Repasting was way more work than I expected. The HMM seems to be missing a few steps. First of all, it doesn't say to remove the keyboard bezel, which is obviously required. Also, there is no way to get the cooler out without completely removing the display. In my attempts to remove the cooler, I must have cracked the edge of the frame where the cooler sits (not a big deal, it's not a critical spot). Also, the lower-right screw on the cooler didn't want to screw back in. I had to take it off again, clean off all of the paste, try to clean out the screw hole, and re-paste. There must have been some kind of debris in there. It looked like it might have been some thread lock. Even after doing that, I got the screw to bite, but it didn't go in very far so I'm not super confident about it.
Did you make sure the mounting screws are decently tight?
Also it is going to take a few days usually for the thermal paste to reach its maximum thermal performance.
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Arctic MX-4 thermal paste (tube is about a year old).
The mounting screws are in all the way. They bottom out pretty easily except for that one stubborn screw that I didn't want to overtighten for fear of stripping it.
I thought it might take some time as well for the paste to "set". I did the repaste last weekend and let it sit for 7 days. I haven't seen much of a change in that time.
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The way to paste properly is: clean everything first with e.g. isopropyl alcohol.
Use a dollop of only about 2 rice corns size and spread that evenly over the full surface with e.g. a credit card.
Do the same for CPU and GPU (if available and required).
When you put the cooler back on, before you tighten the screws, turn it left/right/left/right a few mm, then tighten the screws in sequence 1-2-3-4 or as indicated.
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Normal usage with some occasional CPU spikes sees temps in the upper 40s and 50s, so I'm thinking maybe I'm worrying too much about CPU temps when running stress. Maybe it is too much of an artificial test. Does anyone have a W530 and can report temps for comparison?
Here's a video I made running s-tui: https://asciinema.org/a/rTHES4C0niS8ZFmBbMD6nNGE4. Its about 2 minutes long. I looked at the power usage with a kill-a-watt while the test was running, and it was at 85W, and that is with the battery not simultaneously charging and the GPU effectively powered down (i.e. hybrid graphics and nothing using the GPU)! That's a lot of heat to dissipate. The LCD screen was at full brightness, so that probably contributed a little. Idle power draw is ~25W.
too bad you didnt check the forum first as I have encountered the same issues with getting that thing out a few weeks ago and did report on it.
as for the temps, well, it is a powerful and hot CPU, I have the same, and I got the same result as you did, but than again, my old 3630qm was also a hot cpu. also remember the T junction for these CPUs is 105 C , not the usual 100C, so maybe the bios is set to permit higher temps than other generations of cpus, maybe, I dont know, its just a hypothesis.
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