Overview

Thermal Grizzly Kryonaut is a high-performance thermal paste designed specifically for overclocking, developed by the German company Thermal Grizzly. In Japan, it is officially imported and sold by Shinwa Sangyo, and is available on Amazon and major PC shops. This product comes in a 1.5ml syringe, efficiently filling the gap between the CPU/GPU heat spreader and the cooler base to minimize thermal resistance.

Key Features

  • Thermal conductivity of 12.5 W/mK, offering superior cooling performance compared to standard pastes.
  • Non-conductive and non-capacitive design reduces the risk of short circuits if accidentally spilled on the board.
  • Wide temperature range from -250°C to +350°C, maintaining stable performance under extreme conditions.
  • Syringe type makes application easy, even for beginners, allowing even spreading.
  • Long-term stability; properly applied, it maintains performance for over a year.

Compatibility Guide

Kryonaut is suitable for both CPUs and GPUs. It works with all common sockets, including Intel LGA1700/1200/115x and AMD AM5/AM4. However, it is not a liquid metal paste, so for direct-die cooling under extreme overclocking, consider other products like Conductonaut. Apply only a rice-grain-sized amount (about 0.1ml); too much paste can hinder heat transfer.

Ideal Builds

  • High-end CPUs (e.g., Core i9-13900K / Ryzen 9 7950X) with air or AIO cooling.
  • Users who want to lower CPU temperatures even at stock settings.
  • Beginners building their first PC; the paste is easy to apply and forgiving.

Upgrade Considerations

Always remove old thermal paste completely before applying new paste. Residual old paste will degrade performance. Kryonaut works well with aluminum-based coolers and also with copper bases without issues. There is no bottleneck concern; it benefits CPUs at any performance level.

Specifications

  • Capacity: 1.5ml
  • Thermal Conductivity: 12.5 W/mK
  • Temperature Range: -250°C to +350°C
  • Density: 2.5 g/cm³
  • Viscosity: 1300 Pa·s
  • Color: Grey
  • Package Dimensions: 64.01 x 64.01 x 19.3 cm
  • Weight: 5.5 g

Product Disclosure (Amazon)

  • Manufacturer: ‎親和産業
  • Brand: ‎Thermal Grizzly
  • Seller: SpaceRocky
  • Fulfilled by: SpaceRocky
  • ASIN: B00ZJSF5LM
  • Note: This article covers a manufacturer-made product based on Amazon listing details.