I have an above-average 6700K, yes. I have an even better 2nd one.
The one used in my board testing has a default voltage of 1.248V. My memory testing CPU has a default of 1.212V.
That sentence was referring to the stability offered by the tool's testing, rather than the CPU clock itself. Some CPUs will be close to the edge, some will not be, since the tool tests in 100 MHz increments with default settings. You are correct that the "ceiling" of some CPUs will be lower than others, and hence that comment. You simply didn't take it in stride, but no big deal. Many users complain about the auto-clocking offered by AI Suite in the past, this tool, with proper settings applied, is much better than past versions. Likely 4.7 was stable..it crashed on 4.8, and then dropped 2 multis. At that point in the review, I am reviewing the auto-clocking abilities of AI suite only.
I do tend to test far more extensively than anyone else has ever reported. Some users use a couple of tools... I use EVERYTHING. All the benchmarks shown in the review, AIDA64 stability testing (both with FPU only and with CPU/Mem/etc), Prime95, F@H, ASUS RealBench, etc, etc, etc.
I also test with a wide variety of memory modules(from 2133 MHz to 3600 MHz currently), and with more than one CPU. More than most reviewers and users for sure. So much so that your doubts in my statements are truly upsetting to me. If I wasn't honest or confident in my methods and results, I'd not even do reviews.
VRM heat is not trapped in the shroud. Never seen it be an issue on any board I have reviewed, but if it was, I'd report about it. Those are the sorts of things I look for (see my MSI Z170 GAMING M7 review mentioning I poke around with my fingers
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