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White thermal paste in 500g container, low viscosity compound for CPU GPU heatsinks

CS Labs

CS Labs K4-PRO Thermal Paste 500g K>4,6 W/mK

SKU CH-TX7Y-XWYXM

High-conductivity thermal paste rated above 4,6 W/mK, supplied in a 500 g tub for more than 2500 CPU or GPU applications

  • Product weightWhite Thermal Paste
  • High thermal conductivity K>4,6 W/mK for efficient heat transfer
  • Non-electrically conductive paste safe for GPU and CPU applications
  • Low viscosity fills microscopic gaps between component and heatsink
  • Withstands temperatures up to 220 °C for long-lasting reliability
  • 500 g tube provides enough paste for over 2500 applications

Professional Thermal Compound

CS Labs K4-PRO thermal paste is a high-quality compound developed for computer BGA components including GPUs and CPUs. It is produced in Thessaloniki, Greece as part of a research project supported by Greece and the European Union. The low-viscosity formula covers microscopic gaps between heat sink and component perfectly. Testing follows a comparative method documented in 2014.

Suitability & Limitations

This paste suits technicians and enthusiasts who need a non-electrically-conductive compound that withstands temperatures up to 220 Celsius and offers practically infinite operational life. Each application uses less than 0.2g, so the 500g container provides enough material for more than 2500 uses. Buyers who only need a single application or a small syringe will find this quantity excessive.

Deciding Specification

Thermal conductivity exceeds 4,6 W/mK, which is three times higher than common thermal pastes used in computers and commercial electronics. This single figure determines whether the compound meets the heat-transfer requirement for a given BGA rework or long-lasting cooling application.

How it compares

Measured against everything we stock in Thermal Paste, at today’s prices. Recalculated every night.

Price $62.99
Pricier than about 90% of the 498 comparable items (median $12.99).

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Specifications

Size & build
Product weightWhite Thermal Paste

Questions about this item

How much thermal paste is needed per application on a CPU or GPU?

Each application uses less than 0.2 g, so the 500 g container provides enough material for over 2500 separate installations.

What is the correct method for applying this low-viscosity compound?

Apply a small amount directly onto the component; the paste becomes especially fluid when heated during first use and spreads to fill microscopic gaps between the die and heat sink.

When should the thermal paste be replaced on a computer?

Replace the paste every time the heat sink is removed for cleaning, upgrades or other maintenance; reusing old paste prevents proper contact and leads to overheating.

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