquid-metal option: indium-rich liquid-metal formula for elevated thermal transfer at a lower entry cost
This page compares silicon- and metal-based thermal greases under $100 for electronics cooling, focusing on thermal conductivity, form factor, and safe CPU/GPU use. Selections were ranked by a value score that balances conductivity, thermal stability, and user-friendly application
Top Picks
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1
Best Overall Hydronaut thermal paste for high-heat cooling
Best for high-heat setups: high-conductivity paste suited to demanding CPU and GPU cooling tasks
Hydronaut thermal paste for CPU/GPU cooling with precise syringe application. Supports overclocking with strong thermal conductivity. Customers note improved temperatures and good value
- high-performance thermal conductivity
- easy application syringe
- overclocking support
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2
Thermal Grizzly Conductonaut - 5g combo + applicators
Best for precision liquid-metal application: delivers liquid-metal conductivity with applicators for controlled spread
Thermal Grizzly Conductonaut liquid metal thermal paste for cooling CPUs and GPUs. High thermal conductivity with extended stability, but cannot be used on aluminum. Customers note notable temperature reduction and mixed ease of spread
- liquid metal formulation
- includes extra applicators
- immediate temperature reduction
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3
Thermal Grizzly Kryonaut Extreme thermal paste (3x2g) for high conductivity
Best for extreme conductivity in paste form: engineered for tight thermals and sustained performance under load
Thermal Grizzly Kryonaut Extreme paste provides high thermal conductivity for demanding configurations. Includes syringe and applicator for easy distribution; long-lasting stability up to 80°C
- extreme heat transfer
- easy application
- long-lasting effectiveness
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4
Best Value M79 Liquid Metal Thermal Compound by Atomdots
Best budget liquid-metal option: indium-rich liquid-metal formula for elevated thermal transfer at a lower entry cost
Liquid metal thermal compound with high conductivity for die applications. Notable for extreme thermal conduction and multiple die applications. customer insight: mixed data unavailable
- 79 W/m*K conductivity
- extreme thermal conductivity
- multiple die applications
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5
Thermal paste metal liquid TG-C-005-R
Best metal-conductive paste: metal-enhanced compound designed to maximize heat transfer for CPUs and GPUs
High-conductivity thermal paste with metal composition for effective heat transfer. Easy application via syringe. Customer note available for sentiment
- high thermal conductivity
- synthetic syringe application
- 5 g quantity
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6
Thermal Grizzly Conductonaut Extreme 5g liquid metal paste
Best high-volume liquid-metal: larger quantity liquid-metal paste aimed at multi-application users needing strong conductivity
High-performance liquid metal thermal paste with enhanced conductivity for CPUs/GPUs. Ideal for overclocking and long-term stability, with superior heat transfer. Customer insights: mixed/none
- liquid metal formula
- eutectic alloy
- superior heat transfer