Can I use thermal grease on CPU?
Matthew Shields
Updated on March 11, 2026
Can I use thermal grease on CPU?
If you’re installing your own CPU cooler, however, I’d always recommend thermal goop (or paste, etc.). Thermal adhesive is also different. Your pastes and greases are technically adhesives, but not like thermal adhesive (or ‘epoxy’). If something is labeled thermal adhesive, don’t use it on your CPU!
What is silver thermal compound used for?
Arctic Silver 5 is the reference premium thermal compound. Arctic Silver 5 is optimized for a wide range of bond lines between modern high-power CPUs and high performance heatsinks or water-cooling solutions. Arctic Silver 5 contains over 88% thermally conductive filler by weight.
Is CPU thermal compound necessary?
Thermal paste, or some oily thermal interface material, is necessary because it fills in the microscopic imperfections that otherwise trap air particles between the CPU and the heatsink, preventing the CPU from properly cooling.
How much thermal grease do you put on a CPU?
Apply thermal paste onto the center of the CPU’s IHS. You only need to apply a small amount — roughly the size of a grain of rice or a pea — onto the center of the integrated heat spreader.
Does Ryzen come with thermal paste?
A rule of thumb to remember is that thermal paste will never come attached to the CPU itself. Only the Zen 2 Ryzen 9 series and Ryzen 7 XT series CPUs do not come with a cooling solution. If you purchase a CPU unboxed (or OEM), a CPU cooler will not be included; unless the CPU is inside a pre-built desktop.
Can I use toothpaste instead of thermal paste?
No, toothpaste cannot replace thermal paste although it looks similar to thermal paste, toothpaste doesn’t have any cooling properties as the thermal paste.
How do I clean thermal paste off my CPU?
Step 1: Begin by wiping the top of your CPU with the microfiber cloth to remove as much thermal paste as you can without issue. Step 2: Dip the end of a cotton swab into the rubbing alcohol, then use it to wipe the top of your CPU gently; this will help to break up any hardened thermal paste.
What happens if no thermal paste on CPU?
Not using thermal paste between the CPU and the heat sink will cause it to eventually overheat and fail. This may not happen straight away but it will happen and in a much shorter time than if you use the thermal paste.
What happens if there is no thermal paste on CPU?
What happens if you don’t have thermal paste? Things don’t work as efficiently as they should. Your CPU’s operating temperature will be higher. It may need to slow itself down (thermal throttling) to stop from overheating and failing.
What happens if I put too much thermal paste on my CPU?
When you apply too much thermal paste, it can act like an insulator. At best case, this may make the paste ineffective, and at worst case, you may damage components via overheating. Remember, the entire point of the thermal paste is to fill in the tiny gaps between the two components.
Do AMD CPU need thermal paste?
This means that AMD’s processors will, indeed, not include thermal paste; unless they are boxed with a stock cooling solution. If you purchase a CPU unboxed (or OEM), a CPU cooler will not be included; unless the CPU is inside a pre-built desktop. For second-hand CPUs, it is always best to use your own thermal paste.