RaoZ

Sorry. Forgot about this as I'm active at another forum. I did the solder. And I don't recommend it. 1st try: Didn't stick. 2nd try: 4c-7c temp increase 3rd try: Shifted the heatsink too much, couldn't fit it inside the socket as it hit the VRMs. 4th try with a friend helping: 3-5c temp improvement. Got a nice thin layer of solder. I stopped here. I doubt it could get much better. Solder reacts with copper too. Not a long-term solution. ------------ Conclusion: Faster to use liquid metal than mess around trying this. Getting a direct mount heatsink seems like a better option too. I guess it was good "Sketchy Heatsinks" experience.

Sigh, this is going to be a long weekend. I guess curiosity got the cat moving. Let's hope threatening IHS with a torch helps it stick better to solder + aluminium/ copper.

glenalz81 is right. I meant soldering the CPU's delidded IHS (metal part, not the PCB) to a heatsink. Someone said it should give similar performance to using liquid metal. BTW, I have extra heatsinks and IHSs lying around, gathering dust. Thought I might do it if someone had any improvements doing it. BTW, Senzelian, great video.

I tried lapping/sanding heatsink to a mirror finish today and it gave me a 2-5c improvement. With the weekend free time coming it got me thinking, will soldering an IHS to a medium sized heatsink (easier to handle) provide ANY improvement compared to the conventional paste method? Also, what about using a gold leaf with a little grease if any needed? (Gold is softer compared copper and silver, thus covering surfaces better. Easier to find too.) Gold leaf reference PS: I got the skills and the tools to do this. Just wanted to know if anyone has tried this already to save me the time.