if you can, then to remove the residue, try using isopropyl (rubbing) alcohol that you can buy at any pharmacy store. use a cotton ball or something and dab it and rub it on heatsinks to dissolve the adhesive residue. then it should evaporate..
Considering this, how do I remove old thermal paste from my CPU?
Use the swab (or whatever) to wipe off the excess paste. Then use the swab moistened with iso-propyl alcohol (rubbing alcohol) to remove the film leftover. Then repeat until it is clean.
Secondly, does thermal paste expire? It depending on the solvents used in the making of the compound which may dry over the years, and not the thermal paste. This is not a reason to get stressed as the paste is still going to do its job, even when the inner substances are dry! So, there is no reason to replace the dried thermal compound.
Also know, do you have to clean off old thermal paste?
Yes, you should always remove/clean the old thermal material when changing the heatsink and apply new thermal compound(as a general practice). As previously indicated, this prevents voids/gaps/bubbles/poor seals.
How much thermal paste is too much?
Putting too much paste on a socket generally won't hurt thermal performance, because the act of tightening down the cooler squeezes out the excess. Too little paste is bad, but anything above the minimum threshold will have the same effect once the cooler is tightened down.
Related Question Answers
Can I use water to clean off thermal paste?
For precautions, go buy some isopropyl alcohol and a lint-free cloth to make sure that the CPU is completely clean. Water and electronics are fine, as long as no power is being applied.Can I use vodka to clean thermal paste?
No. I'm pretty sure Vodka will leave a residue. Just wipe it off as best you can and replace the thermal paste. Redo it when you get rubbing alcohol.Do I need to reapply thermal paste after removing heatsink?
Yes, clean the old stuff off the chip and the heatsink and then reapply. Yes. The reason is that when you remove the heatsink, the seal between the chip and heatsink is broken that was previously made by the thermal paste. The old thermal paste will not be able to conduct as much heat as the new paste.Can I use hand sanitizer to remove thermal paste?
Elite Member. The stuff that is in there to soften/protect the skin might leave some unwanted residue. Clean it with sanitizer, dry it and then do additional thorough clean/dry with paper towel (like bounty).Can I use nail polish remover to remove thermal paste?
Isopropyl alcohol would work well, even in 91% concentration a Nail polish remover contains acetone but also a bunch of other stuff you don't want as a residue on your heatsink. It's better to use 91% IPA even if it is 9% water by volume, dry it off gently and dust off lint after removing the old paste.Can you use baby wipes to remove thermal paste?
No you do not clean thermal compound from a CPU or GPU with baby wipes, because they contain multiple additives like lanolin and such as that, which is great for a baby's bottom but not for your CPU or GPU.What happens if you touch thermal paste?
It means that you'll get uneven heat transfer. Overheating may occur in the area where the air bubbles are trapped. That's the drawback of pre-applied thermal compound. Clean it off and reapply new thermal compound.What happens if you use too much thermal paste?
If you put too much, it actually acts as an insulator, which is the exact opposite of what you want. In the worse case scenario, you can overheat and damage components. The point of thermal paste is to provide a medium to increase the thermal conductivity between your CPU and the base of the heatsink.Can too much thermal paste kill a CPU?
You probably destroyed the motherboard and cpu when you took off the heatsink/fan. If you don't take the hs/f with a twisting motion especially with too much thermal paste you'll yank the cpu out of the socket and leave a pin or two in the socket.How do you remove dried thermal paste?
if you want to remove thermal paste from the CPU or GPU then you should just use a simple cotton cloth or coffee filter dipped in rubbing alcohol or nail polish remover. Just gently wipe the thermal paste away from the processor and be careful to not to leave any fibers on the processor.Is 70 isopropyl alcohol safe for electronics?
There is no need to be concerned whether or not 70% IPA is good for electronics due to its water content, because there is no need to ever buy or use anything other than "99%" IPA. 70% IPA isn't good for anything.Can I use 70 isopropyl alcohol to clean CPU?
70% isopropyl alcohol will just take a little while longer to evaporate, make sure the CPU is completely dry before you replace the heatsink.Can I clean thermal paste with hydrogen peroxide?
Hydrogen peroxide is good for killing organic stuff(which is why it hurts when you put it on a cut) but it probably won't do much more than water in this situation. Isopropyl alcohol is like $. 50/bottle and it'll clean better than H2O2 will(and it'll evaporate a lot faster).How do I clean and apply thermal paste?
Just apply a drop or two to the old material and let it sit for a minute while the cleaner breaks up the grease in the thermal paste. Then, wipe it clean with a lint-free cloth. A coffee filter makes a terrific, cheap lint-free cloth. Repeat the process until both the CPU and cooler are totally clean, and then move on.What happens if you don't replace thermal paste?
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.How long does thermal paste last for?
As a rule of thumb I have always reapplied thermal paste after 2 years.How long can thermal paste be stored?
A lot of people have a rule of thumb of three years, but there are plenty of thermal compounds that will last over five, as long as it is properly stored.How often should you replace thermal paste?
Thermal compound layer (thermal paste) should be replaced at least every couple of years or so, depending on your usage pattern. If the PC is running 24/7, paste will not thicken that easily over time, and should last longer theoretically.What can I use instead of thermal paste?
Mix half teaspoon of toothpaste and mucaine in the vacuum-packed container. To enjoy substitute of thermal paste, you can keep it in the fridge. Make use of Vaseline (petroleum jelly) and blend it with toothpaste. Now take a syringe to fill it with the mixture and then you conceal it on the heatsink. 
