 Later variants of the SV1, the SV1e and SV1ex, ran at 500 MHz, the latter also having faster memory and support for the SSD-I Solid-State Storage Device.Systems could include up to 32 processors with up to 512 shared memory buses.Multiple SV1 cabinets could be clustered together using the GigaRing I/O channel, which also provided connection to HIPPI, FDDI, ATM, Ethernet and SCSI devices for network, disk, and tape services.