r5ad.16xlarge
Memory optimized · r5ad series · AMD EPYC 7571
- vCPU
- 64
- Memory
- 512 GiB
- Linux / hour
- $4.19
- Per month
- $3,060
- Per vCPU-hour
- $0.0655
- Per GiB-hour
- $0.00819
Analysis
The r5ad.16xlarge is a memory optimized instance in the r5ad series with 64 vCPUs and 512 GiB of memory on AMD EPYC 7571 (up to 2.5 GHz), which makes it memory-heavy at 8 GiB of memory per vCPU.
Running it in Mumbai instead of São Paulo saves $2,919 a month per instance: $2.66/hour against $6.66/hour, a 150% spread.
Within the same generation and size, the r5a.16xlarge on AMD EPYC 7571 costs $3.62/hour, 14% less ($420 a month). The other variants are the r5.16xlarge at $4.03, the r5d.16xlarge at $4.61 and the r5n.16xlarge at $4.77.
At $4.19/hour on demand in US East (N. Virginia), about $3,060 a month, the r5ad.16xlarge is one of the cheaper ways to buy memory optimized capacity: only 22% of the 385 current memory optimized types cost less per vCPU-hour than its $0.0655.
It has local instance storage (4 x 600 GB NVMe SSD), which is fast but lost when the instance stops. Network: 12 Gigabit.
Looking beyond its own line, 9 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.
It is size 7 of 8 in the r5ad series. Stepping up to the r5ad.24xlarge gives 96 vCPUs and 768 GiB for $1,530 more a month. Dropping to the r5ad.12xlarge saves $765 a month.
Price by region (USD per hour)
| Region | Linux | Windows | 1-yr RI | 3-yr RI | |
|---|---|---|---|---|---|
| N. Virginia us-east-1 | $4.19 | $7.14 | $2.64 | $1.81 | |
| Ohio us-east-2 | $4.19 | $7.14 | $2.64 | $1.81 | |
| Oregon us-west-2 | $4.19 | $7.14 | $2.64 | $1.81 | |
| Canada Central ca-central-1 | $4.61 | $7.55 | $2.90 | $1.99 | |
| São Paulo sa-east-1 | $6.66 | $9.60 | $4.19 | $2.88 | |
| Ireland eu-west-1 | $4.67 | $7.62 | $2.94 | $2.02 | |
| London eu-west-2 | $4.93 | $7.87 | $3.10 | $2.13 | |
| Frankfurt eu-central-1 | $5.06 | $8.00 | $3.19 | $2.18 | |
| Mumbai ap-south-1 | $2.66 | $5.60 | $1.67 | $1.15 | |
| Singapore ap-southeast-1 | $5.09 | $8.03 | $3.19 | $2.20 | |
| Sydney ap-southeast-2 | $5.09 | $8.03 | $3.21 | $2.20 | |
| Tokyo ap-northeast-1 | $5.09 | $8.03 | $3.21 | $2.20 |
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 r5ad.16xlarge |
|---|---|---|---|---|
| r6g.16xlarge AWS Graviton2 Processor | 64 | 512 GiB | $3.23 | -23% |
| r7g.16xlarge AWS Graviton3 Processor | 64 | 512 GiB | $3.43 | -18% |
| r5a.16xlarge AMD EPYC 7571 | 64 | 512 GiB | $3.62 | -14% |
| r6a.16xlarge AMD EPYC 7R13 Processor | 64 | 512 GiB | $3.63 | -13% |
| r6gd.16xlarge AWS Graviton2 Processor | 64 | 512 GiB | $3.69 | -12% |
| r8g.16xlarge AWS Graviton4 Processor | 64 | 512 GiB | $3.77 | -10% |
Cost calculator
Specs
| vCPU | 64 |
|---|---|
| Memory | 512 GiB (8.0 per vCPU) |
| Processor | AMD EPYC 7571 |
| Clock | 2.5 GHz |
| Storage | 4 x 600 NVMe SSD |
| Network | 12 Gigabit |
r5ad sizes
| r5ad.large | 2 vCPU | $0.1310 |
| r5ad.xlarge | 4 vCPU | $0.2620 |
| r5ad.2xlarge | 8 vCPU | $0.5240 |
| r5ad.4xlarge | 16 vCPU | $1.05 |
| r5ad.8xlarge | 32 vCPU | $2.10 |
| r5ad.12xlarge | 48 vCPU | $3.14 |
| r5ad.16xlarge | 64 vCPU | $4.19 |
| r5ad.24xlarge | 96 vCPU | $6.29 |