Originally Posted by deepor
- No... (or yes?) There are some sort of resistors on the PCB for Haswell. People like to cover them with some kind of non-conductive material like nail polish or normal thermal paste before they put CLU onto the die. There are two reports of Haswell cracking about a month after delidding. You might want to look into that and see if something about those two reports is comparable to your gear.
- The metal object has to be grounded. A case would have to be plugged in for that. You can use the radiator in the room. Maybe your anti-static wristband has a plug for using the ground on a power outlet. Personally, I just touch the radiator or plugged in case once in a while or whenever moving around.
- It's not stuck or anything. Just take it out.
That kind of hobby vise that's intended to stay in place with a sucker will not work. If you are only worried your old vise will scratch the IHS badly, try to see if it still grips well if you put something like electric tape over the grips.
This (with two little exceptions):
Unless you have some crazy habit of shuffling about your room in wool socks on carpeting... just ground yourself first by touching something and go with it... I've literally worked on (and more to the point in
) computers and industrial controllers for more than 20 years... and I've never used a strap or flooring, etc... not saying that there isn't a posibility of a terminal static discharge... but simply that the components involved are designed to be resistant to nominal static fields and discharges. Just for grins a few years ago I tried shocking the crap out of a GPU (which should be even more sensitive than a CPU) while running in a system and then dissasembled, etc... I did the shuffle, shuffle shock cycle 10 times... to no effect... then did it 10X more directly into the die traces with the card isolated so it couldn't dissipate (rubber mat) and it still worked like a champ.
Not that there isn't something to be said for being careful... but to me it's more important to wear safety glasses than to have an AS strap on while delidding. And I used neither on any of my delids (although I wear glasses so I was somewhat protected).
Anyway the real
exception I have wasn't that but with the answer to #3 - you certainly can use MX4 on both the die and the heatspreader
. Naturally the thermal conductivity isn't quite as high, but there have been people that have successfully dropped their temps by just using AS5 on-die and between the block and IHS... so MX4 will only be better than that.