Mobile is the new PC and AArch64 is the new x64

[kinke]

On Tuesday, 13 November 2018 at 17:41:31 UTC, Joakim wrote:
> No, benchmarks show the mobile i7 in last year's MBP as faster 
> than your old desktop core i5, so the iPad Pro is faster than 
> your desktop. :P Of course, the TDP of your desktop i5 is twice 
> the mobile i7 and almost 10 times the A12X in the new iPad Pro, 
> so Apple completely blows away Intel on the 
> performance-to-power-dissipation ratio.

While the last statement may hold some truth, I sure as hell 
don't trust Geekbench numbers. And all ARM/x86 comparisons seem 
to be based on that one little, highly controversial benchmark 
suite.

Their multicore results suggest a Ryzen 1950X outperforms an i7 
7700K by only 50%. A small testsuite of 8 real-world apps (incl. 
raytracing, video encoding, compression) shows a min gain of 80% 
and max gain of 200%, definitely averaging above 100%: 
https://www.computerbase.de/2018-08/amd-ryzen-threadripper-2990wx-2950x-test/2/#diagramm-blender-280
As with any benchmark, your milage may vary, but a dedicated 
multicore score apparently not scaling well at all makes me 
wonder.

Unless someone gives me hard numbers that their phone/tablet can 
compile something like LLVM/LDC in a time anywhere near their 
desktop CPU, I don't waste a second believing that a ~5W CPU can 
match a 65+ W desktop one, even a 5-years old one like mine. 
Laptops would surely already be shipping with these chips if that 
was the case.