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Silver thermal paste in 3.5 g syringe

Arctic Silver

Arctic Silver 5 AS5-3.5G thermal paste 3.5g

SKU CH-4BQ6-K1X3P

High-performance silver thermal compound with 99.9% pure micronized silver for efficient CPU and GPU heat transfer

  • 9% pure micronized silver for high thermal conductance
  • Non-electrically conductive formula prevents short circuits
  • Controlled triple-phase viscosity adapts during initial use
  • Stable compound will not separate, run, migrate or bleed
  • 5 g syringe provides enough paste for multiple applications

Premium silver thermal compound

Arctic Silver 5 AS5-3.5G is a 3.5 gram syringe of thermal paste formulated with 99.9% pure micronized silver particles. It is designed for enthusiasts and system builders who need reliable heat transfer between a CPU or GPU die and a heatsink. The compound is non-electrically conductive, reducing risk if it contacts nearby traces or pins. Its controlled triple-phase viscosity adapts during installation and early use for consistent coverage.

Viscosity phases improve contact

The suspension fluid uses advanced polysynthetic oils rather than silicone, creating three functional phases. As dispensed, the paste is engineered for easy application across the die surface. During initial operation it thins to fill microscopic valleys between the die and heatsink, improving physical contact. Over the next 50 to 200 hours of use it thickens slightly to a final consistency intended for long-term stability without separating, running, migrating or bleeding.

Stable build for repeated use

The formulation resists separation and bleed, so the syringe remains usable across multiple builds without degradation. Thermal conductance exceeds 350 000W/m2 degreesC at a 0.001 inch layer, indicating efficient heat flow when applied correctly. Because it contains no silicone and stays non-conductive, cleanup is straightforward and accidental contact with components poses less risk. The 3.5 gram volume suits several standard desktop applications.

Highlights

  • 9% pure micronized silver for high thermal conductance
  • Non-electrically conductive formula prevents short circuits
  • Controlled triple-phase viscosity adapts during initial use
  • Stable compound will not separate, run, migrate or bleed
  • 5 g syringe provides enough paste for multiple applications

Specifications

BrandArctic Silver
ModelAS5-3.5G

Questions about this item

Does the 3.5 g syringe need replacement after the 50 to 200 hour break-in period?

No, the compound thickens to its final consistency during that period and is then designed for long-term stability without further replacement.

What thermal conductance limit appears first under sustained loads?

The paste is rated above 350 000 W/m²°C for a 0.001 inch layer, setting the practical conductance ceiling.

How much heat does the 99.9% silver compound add to the system during all-day operation?

The material itself generates no heat; it only transfers heat between the CPU and heatsink while remaining non-electrically conductive.

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