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Two packets of thermal paste, one syringe and one tub, plus a wooden spatula in a branded zip bag

CS Labs

CS Labs K5 PRO 20g & K4 PRO 10g Thermal Paste Set

SKU CH-25T9-9PQ1V

Set includes 20 g gummy paste for memory gaps up to 3 mm and 10 g low-viscosity paste for GPU and CPU, both non-conductive and rated from -90 °C to 250 °C

  • Product weightThermal Pads
  • K5 PRO replaces thermal pads up to 3 mm gap with gummy paste
  • K4 PRO syringe delivers high-conductivity paste for GPU and CPU dies
  • Both compounds are non-electrically conductive for safe application
  • Operational range from -90 °C to 250 °C suits extreme environments
  • Set includes 20 g K5 PRO, 10 g K4 PRO, spatula and instructions

Dual-formula thermal set for BGA rework

The CS Labs K5 PRO and K4 PRO set pairs a viscous 20 g gummy paste with a low-viscosity 10 g syringe paste. Both compounds are non-electrically-conductive and rated for continuous operation from -90 °C to 250 °C. They are manufactured in Greece with no expiration date.

Suits builders replacing dried pads on GPU memory

The K5 PRO replaces soft thermal pads up to 1 mm thick and fills gaps to 3 mm on memory modules, VRM sections and similar surfaces. The K4 PRO covers main GPU and CPU dies. Buyers needing a traditional pad sheet or a single universal paste should look elsewhere.

Lab-verified conductivity exceeds standard pastes

Testing by the Computer Systems materials science laboratory in 2014 showed K5 PRO above 5,3 W/m·K and K4 PRO above 4,6 W/m·K, roughly three times typical commercial compounds. The 20 g pack yields 20 to 40 applications and includes a wood spatula and instructions.

How it compares

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

Price $20.99
Pricier than about 75% of the 498 comparable items (median $12.99).

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Specifications

Size & build
Product weightThermal Pads

Questions about this item

Will the K5 PRO 20g paste work alongside the original thermal pads on my RTX 3080 memory modules?

Yes. K5 PRO is designed to replace soft thermal pads up to 1 mm thick and can fill gaps up to 3 mm, making it compatible with the memory layout on cards such as the RTX 3080.

How can I confirm the K5 PRO paste is performing correctly after applying it to my GPU memory?

Monitor memory junction temperatures under load; the paste operates from -90 °C to 250 °C and should show lower peak temperatures than the original pads if applied correctly.

What does the set include and do I need any extra tools?

The set includes one 20 g packet of K5 PRO, one 10 g syringe of K4 PRO, a wood spatula for application and an instruction flyer; no additional tools are required.

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