Overheating of the processor is one of the most common reasons for decreased performance and sudden shutdowns of a laptop. Even if your ASUS ROG, Lenovo Legion or MacBook Pro It works flawlessly; over time, the factory thermal paste loses its properties, turning into a dry crust. This leads to an increase in temperatures under load to 95–105°C — critical values at which throttling or emergency shutdown is triggered.

Replacing thermal paste is a procedure that you can perform yourself, saving on the cost of a service center. But accuracy is important here: incorrect application or choosing a low-quality material can aggravate the problem. In this article we will analyze step-by-step algorithm from disassembling a laptop to testing the result, and we’ll also tell you what mistakes beginners most often make. If you have never held a screwdriver in your hands T5 or PH00 — don’t worry: the instructions are adapted for users without experience.

Why thermal paste needs to be changed: signs and consequences of overheating

Thermal paste is heat-conducting composition, filling the microscopic gaps between the processor cover and the heatsink. Over time, it dries out, loses its elasticity and ceases to effectively remove heat. Here are the key signs that it's time to act:

  • 🔥Laptop turns off spontaneously while gaming, rendering or compiling code.
  • 🐢 Performance drops: FPS in games drops by 30–50%, although the drivers and OS are fine.
  • 🌡️CPU temperature in HWMonitor or Core Temp under load exceeds 90°C (for Intel Core i7/i9 or AMD Ryzen 7/9).
  • 💻 The laptop case becomes hot to the touch even when watching a video or working in a browser.
  • 🔊 Coolers operate at maximum speed constantly, and not just under load.

If you ignore these signals, the consequences can be serious: from CPU chip degradation (especially relevant for Intel 12–14 generations) to chip detachment from the substrate (found in AMD Ryzen 5000/6000 at extreme temperatures). In the worst case scenario, the motherboard will need to be replaced.

⚠️ Attention: If the laptop is under warranty, disassembling it yourself will void it. Check with the manufacturer for conditions before starting work.
📊 How often do you check your CPU temperature?
  • Never
  • Only when the laptop slows down
  • Regularly, once a month
  • I constantly monitor

Which thermal paste to choose: 2026 rating and beginner mistakes

The thermal interface market is full of options - from budget KPT-8 up to bonus Thermal Grizzly Kryonaut. But a high price does not always guarantee the best result. Here are the key selection criteria:

Paste type Thermal conductivity (W/mK) Service life Best models For which laptops
Silicone 3–5 1–2 years Arctic MX-4, Noctua NT-H1 Office laptops, weak gaming laptops
Metal-containing 8–12 3–5 years Thermal Grizzly Kryonaut, Coollaboratory Liquid Ultra Gaming laptops, workstations
Liquid metal 30–70 5+ years Thermal Grizzly Conductonaut, Coollaboratory Liquid Pro Extreme acceleration Intel Core i9/AMD Ryzen 9
Ceramic 2–3 1 year Arctic Silver 5 Budget laptops, undemanding tasks

Errors when choosing:

  • 💰 Overpayment for the brand: Thermal Grizzly Kryonaut Justified only for top processors. For Intel Core i5 or AMD Ryzen 5 that's enough Arctic MX-6.
  • 🔌 Using liquid metal without experience: it conducts electricity and can short-circuit contacts if applied carelessly.
  • 🕒 Ignoring service life: cheap pastes (KPT-8) dry in 6–12 months.
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Before purchasing, check the compatibility of the paste with your processor. For example, Coollaboratory Liquid Ultra not suitable for aluminum radiators - it corrodes them.

Preparing for the procedure: tools and disassembling the laptop

To replace thermal paste you will need:

  • ⚒️ Screwdriver set: T5, T6, PH00 (for most laptops).
  • 🧴 Thermal paste (3-5 g is enough for 2-3 applications).
  • 🧻 Lint-free napkins or coffee filters.
  • 💧 Isopropyl alcohol (90%+). Do not use vodka or cologne!
  • 🔍 Plastic spatula or mediator for neatly detaching cables.
  • 📸 Smartphone for photographing disassembly stages.

Disassembling a laptop is the most critical step. Algorithm of actions:

  1. Turn off the laptop, unplug the charger and remove the battery (if it is removable).
  2. Turn the device over and remove all screws on the bottom cover. Please note: Some screws may be hidden under feet or stickers.
  3. Using a plastic spatula, carefully pry the lid off, starting at the corner. Don't use force - Many laptops have latches.
  4. Take photographs of the location of the cables and cables before disconnecting. For example, in Lenovo ThinkPad fragile connectors are common ZIF.
  5. Disconnect the cooling system: it is usually secured with 4-6 screws. Be careful - the heatsink may stick to the processor.
⚠️ Attention: In laptops Apple MacBook Pro (2016–2020) and some models Dell XPS The battery is glued to the case. To extract it you will need special device (For example, iFixit Battery Lever) or heating with a hairdryer.

Power off and battery removed|

Photos taken of the internal structure|

All tools and consumables are prepared|

Compatibility of thermal paste with radiator has been checked|-->

Removing old thermal paste: what and how to clean it

Old thermal paste cannot simply be wiped off with a napkin - it leaves greasy marks that impair thermal conductivity. Correct cleaning order:

  1. Dampen a lint-free cloth isopropyl alcohol (do not pour alcohol directly onto the board!).
  2. Gently wipe the surface of the processor and heatsink in a circular motionwithout pressing hard.
  3. For dried residues, use plastic spatula or toothpick. Metal objects are prohibited!
  4. Repeat the procedure 2-3 times until the surface is perfectly clean. Check the result at an angle - there should be no streaks.

What to do it's impossible:

  • 🧹 Use cotton swabs - they leave lint.
  • 💦 Wash the board with water or soap solution.
  • 🔥 Dry with a hairdryer - this can damage the microcircuits.
  • 🧴 Apply new paste to a dirty surface.

Pay special attention chipset and video card (if it is discrete). In laptops MSI or Acer Predator often there are separate radiators for NVIDIA RTX - They also need to be cleaned.

What to do if thermal paste gets on the contacts?

If thermal paste (especially liquid metal) gets on the contacts around the processor:

1. Immediately unplug your laptop.

2. Gently remove the paste toothpick, soaked in alcohol.

3. Check the circuits with a multimeter for short circuits (if you have the skills).

4. Let the board dry for 24 hours before turning it on.

In difficult cases, contact the service - independent intervention can lead to failure of the motherboard.

How to apply thermal paste correctly: technique and quantity

The most controversial stage is the amount of paste. The optimal layer for laptops is 0.1–0.3 mm (the size of a grain of rice for processors with an area of up to 200 mm²). Excess paste will lead to “overflow” to the edges and deterioration of heat transfer, and too little will lead to air gaps.

Step by step instructions:

  1. Place the laptop on a flat surface. The processor must be horizontal.
  2. Apply thermal paste to the tip of a plastic spatula or spatula (come with some pastes, for example, Noctua NT-H1).
  3. Apply the paste to CPU center and distribute it evenly plastic card (for example, a credit card) or a special applicator. Movements should be direct, without pressure.
  4. For processors with uneven surface (For example, AMD Ryzen 5000) use the cross method: apply 4-5 dots of paste and spread them out.
  5. Make sure the paste covers the entire surface of the crystal, but does not extend beyond its edges.

Common mistakes:

  • 🎨 Applying paste in “drops” without distribution leads to an uneven layer.
  • 🖌️ Using your finger - oil from the skin worsens thermal conductivity.
  • 🔄 Reuse the paste after distribution - it loses its properties when in contact with air.
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For laptops with integrated graphics (e.g. Intel Iris Xe) Apply the paste to both the processor and the video card chip if they are located under the same heatsink.

Assembling the laptop and checking the result

After applying the paste, all that remains is to assemble the laptop and check the effectiveness of the work done. Follow the reverse order of disassembly:

  1. Reinstall the radiator and evenly tighten the screws diagonally (criss-cross pattern). Do not overtighten as this may deform the board.
  2. Connect all the cables and cables, focusing on the photographs taken earlier.
  3. Install the bottom cover and tighten all screws. Check for any play.
  4. Connect the charger and turn on the laptop.

Now you need to test the temperatures. Use the utilities:

  • 📊 HWMonitor — shows the temperatures of all cores and the video card.
  • 🎮 MSI Afterburner + RivaTuner - for monitoring in games.
  • 🔬 Prime95 or Cinebench R23 - for load test.

Normal temperatures after replacing paste:

  • 🖥️ In idle time: 35–50°C (depending on ambient temperature).
  • 🎮 Under load: 70–85°C for Intel And 65–80°C for AMD.
  • ⚠️ Critical threshold: 95°C — when exceeded, throttling is triggered.
⚠️ Attention: If temperatures have not changed or increased, check:

- Correct installation of the radiator (gaps are possible).

- Quality of paste application (may be too little or too much).

- Cooler operation (dust in the bearing or malfunction).

Common mistakes and how to avoid them

Even experienced users sometimes make mistakes. Here are the top 5 mistakes and their consequences:

Error Consequences How to avoid
Using expired toothpaste Reduced thermal conductivity by 30–50% Check the production date on the tube
Uneven tightening of radiator screws Radiator misalignment, incomplete contact with processor Tighten the screws in a criss-cross pattern
Applying paste to a dirty surface Air gaps, overheating Clean with alcohol until it squeaks.
Using liquid metal without insulation Short circuit, motherboard failure Paste Kapton tape to the contacts around the processor
Forgot to connect the cooler Instant overheating and shutdown Check all connectors before assembly

You need to be especially careful with laptops Apple And Microsoft Surface — their cooling systems often have non-standard mountings. For example, in MacBook Pro M1/M2 The heatsink is glued to the processor, and its removal requires heating up to 60–70°C hairdryer

FAQ: answers to frequently asked questions

❓ How much thermal paste do you need for a laptop?

Sufficient for most laptop processors (up to 200 mm² area) 0.5–1 g pasta. One tube Arctic MX-6 (4 g) is enough for 4-5 applications. Liquid metal (Conductonaut) even less is required - 0.1–0.3 g.

❓ Is it possible to use thermal paste from a computer for a laptop?

Yes, but take into account the specifics: in laptops, processors are smaller in area, so the paste needs to be applied thinner. For example, Noctua NT-H2 Suitable for both PCs and laptops, and Coollaboratory Liquid Ultra requires caution due to high fluidity.

❓ How often should you change the thermal paste in your laptop?

The period depends on the type of paste and operating conditions:

- Silicone (Arctic MX-4): once every 1.5–2 years.

- Metal-containing (Kryonaut): once every 3–4 years.

- Liquid metal: once every 5+ years.

In gaming laptops (eg. ASUS TUF or MSI GE76) paste dries faster due to high temperatures.

❓ What to do if after replacing the paste the laptop heats up more?

Probable reasons:

1. Incorrect amount of paste (too much or too little).

2. Poor radiator contact with the processor (check that the screws are tight).

3. Dust in the radiator - Clean it with compressed air.

4. Cooler malfunction (measure RPM in HWMonitor).

If the problem persists, repeat the procedure or contact service.

❓ Is it possible to apply thermal paste to a laptop video card?

Yes, if you have a laptop discrete video card (For example, NVIDIA RTX 3060 or AMD Radeon RX 6700M). Use the same paste as for the processor, but apply thin layer (0.1–0.2 mm). In integrated graphics (for example, Intel UHD) separate application is not required - it is cooled through the processor.