Originally Posted by strokercrate
I was wondering....
When I took off the IHS off the PCB there was one spot open from the black silicon sealant. I suspect this acted as a thermal relief.
If that is the case, when you delid remove the silicon sealant apply CLU/CLP directly to die and replace the IHS although this creates a better contact and also gain the Liquid metal benefit of heat transfer which does drastically lower temps. Wouldn't you now also be creating a heat pocket under the IHS seeing that it is now directly on the PCB without thermal relief spot?
Do you think the temps would decrease more if you filed a notch in one side on the bottom lip of the IHS allowing for thermal relief, or maybe even two notches giving a cross flow of air around the die?
Could be wrong, just a thought, wanted to see what more experienced people think about it.
When you place the IHS on the delidded chip you will notice that you can actually spin the IHS around without it touching the PCB. The clamping force of the mobo is really pushing the IHS on the die, not so much the IHS on the PCB. That doesn’t mean a notch in the IHS wouldn’t allow for more heat to escape but I have not heard of anyone trying that with success. I would be surprised if that helped much – even going direct die gives a few c better but nothing dramatic.
Originally Posted by Molokou
Tomorrow I'll be getting my H220 and I would like to re-do the CLU application on the die, and that leads me to this question for you.
¿What metal polish brand do you recommend to get the job done?
I really want to get things done the best way possible, and that includes using (if I can get it) the same products you use
I don't live in the US, but I can try to find whatever product you use (or one with identical chemical composition)
Thanks in advance for your help
For the die you really don’t need anything but 90%+ isopropyl alcohol. The die is not metal so CLU doesn’t really stick to it. The metal polish is seen in the spoiler:
Warning: Spoiler! (Click to show)
But you should only need that if you want to clean up CLU when you use it on top of the IHS for your cooler, or on a gpu block. Depending on the length of time, and other factors, you may or may not have a dried buildup on the underside of the IHS. You will just have to see how well the alcohol cleans it up, and if it still seems there is any dried on CLU there then the metal polish would be helpful.