The SpacemiT K3 with 8 SpacemiT X100 RVA23 cores, which are faster than Pi4 but slower than Pi5, should be available in a couple of months:

geekbench: https://browser.geekbench.com/v6/cpu/16145076

rvv-bench: https://camel-cdr.github.io/rvv-bench-results/spacemit_x100/...

There are also 8 additional SpacemiT-A100 cores with 1024-bit wide vectors, which are more like an additional accelerator for number crunshing.

The Milk-V Titan has slightly faster scalar performance, than the K3.

> The Milk-V Titan has slightly faster scalar performance, than the K3.

So the main difference between this Milk-V Titan and the upcoming SpacemiT K3 is that the latter has better vector performance?