r8ib.xlarge

Analysis

The r8ib.xlarge is a memory optimized instance in the r8ib series with 4 vCPUs and 32 GiB of memory on Intel Xeon Scalable (Granite Rapids) (up to 3.9 GHz), which makes it memory-heavy at 8 GiB of memory per vCPU.

Within the same generation and size, the r8g.xlarge on AWS Graviton4 costs $0.2356/hour, 44% less ($133 a month), though switching means rebuilding software for arm64. The other variants are the r8i-flex.xlarge at $0.2639, the r8i.xlarge at $0.2778 and the r8gd.xlarge at $0.2939.

Running it in N. Virginia instead of Tokyo saves $65.58 a month per instance: $0.4184/hour against $0.5082/hour, a 21% spread. It is not offered in Canada Central, São Paulo, London, Mumbai, Singapore and Sydney, so plan around that if you need a presence there.

Per vCPU it is one of the dearer memory optimized types: 79% of the 385 current types in the family cost less than its $0.1046 per vCPU-hour. The premium mostly pays for the extra memory per vCPU. On demand it is $0.4184/hour in US East (N. Virginia), or $305 for a 730-hour month.

Looking beyond its own line, 36 of 45 current types with 4 vCPUs and similar memory are cheaper. The cheapest of those is the r6g.xlarge on AWS Graviton2 at $0.2016/hour.