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Here’s all the info you need when it comes to thermal paste: What it’s for, and how to apply it to make sure your processor is properly cooled.

Posted by Qifeng Liang ·

Editor’s note: This updated guide replaces copied brand and benchmark language with a concise, manufacturer-led checklist.

What a thermal interface does

The contact faces of a processor and cooler look flat but contain microscopic irregularities. Thermal interface material fills part of those voids so heat can move from the processor heat spreader to the cooler base. It does not compensate for a loose mount, a wrong cooler or a gap that needs a pad.

Before you apply it

  • Check the cooler for factory-applied material and follow its installation manual.
  • Confirm socket compatibility, mounting hardware and the required interface type.
  • Remove old material from both contact faces and let them dry before assembly.

Application steps

  1. Place the processor correctly and avoid touching its contacts.
  2. Dispense the amount specified by the material maker near the center of the heat spreader.
  3. Lower the cooler vertically and secure it using the manufacturer’s sequence.
  4. If the cooler is removed, clean both surfaces and apply fresh material before reinstalling.

Paste, pad or phase-change material?

Use grease for a thin, conforming interface when the assembly calls for it. Use a pad when the design has a defined gap or needs a controlled thickness. Use a phase-change material only when its phase behavior and service temperatures match the assembly. Conductivity is only one selection input.

See the CTG8 thermal grease details, AP-14 pad options or XTP-001 phase-change material only after confirming the interface conditions.

Source: Intel’s thermal paste application guide. Current model specifications are controlled by each product’s Maxtor TDS/SDS.

Household substitutes for CPU thermal paste

Posted by Qifeng Liang ·

Safety correction: Household products such as toothpaste, butter, cosmetics, food, wax or paper are not approved substitutes for a processor thermal interface. They can dry, melt, separate, contaminate the assembly or migrate onto electronics. Do not use them in a working computer.

What to use instead

Use a thermal grease, thermal pad or phase-change material that is specified for the interface and operating conditions. The correct material depends on the contact geometry, required bond line, mounting pressure, temperature range and electrical constraints.

If you forgot thermal material

  1. Stop the installation and keep the cooler off the processor.
  2. Check whether the cooler has factory-applied material. If it does, do not add more.
  3. Obtain the correct material before powering the system under load.
  4. After applying it, install the cooler according to the processor and cooler instructions.

Safe replacement checklist

  • Remove all old material before applying fresh material; never layer new material over used material.
  • Use a lint-free wipe and an appropriate cleaning method, and let the contact surfaces dry.
  • Do not touch processor contacts or spread material onto surrounding components.
  • Replace the interface whenever the cooler is removed if the manufacturer’s instructions require it.

For a small PC-service pack, review Maxtor CTG8 20-pack. For a model-specific review, send the application and quantity to Technical Help.

Source: Intel’s TIM application guidance. This correction intentionally does not endorse any household substitute.

How to use the thermal grease at a better way

Posted by Qifeng Liang ·

Editor’s note: This article has been refreshed to remove legacy third-party claims and keep the guidance practical for current PC service work.

Thermal grease is used between a processor heat spreader and a cooler base to fill microscopic surface irregularities. It is a thin interface material, not a replacement for a correctly mounted heatsink.

Before applying thermal grease

  • Check whether the cooler already has factory-applied material. If it does, do not add another layer.
  • Confirm that the cooler, socket and mounting hardware match the processor. Follow the current equipment manuals.
  • Power down, disconnect the system and let the assembly cool before service.

A controlled application

  1. Remove the cooler and clean the processor heat spreader and cooler base. Use a lint-free wipe and an appropriate cleaning method; allow the surfaces to dry.
  2. Apply a small amount to the center of the heat spreader. The required amount depends on the interface size and the material instructions.
  3. Lower the cooler straight down and tighten the mounting hardware in the sequence and torque specified by the cooler maker.
  4. Do not lift and reseat the cooler after contact unless you clean and reapply fresh material.

When to choose another material

A thermal pad or phase-change material may be the correct choice when the assembly has a defined gap or a specified dry interface. Do not use grease to fill a gap that requires a pad, and do not select by conductivity alone.

For model-specific material selection, see the CTG8 product details or contact Technical Help with the interface geometry, pressure, temperature range and application.

Source: Intel’s current TIM application and removal guidance. Product values remain controlled by the applicable Maxtor TDS/SDS.