Wait for DDR 5, or build a DDR 4 4000 Mhz system?

Yeah, but they had to scrap a lot of their plans to be fair.
2015: 14nm Skylake
2016: 14nm
2017: 14nm
2018: 10nm nope, 14nm
2019: Still 14nm. Some 10nm laptop CPUs
2021: 14nm, on Rocket Lake. + hint at 10nm desktop a bit more
 
small_intel-h-series-summary.jpg


When you look at how Tiger Lake H45 mobile CPUs have been marketed, e.g. "Mobile processor with Desktop Caliber Performance", it does make you wonder why Intel doesn't release desktop versions of Tiger Lake this year...

Unless, they can't produce many 10nm Tiger Lake chips due to capacity issues.
 
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Comparing two 5.0ghz (turbo) CPUs, one from the 10nm Tiger Lake series, and the other from the 14nm Comet Lake series, there appears to be around a 33% increase in single core overclocked speed for the Tiger Lake CPU.

Link here:
https://cpu.userbenchmark.com/Compa...5H-vs-Intel-Core-i7-10870H/m1462657vsm1322918

There's some differences in L3 Cache (and different core count), so it's not a perfect comparison, but it does show that there's a significant performance difference.
 
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