From: already5chosen@yahoo.com   
      
   On Tue, 30 Dec 2025 22:57:29 GMT   
   scott@slp53.sl.home (Scott Lurndal) wrote:   
      
   > anton@mips.complang.tuwien.ac.at (Anton Ertl) writes:   
   > >Michael S  writes:   
   > >>On Tue, 30 Dec 2025 11:13:37 GMT   
   > >>anton@mips.complang.tuwien.ac.at (Anton Ertl) wrote:   
   > >>   
   > >>> Michael S  writes:   
   > >>> >Do you happen to have benchmarks that compare performance of   
   > >>> >Alpha EV5 vs in-order Cortex-A ?   
   > >>>   
   > >>> LaTeX benchmark results (lower is waster)   
   > >>>   
   > >>> Alpha:   
   > >>> - 21164 600 MHz CPU, 2M L3-Cache, Redhat-Linux (a5)   
   > >>> 8.1 ARM A32/T32:   
   > >>> - Raspberry Pi 3, Cortex A53 1.2GHz Raspbian 8   
   > >>> 5.46 ARM A64:   
   > >>> - Rockpro64 (1416MHz Cortex A53) Debian 9 (Stretch)   
   > >>> 3.24   
   > >>> - Odroid N2 (1896MHz Cortex A53) Ubuntu 18.04   
   > >>> 2.488   
   > >>> - Odroid C2 (1536MHz Cortex A53) Ubuntu 16.04   
   > >>> 2.32   
   > >>> - Rock 5B (1805MHz A55) Debian 11 (texlive-latex-recommended)   
   > >>> 2.105   
   > >>>   
   > >>> A problem with the LaTeX benchmark is that it performance is   
   > >>> significantly influenced by the LaTeX installation (newer versions   
   > >>> need more instructions, and having more packages needs more   
   > >>> instructions).  But it's the only benchmark results I have.   
   > >>>   
   > >>> - anton   
   > >>   
   > >>Thank you.   
   > >>Two 64-bit A53 results about the same as EV5 clock for clock and one   
   > >>result is significantly better.   
   > >>So, either wide in-order is indeed not bright idea or 21164 suffers   
   > >>because of inferioriority of Alpha ISA relatively to ARM64.   
   > >   
   > >Hard to tell from these results.  In addition to the problems   
   > >mentioned above there are also differences in cache configuration to   
   > >consider.  And the A55 does quite a bit better in IPC than the A53,   
   > >although it superficially has the same resources.   
   >   
   > The A5x cores are pretty old now.  Do you have any results for   
   > Neoverse-V2, at say 2Ghz?   
      
      
   We wanted to compare 2-wide in-order core with 2 Integer ALU pipes vs   
   4-wide in-order core also with 2 Integer ALU pipes.   
      
   Of course, modern 4-wide OoO core like one in Neoverse N1 or V2 is   
   massively faster than those, but this fact is not especially   
   illuminating.   
      
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