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The Rpi4B has a Quad-core Cortex-A72 (ARM v8) 64-bit SoC @ 1.5 GHz with 1MB L2 cache. The A72 claims 4.7 DMIPS/MHz.

This board has a Dual-core U74 (RV64GC) 64-bit SoC @ 1.5 GHz with 2MB L2 cache. The U74 claims 2.5 DMIPS/MHz.

So, roughly 1/4 as fast as a RPIi 4B given the roughly half DMIPS/MHz and half the cores?

That, of course, is a really rough guess, ignoring lots of potential variables.

The CPU cores are comparable to the ARM A55, rather than the A72.

It's more MHz and a better uarch than the cores in a Pi 3, so should outperform even the newer Pi 3+ on tasks that don't use NEON and don't use more than 2 cores.

Would this have any sort of meaningful impact on sound/music related processing? E.g I am thinking of vst applications running inside DAWs

On the list of features: "Dedicated Audio Processing DSP and sub-system".

The hardware might be there to do some good audio processing, but how it integrates with the OS is something I'm not experienced with.

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