I do run into cases where TIM has dried out. I work on a lot of OEM computers and I do see this occasionally but they are usually like 10 years old. And it probably depends on the kind and quality of paste that was used.
techiemon, your intention of not having to do another upgrade for ten years may be a little optimistic. Technology changes much too fast to make a projection that far into the future. We have no idea what changes/innovations software producers will come up with in that amount of time that could render our systems obsolete or just inadequate.
I used the paste from Noctua. And no, I am not going to keep this pc for 10 years. That was never my intention. TBH, in years past I thought replacing the pc every 2 years was necessary. But I was younger and time went by much slower, getting older, the time for replacement kept getting longer. until this last one that made it for 7 years. Ideally, sure, 10 years is great, because that 10 years will go by as fast as 2 years went by when I was 20. haha. But realistically, yeah, I know.. My hope is that I can replace this one in about 4-6 years. I think the CPU should last that even at 80C, but again, I'd like to run more cores for more time during the evenings when I shut off the AC, but I am finding tonight it may still be hard to do that. But at least during the daytime I have no issues and temps are much better. Some tweaking left to do to find the sweet spot, I think partially can be achieved to keep temps below 80. But yeah, man, I know.. 10 years, never intended to do that. It's a bit ridiculous. And I will want a 16 core 32 thread chip when they come out. woo hoo!! I actually want a 100 core chip with 200 threads, man, can you imagine?
And yeah... PC might be long gone before my next upgrade the way technology is going.
But I have say... after an incident today with a 3 year old older android phone, battery started to swell... scared the heck out of me. unplugged turned off, it is now on my balcony. I need to pull data off of it, but frankly scared to touch the thing.. Cannot plug it in, but I need to pull data... I cannot imagine portable devices being so stable anytime in the near future. PC and server still needed for the long haul. But this is way off topic now. ha