Building GrapheneOS and Vanadium on both a Ryzen 9 5950X and i7-6950X at the same time is a nice improvement.
Clean builds on Ryzen 9 5950X are a bit over 2x faster. It's not quite that much faster for most incremental builds, but it's still substantial, even for small changes.
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Going to be making a 64 core Threadripper build when Zen 3 Threadripper is finally available and retiring poor old i7-6950X.
i7-6950X was an amazing CPU in 2016 but took a huge hit from Spectre/Meltdown microcode updates. Runs hotter too... but might just need new thermal paste.
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i7-6950X has mostly been running at 4.5GHz. It uses about 30% less power at 4GHz and matches the 135W used by the Ryzen 9 5950X during builds. 12.5% better performance is still worth it.
I think the microcode/kernel updates have increased build times at least 20% and maybe more.
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I'm going to miss this awesome microATX motherboard:
evga.com/articles/00941
Had to move to regular ATX this time around (ASUS PRIME X570-PRO) since the available microATX options are terrible. Somehow EVGA had USB-C fast charging working in 2016 and ASUS doesn't in 2021. Nice.
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A clean build of the entire OS for the Pixel 5 takes about 40 minutes on the Ryzen 9 5950X. The vast majority of development builds are incremental builds taking a couple minutes.
Signing a production release also adds a bit more time but doesn't depend on the build directory.
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