All the benchmarks, sales figures and hardware surveys that don't show AMD in the best of lights are flawed according to their ardent fanboys
It should be on everyone's best interest to have accurate data. Intel buyers too. Steam is not a reliable or accurate metric of gamer's hardware.
This is about mobile CPUs, desktop version aren't expected until 2020. And yes, they will need new motherboards because they're based on a new architecture. (Did Zen work on Bulldozer boards?)
Desktop versions are not expected period. Atleast not on 10nm. Not even on their own roadmaps that were leaked. My guess is that they will skip 10nm on desktop alltogether and go straight to 7nm in 2021-2022 timeframe. And there will be at least two stopgap 14nm++++++ desktop versions based on Comet and Rocket Lake in meantime with no IPC gain.
They will need new motherboards beacuse intel is intel. They always only support two generations on a single socket/chipset. It's a business decision not a technical decision to again go with new motherboards.
Even though this is for the laptop space it still shows the potential improvements that 10nm desktop Intel CPUs will provide. I have been called an AMD fan boy for stating that the R5 3600 is a better buy than any I5. I will say this right now, I fully expect that Intel will release a 10/20 desktop CPU under their new architecture that will be up to 15% faster in all applications than the previous Gen. The mitigating factor of course will be price. In fact given the current market conditions in some ways it is cheaper to build an Intel system vs AMD . The 9900K is $639.99 on Amazon.ca and the 9700K is $499. The AMD 3900x is $699 and the 3800X is $549.99. If things go as planned though AMDs 7++ and 5nm chips should be no joke. If you are into computing this is the best time to be alive.
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Intel's 10 core Comet Lake will still use the same age old Skylake++++++ architecture on 14nm. If they managed to backport Sunny Cove arhitecture to 14nm you bet they would be presenting this as a major selling point. But no. At this point they try to cram every single Mhz out of their old arch and supposedly Comet Lake will go up to 5.2Ghz boost but it will be be hot and consume a lot of power to get there. So basicly +200Mhz and +2 cores and that's it. It may actually do ok against Zen2 in some games or memory latency sensitive applications but it's a losing battle at this point. AMD is not slowing down with their innovations. Unlike Intel they will bring out significant improvements every single year. Forget futureproofing. After 2011 stagnation innovation is picking up again: chiplets, 3d stacking, 3d memory stacking, 4 way SMT, EUV, advanced hardware schedulers, massive L5 caches etc