SVE isn't in a co-processor, I guess is the point. There's a lot more to Fugaku than SVE (whether or not you think that's a version of avx512), though. No DDR is suggestive.
I read, but putting it in a co-processor makes little sense if you care about memory bandwidth and latency -- which you should to keep the vector unit fed. Fujitsu have carefully designed this stuff with such considerations in mind as far as I can tell.