My system doesn't have a shim between the CPU and H/S at present. I've recently read some horror stories about people bustin' CPU's due to not having one during H/S installations. I plan on upgrading ...

Okay, now I've built a number of systems in my life, but now they decide to change the way they design the chips. I've seen mention of the shims in other threads, but I'd really like to know. What do ...