What Thermal Paste Brand is Best for CPU Cooling System

If you have bought a high-end CPU that cost you a lot, you surely won’t want to use a cheap thermal paste in the cooling system. Since the thermal paste is an essential element in any cooling structure a CPU undergoes, then it is important to pick one that offers the highest thermal conductivity which will increase the heat transfer rate between the CPU and heatsink.

Why a thermal paste is needed

Just putting the cooler/block onto the heatspread (direct metal-metal contact) leaves immense amounts of gaps due to surface imperfections. Once the load lever and the plate of opened, install the socket cover on the plate. Picking the right thermal paste for CPU cooling system has a major effect on the performance of the CPU. Please check out this list in order to find the best thermal paste for CPU cooling system on the market. When there are no wrinkles in the plastic, hold the film in place with your thumb and middle finger. This is all done so that you can see the initial impact of mounting pressure and the direction that Thermal Interface Material travels. Now I could try to explain this for hours, but in hopes of not confusing you (and myself for that matter), it is basically the rate at which heat can pass through material.

Is thermal paste important

The photo below shows how the pressure from the heatsink base spreads the compound and also shows a P4 with the heat spreader removed to show the location of the actual CPU core that is the source of the heat. It’s easy to warp the mounting pins slightly, but doing so will result in cross-threading the mounting screws. If you have a bay reservoir like the one we’re using, just slide it into place and screw it into the sides like you would a DVD drive. Even if might not be visible to the naked eye, it is most definitely there. This way you can close the load plate to its original position and work on cleaning the CPU IHS and the CPU cooler.

high quality thermal paste offers best thermal conductivity

How thermal paste works

You then need to work the TIM over the face of the CPU using a small amount of pressure to push it into any surface cracks, ensuring that it’s spread evenly. Please note that allowing the system to complete a few initial thermal cycles will thin the viscosity of the material and level out the paste, which will also allow it to bleed out towards the edges. In 2017, finding the best thermal paste requires to read the reviews of experts and study their experiments. The top thermal paste recommendation in this article may be deemed the best thermal paste of 2017. Higher numbers represent better heat transfer ability as this means more Watts can move quicker through the same amount of contact area. While the Cpu core on the Athlon 64 is slightly larger than the P4 core is still much smaller than the metal CPU Cap that covers it. Be sure to alternate the turns of each screw, rather than screwing each one all the way down before starting on the next screw.

Applying thermal paste to CPU the right way

Now that everything’s in place, it’s time to connect it all with your tubing. Liquid thermal compounds only serve an (extremely) positive function in terms of filling those gaps. Make sure the ‘remove’ section faces the shoulder screw and the other side faces the hinge. You’ll need to place the CPU on a hard, flat surface while doing this, but be careful not to apply too much pressure, as you don’t want to bend any pins. Judging from our cold test, a single round drop of thermal paste roughly half the size of a BB is more than sufficient to cover the entire mating surface of a stock Intel-included cooler.

  • The thermal conductivity of air is .024 W/m-K…not very impressive, which is why you need a proper heatsink and a thermally conductive paste for your LEDs.
  • The original air cooler on this PC was pretty effective, so the CPU idle temperature in this instance dropped only a few degrees during testing, from about 43 degrees Celsius to about 40 degrees Celsius.
  • Screw your fittings into each component, making sure they’re good and tight before you continue so you don’t spring a leak. Any excess compound beyond that has an insulating effect, so less is clearly more.
  • The cap needs to be installed in such a way that four of the yellow marked area needs to clip on the inner border of the load plate.

High Quality thermal pastes for lowest temperature

The best method in our experience is to spread the TIM in a thin line from the blob to the opposite sides of the heatspreader, and then work it outwards to the other sides. Ideally, you will want to use slightly less material than the amount shown above. Thermal tape will vary by type but tends to be around .2-.25 W/m-K, so about 10 times better than air. But the motherboard temperature dropped several degrees as well. I like to screw them in finger tight, then give them a small turn with a wrench or pair of pliers to make sure they’re snug.

how thermal paste works

Its not ideal, but it sums up to a vastly more effective thermal conduction path, than just clamping metal to metal without anything to fill those gaps. Try to visit thermalcooler.com because it offers valuable information about thermal pastes and how to use them properly. You will find two finger access area on the socket. You may have used a different method yourself and, if you’re keen to share notes with other bit-tech readers, describe your own techniques in the comments.


Just remember that once heat is applied to thermal grease the viscosity will thin and spread out towards the edges just a little more, allowing the surfaces to come into closer (or direct) contact with each other. This isn’t bad for some smaller applications but if I am doing a large project and want to guarantee I’m not going to have to go back and fix my LEDs months in the future, I’m going with one of the Arctic Silver products.