Our builders currently run the following configuration:
amd64
* CPUs: 4
* RAM: 16 GB
* DISK: 80 GB
* SWAP: 4 GB
arm64, riscv64
* CPUs: 8
* RAM: 32 GB
* DISK: 100 GB
* SWAP: 8 GB
s390x
* CPUs: 8
* RAM: 32 GB
* DISK: 100 GB
* SWAP: 0 GB
ppc64el
* CPUs: 4
* RAM: 16 GB
* DISK: 80 GB
* SWAP: 0 GB
Please note that hardware random number generation of the host is used.