The pesky windows 10 update that secretly bundles up micro-code ( KB4100347 ) keeps on installing and somehow downregulating turbo speed (only noticeable in single-core). Without any change to voltage or power, from 4.1Ghz to 3.7Ghz. That is 10perc. single-core performance I do not like being gone. Finally blocked that update from re-installing. Instantly fixed.
I didn't do so previously because I've heard some following update had fixed this behavior but apparently that isn't such case. Also hoped bios update would fix this in meantime. Didn't happen either...MSI.
I am still super-baffled by this. It's Spectre patch, it shouldn't do much to AMD system yet it does ! I hope it doesn't come secretly bundled with another big update next season.
If in some case some you have trouble with turbos, check if KB4100347 isn't installed (as long as you have v1803 edition build).
In other news, for MEG owners, there is another private beta bios, comes with updated AGESA and some users reports stable memory clocks up to 3166 Mhz (with 8x8 sticks though, haven't seen any 4x16/8x16 confirm) so memory compatibility and stableness is improved. I did not try it myself yet.
« Last Edit: 2018-11-08, 13:26:16 by Juraj Talcik »
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