r6a.16xlarge
Memory optimized · r6a series · AMD EPYC 7R13 Processor
- vCPU
- 64
- Memory
- 512 GiB
- Linux / hour
- $3.63
- Per month
- $2,649
- Per vCPU-hour
- $0.0567
- Per GiB-hour
- $0.00709
Analysis
The r6a.16xlarge is a memory optimized instance in the r6a series with 64 vCPUs and 512 GiB of memory on AMD EPYC 7R13 (up to 3.6 GHz), which makes it memory-heavy at 8 GiB of memory per vCPU.
It costs the same as the older r5a.16xlarge on AMD EPYC 7571, so the move up a generation is free. The newer r7a.16xlarge on AMD EPYC 9R14 is 34% dearer at $4.87/hour.
Running it in Mumbai instead of Frankfurt saves $1,525 a month per instance: $2.29/hour against $4.38/hour, a 91% spread. It is not offered in São Paulo, so plan around that if you need a presence there.
Within the same generation and size, the r6g.16xlarge on AWS Graviton2 costs $3.23/hour, 11% less ($294 a month), though switching means rebuilding software for arm64. The other variants are the r6gd.16xlarge at $3.69, the r6i.16xlarge at $4.03 and the r6id.16xlarge at $4.84.
At $3.63/hour on demand in US East (N. Virginia), about $2,649 a month, the r6a.16xlarge is one of the cheaper ways to buy memory optimized capacity: only 8% of the 385 current memory optimized types cost less per vCPU-hour than its $0.0567.
It is size 7 of 10 in the r6a series. Stepping up to the r6a.24xlarge gives 96 vCPUs and 768 GiB for $1,325 more a month. Dropping to the r6a.12xlarge saves $662 a month.
Price by region (USD per hour)
| Region | Linux | Windows | 1-yr RI | 3-yr RI | |
|---|---|---|---|---|---|
| N. Virginia us-east-1 | $3.63 | $6.57 | $2.40 | $1.65 | |
| Ohio us-east-2 | $3.63 | $6.57 | $2.40 | $1.65 | |
| Oregon us-west-2 | $3.63 | $6.57 | $2.40 | $1.65 | |
| Canada Central ca-central-1 | $3.97 | $6.92 | $2.64 | $1.80 | |
| Ireland eu-west-1 | $4.06 | $7.00 | $2.69 | $1.84 | |
| London eu-west-2 | $4.26 | $7.21 | $2.83 | $1.93 | |
| Frankfurt eu-central-1 | $4.38 | $7.32 | $2.90 | $1.99 | |
| Mumbai ap-south-1 | $2.29 | $5.23 | $1.50 | $1.04 | |
| Singapore ap-southeast-1 | $4.38 | $7.32 | $2.90 | $1.99 | |
| Sydney ap-southeast-2 | $4.35 | $7.29 | $2.87 | $1.98 | |
| Tokyo ap-northeast-1 | $4.38 | $7.32 | $2.90 | $1.99 |
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 r6a.16xlarge |
|---|---|---|---|---|
| r6g.16xlarge AWS Graviton2 Processor | 64 | 512 GiB | $3.23 | -11% |
| r7g.16xlarge AWS Graviton3 Processor | 64 | 512 GiB | $3.43 | -6% |
| r5a.16xlarge AMD EPYC 7571 | 64 | 512 GiB | $3.62 | -0% |
| r6gd.16xlarge AWS Graviton2 Processor | 64 | 512 GiB | $3.69 | +2% |
| r8g.16xlarge AWS Graviton4 Processor | 64 | 512 GiB | $3.77 | +4% |
| r6i.16xlarge Intel Xeon 8375C (Ice Lake) | 64 | 512 GiB | $4.03 | +11% |
Cost calculator
Specs
| vCPU | 64 |
|---|---|
| Memory | 512 GiB (8.0 per vCPU) |
| Processor | AMD EPYC 7R13 Processor |
| Clock | 3.6 GHz |
| Storage | EBS only |
| Network | 25000 Megabit |
r6a sizes
| r6a.large | 2 vCPU | $0.1134 |
| r6a.xlarge | 4 vCPU | $0.2268 |
| r6a.2xlarge | 8 vCPU | $0.4536 |
| r6a.4xlarge | 16 vCPU | $0.9072 |
| r6a.8xlarge | 32 vCPU | $1.81 |
| r6a.12xlarge | 48 vCPU | $2.72 |
| r6a.16xlarge | 64 vCPU | $3.63 |
| r6a.24xlarge | 96 vCPU | $5.44 |
| r6a.32xlarge | 128 vCPU | $7.26 |
| r6a.48xlarge | 192 vCPU | $10.89 |