The R8i comes in variants from two to 384 vCPUs. Intel offers many Xeon 6 variants with 96 cores, which we mention as AWS counts a vCPU as one thread on an x86 processor. A single 96-core CPU therefore offers 192 EC2 vCPUs, and a two socket-server provides 384 - matching the mightiest of the R8* instance types. The instances also allow users to vary bandwidth configuration so it's allocated differently between network access and connections to Amazon's elastic block store. Doing so can apparently improve database performance.