It's far from being as definitive as you say. Trying to find with one of the bes...

sudosysgen · on April 23, 2021

Ok, but that's not what I'm talking about. I'm talking about the 5800U@15W.

On Cinebench, the 5800U gets much more than the M1 in multicore and slightly more in single core. It even edges out the M1 on Geekbench, though Gb is a poor benchmark.

my123 · on April 23, 2021

Cinebench is a rendering load that isn’t that much optimised. (Doesn’t even use the newer AVX levels when available, and isn’t properly optimised for Arm either).

Cinema 4D, the program that Cinebench benchmarks, normally does the renders on NVIDIA GPUs, not CPUs. As such, it’s a very poor benchmark.

And those 5800U results are at probably much higher than 15W. (Because that’s the base config, OEMs are free to ship with higher TDPs)

sudosysgen · on April 24, 2021

The examples I took were 15W. The M1 is also ran at much more than 15W in some models.

Geekbench in general has very heavily biased for ARM as it does not run the same code on both. Cinebench doesn't have this issue. And while yes nowadays a lot of rendering is done on GPUs for C4D the class of programs is path-tracers and they are often ran on CPUs for many scenes.

my123 · on April 24, 2021

Geekbench 5 runs the same tests on both platforms, and always did. What you say as heavily based for Arm comes with no evidence.

> The M1 is also ran at much more than 15W in some models.

Nope, it's the same M1 for both, same voltage/frequency curves and top clocks. It's the whole point of having a chip that's named the same. '

No modern laptop CPU has a headline power use number. They all try to use the headroom that they've been given.

Cinebench is very far from being the end-all of benchmarking that you say it is here. And there are far more optimised renderers around if you want to benchmark that. (RTX makes the matter moot nowadays anyway)

It does not use AVX-512, or older AVX levels much for that matter, for a workload that is SIMD-friendly. For Arm, they leave lots of perf on the table too. (Cinebench uses Intel's Embree renderer, with AVX-512 disabled)

Geekbench 5 is designed to be a composite index of multiple benchmarks to be more realistic to some extent than using just one. You can also access to the scores of the subtests too.