Supercomputer to crash hash
The number of NVIDIA TESLA V100 in the Summit supercomputer is documented, and it's reasonable to assume that most of its hashcat performance for SHA-1 would come from that: according  to this source on the Power9 CPU ISA, there is no SHA-1 instructions for the Power CPUs, and then these benchmarks give an order of magnitude on other CPUs.

Isn't that enough for answering the question?

Caveat: a truly powerful specialized SHA-1 cracker would use ASICs, like bitcoin miners do, for even more performance.