r6i.12xlarge
Memory optimized · r6i series · Intel Xeon 8375C (Ice Lake)
- vCPU
- 48
- Memory
- 384 GiB
- Linux / hour
- $3.02
- Per month
- $2,208
- Per vCPU-hour
- $0.0630
- Per GiB-hour
- $0.00788
Analysis
The r6i.12xlarge is a memory optimized instance in the r6i series with 48 vCPUs and 384 GiB of memory on Intel Xeon 8375C (Ice Lake) (up to 3.5 GHz), which makes it memory-heavy at 8 GiB of memory per vCPU.
Within the same generation and size, the r6g.12xlarge on AWS Graviton2 costs $2.42/hour, 20% less ($442 a month), though switching means rebuilding software for arm64. The other variants are the r6a.12xlarge at $2.72, the r6gd.12xlarge at $2.76 and the r6id.12xlarge at $3.63.
At $3.02/hour on demand in US East (N. Virginia), about $2,208 a month, the r6i.12xlarge is one of the cheaper ways to buy memory optimized capacity: only 16% of the 385 current memory optimized types cost less per vCPU-hour than its $0.0630.
Running it in N. Virginia instead of São Paulo saves $1,314 a month per instance: $3.02/hour against $4.82/hour, a 60% spread.
The newer r7i.12xlarge on Intel Xeon Scalable (Sapphire Rapids) is 5.0% dearer at $3.18/hour.
Looking beyond its own line, 6 of 40 current types with 48 vCPUs and similar memory are cheaper. The cheapest of those is the r7g.12xlarge on AWS Graviton3 at $2.57/hour.
It is size 6 of 9 in the r6i series. Stepping up to the r6i.16xlarge gives 64 vCPUs and 512 GiB for $736 more a month. Dropping to the r6i.8xlarge saves $736 a month.
Price by region (USD per hour)
| Region | Linux | Windows | 1-yr RI | 3-yr RI | |
|---|---|---|---|---|---|
| N. Virginia us-east-1 | $3.02 | $5.23 | $2.00 | $1.37 | |
| Ohio us-east-2 | $3.02 | $5.23 | $2.00 | $1.37 | |
| Oregon us-west-2 | $3.02 | $5.23 | $2.00 | $1.37 | |
| Canada Central ca-central-1 | $3.31 | $5.52 | $2.20 | $1.50 | |
| São Paulo sa-east-1 | $4.82 | $7.03 | $3.19 | $2.19 | |
| Ireland eu-west-1 | $3.38 | $5.59 | $2.24 | $1.53 | |
| London eu-west-2 | $3.55 | $5.76 | $2.35 | $1.61 | |
| Frankfurt eu-central-1 | $3.65 | $5.86 | $2.41 | $1.65 | |
| Mumbai ap-south-1 | $3.12 | $5.33 | $2.05 | $1.42 | |
| Singapore ap-southeast-1 | $3.65 | $5.86 | $2.41 | $1.65 | |
| Sydney ap-southeast-2 | $3.62 | $5.83 | $2.39 | $1.65 | |
| Tokyo ap-northeast-1 | $3.65 | $5.86 | $2.41 | $1.65 |
Shared tenancy, no pre-installed software. Reserved rates are standard, no upfront, per hour. Prices as of 2026-11-04.
Same shape, other types
| Type | vCPU | Memory | $/hour | vs r6i.12xlarge |
|---|---|---|---|---|
| r6g.12xlarge AWS Graviton2 Processor | 48 | 384 GiB | $2.42 | -20% |
| r7g.12xlarge AWS Graviton3 Processor | 48 | 384 GiB | $2.57 | -15% |
| r5a.12xlarge AMD EPYC 7571 | 48 | 384 GiB | $2.71 | -10% |
| r6a.12xlarge AMD EPYC 7R13 Processor | 48 | 384 GiB | $2.72 | -10% |
| r6gd.12xlarge AWS Graviton2 Processor | 48 | 384 GiB | $2.76 | -9% |
| r8g.12xlarge AWS Graviton4 Processor | 48 | 384 GiB | $2.83 | -6% |
Cost calculator
Specs
| vCPU | 48 |
|---|---|
| Memory | 384 GiB (8.0 per vCPU) |
| Processor | Intel Xeon 8375C (Ice Lake) |
| Clock | 3.5 GHz |
| Storage | EBS only |
| Network | 18750 Megabit |
r6i sizes
| r6i.large | 2 vCPU | $0.1260 |
| r6i.xlarge | 4 vCPU | $0.2520 |
| r6i.2xlarge | 8 vCPU | $0.5040 |
| r6i.4xlarge | 16 vCPU | $1.01 |
| r6i.8xlarge | 32 vCPU | $2.02 |
| r6i.12xlarge | 48 vCPU | $3.02 |
| r6i.16xlarge | 64 vCPU | $4.03 |
| r6i.24xlarge | 96 vCPU | $6.05 |
| r6i.32xlarge | 128 vCPU | $8.06 |