Choosing the right thermal paste can significantly impact CPU and GPU temperatures, thermal throttling, and overall system stability. This guide highlights five top options that balance conductivity, safety, and easy application. Whether you’re building a new rig, upgrading an older PC, or maintaining a console, these pastes deliver reliable heat transfer and long-lasting performance.
The following table summarizes the selected products, highlighting their key strengths for quick comparison:
| Product | Brand | Capacity | Notable Strength |
|---|---|---|---|
| ARCTIC MX-4 (4 g) – Premium Performance Thermal Paste | ARCTIC | 4 g | Non-conductive, carbon-based for high conductivity |
| ARCTIC MX-6 (4 g) – Ultimate Performance Thermal Paste | ARCTIC | 4 g | Lower thermal resistance than MX-4, easy application |
| BSFF Thermal Paste, 1.8 g | BSFF | 1.8 g | Carbon-based, non-conductive, durable |
| Thermal Grizzly Kryonaut – 1 g | Thermal Grizzly | 1 g | Extreme heat conductivity, ideal for demanding cooling |
| Corsair TM30 Performance Thermal Paste – 3 g | Corsair | 3 g | Ultra-low thermal impedance, easy to apply |
ARCTIC MX-4 (4 g) – Premium Performance
ARCTIC MX-4 is built around carbon microparticles that deliver high thermal conductivity while staying non-conductive and safe for sensitive components. The formula remains consistent across packaging updates, ensuring reliable performance season after season. The paste spreads easily and maintains stability under typical operating temperatures, reducing the risk of short circuits due to metal-free composition.
ARCTIC MX-6 (4 g) – Ultimate Performance
MX-6 offers a measurable reduction in thermal resistance compared with MX-4, representing a step up in performance. With more than two decades in PC cooling, ARCTIC emphasizes versatility and user-friendly application. Like MX-4, MX-6 is non-conductive and non-capacitive, minimizing short-circuit risk while enabling efficient heat transfer from CPU or GPU to the cooler.
ARCTIC MX-4 (incl. Spatula, 4 g)
This pack includes a spatula for precise application, while the MX-4 formula remains carbon-based and metal-free for safe operation. The packaging emphasizes consistent quality, with renowned heat transfer performance that ensures efficient cooling for CPUs and GPUs alike. The non-conductive nature reduces risk during re-application or repaste tasks.
BSFF Thermal Paste – 1.8 g
BSFF presents a metal-free, non-conductive carbon-based thermal paste designed for high durability and robust heat dissipation. Its composition targets quick heat transfer from CPU/GPU while maintaining safety margins to avoid short circuits, making it suitable for overclocking and long-duration loads where sustained thermal performance matters.
GENNEL GT-1 Silver CPU Thermal Paste (2×1 g)
GENNEL’s GT-1 Silver is a carbon and silicon-based compound designed for consistent performance across a wide temperature range. The two-pack setup gives flexibility for multi-CPU builds or future repaste tasks. It aims to balance high thermal conductivity with ease of handling for both beginners and enthusiasts, including a cleaning kit for simple maintenance.
Thermal Grizzly Kryonaut – 1 g
Kryonaut is renowned for extreme heat conductivity, making it a top pick for demanding setups and overclocking scenarios. The included syringe and spatula support precise, user-friendly application, helping users achieve thin, even coverage. It is designed to resist drying out at high temperatures, ensuring long-lasting thermal performance in performance-focused builds.
ARCTIC MX-6 (8 g) – Ultimate Performance
MX-6 in an 8 g tube provides ample supply for larger builds, long-term maintenance, or multiple repastes. Its lower thermal resistance compared with MX-4 continues to reflect advanced formulation, combining high conductivity with non-conductive safety. The product remains suitable for CPUs, GPUs, consoles, and laptops, supporting diverse cooling needs over time.
Corsair TM30 Performance Thermal Paste – 3 g
Corsair TM30 employs a zinc oxide-based compound designed to deliver ultra-low thermal impedance, helping CPUs and GPUs run cooler. The included applicator streamlines the spreading process, offering a straightforward solution for both upgrading existing hardware and building new systems. It is suitable for enthusiasts seeking reliable, consistent cooling improvement.
Buying Guide: Key Purchase Considerations
- Thermal conductivity and impedance: Higher conductivity reduces CPU/GPU temperatures, but extremely high performance pastes can be trickier to apply cleanly. Look for explicit thermal conductivity values and low impedance for demanding systems.
- Electrical safety: Non-conductive and non-capacitive pastes minimize risk of short circuits during installation or repaste tasks, especially on densely packed multi-GPU or CPU configurations.
- Application ease: Pastes with included tools (spatula, applicator) and simple packaging help ensure even distribution and reduce air gaps that hinder heat transfer.
- Durability and longevity: Some formulas dry out or degrade under sustained high temperatures. For long-term builds, choose pastes with proven durability and stable performance over time.
- Compatibility: Most modern pastes are universal for CPUs, GPUs, and consoles, but always verify compatibility with your specific processor and cooler type.
- Rework and cleanup: Consider ease of cleaning off old paste without residue damage. Carbon-based pastes often offer straightforward cleanup with typical isopropyl alcohol.
- Quantity and reuse: Larger tubes or multi-pack options are economical for frequent repastes or builds with multiple components. Keep in mind the paste’s shelf life and packaging integrity.
- Price-to-performance: While premium pastes may offer marginal gains, balanced options like MX-4 or TM30 often provide excellent performance at accessible prices for most users.
Usage and Maintenance Tips
- Prepare surfaces: Clean the CPU/GPU heat spreader with isopropyl alcohol and lint-free wipes before applying new paste.
- Apply correctly: Use a pea-sized dot for desktop CPUs, or follow the manufacturer’s recommended pattern. Too much paste can cause spillage and reduced contact with the heat sink.
- Check seating: After reassembly, lightly run the system and monitor temperatures to confirm proper seating and contact.
- Storage: Seal containers tightly and store in a cool, dry place to preserve viscosity and performance.
- Safety: Avoid contact with skin and eyes. If contact occurs, rinse with water and seek medical advice if irritation persists.