r8g.16xlarge
Memory optimized · r8g series · AWS Graviton4 Processor
- vCPU
- 64
- Memory
- 512 GiB
- Linux / hour
- $3.77
- Per month
- $2,752
- Per vCPU-hour
- $0.0589
- Per GiB-hour
- $0.00736
Analysis
The r8g.16xlarge is a memory optimized instance in the r8g series with 64 vCPUs and 512 GiB of memory on AWS Graviton4 (up to 2.7 GHz), which makes it memory-heavy at 8 GiB of memory per vCPU.
Running it in Mumbai instead of São Paulo saves $2,450 a month per instance: $2.64/hour against $6.00/hour, a 127% spread.
It is the cheapest of the 5 processor variants AWS sells at this size and generation. The r8a.16xlarge on AMD EPYC 9R45 costs 36% more, and the r8i-flex.16xlarge, the r8i.16xlarge and the r8gd.16xlarge also sit above it.
At $3.77/hour on demand in US East (N. Virginia), about $2,752 a month, the r8g.16xlarge is one of the cheaper ways to buy memory optimized capacity: only 12% of the 385 current memory optimized types cost less per vCPU-hour than its $0.0589.
Compared with the previous generation, it costs 10% more than the r7g.16xlarge on AWS Graviton3 ($250 more a month per instance), in exchange for the newer processor. The newer r9g.16xlarge on AWS Graviton5 is 9.0% dearer at $4.11/hour.
Looking beyond its own line, 5 of 39 current types with 64 vCPUs and similar memory are cheaper. The cheapest of those is the r6g.16xlarge on AWS Graviton2 at $3.23/hour.
Price by region (USD per hour)
| Region | Linux | Windows | 1-yr RI | 3-yr RI | |
|---|---|---|---|---|---|
| N. Virginia us-east-1 | $3.77 | – | $2.49 | $1.71 | |
| Ohio us-east-2 | $3.77 | – | $2.49 | $1.71 | |
| Oregon us-west-2 | $3.77 | – | $2.49 | $1.71 | |
| Canada Central ca-central-1 | $4.13 | – | $2.74 | $1.87 | |
| São Paulo sa-east-1 | $6.00 | – | $3.98 | $2.73 | |
| Ireland eu-west-1 | $4.22 | – | $2.79 | $1.91 | |
| London eu-west-2 | $4.43 | – | $2.94 | $2.00 | |
| Frankfurt eu-central-1 | $4.55 | – | $3.01 | $2.06 | |
| Mumbai ap-south-1 | $2.64 | – | $1.74 | $1.20 | |
| Singapore ap-southeast-1 | $4.55 | – | $3.01 | $2.06 | |
| Sydney ap-southeast-2 | $4.52 | – | $2.99 | $2.05 | |
| Tokyo ap-northeast-1 | $4.55 | – | $3.01 | $2.06 |
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 r8g.16xlarge |
|---|---|---|---|---|
| r6g.16xlarge AWS Graviton2 Processor | 64 | 512 GiB | $3.23 | -14% |
| r7g.16xlarge AWS Graviton3 Processor | 64 | 512 GiB | $3.43 | -9% |
| r5a.16xlarge AMD EPYC 7571 | 64 | 512 GiB | $3.62 | -4% |
| r6a.16xlarge AMD EPYC 7R13 Processor | 64 | 512 GiB | $3.63 | -4% |
| r6gd.16xlarge AWS Graviton2 Processor | 64 | 512 GiB | $3.69 | -2% |
| r6i.16xlarge Intel Xeon 8375C (Ice Lake) | 64 | 512 GiB | $4.03 | +7% |
Cost calculator
Specs
| vCPU | 64 |
|---|---|
| Memory | 512 GiB (8.0 per vCPU) |
| Processor | AWS Graviton4 Processor |
| Clock | 2.7 GHz |
| Storage | EBS only |
| Network | 30 Gigabit |
r8g sizes
| r8g.medium | 1 vCPU | $0.0589 |
| r8g.large | 2 vCPU | $0.1178 |
| r8g.xlarge | 4 vCPU | $0.2356 |
| r8g.2xlarge | 8 vCPU | $0.4713 |
| r8g.4xlarge | 16 vCPU | $0.9426 |
| r8g.8xlarge | 32 vCPU | $1.89 |
| r8g.12xlarge | 48 vCPU | $2.83 |
| r8g.16xlarge | 64 vCPU | $3.77 |
| r8g.24xlarge | 96 vCPU | $5.66 |
| r8g.48xlarge | 192 vCPU | $11.31 |