r5ad.12xlarge
Memory optimized · r5ad series · AMD EPYC 7571
- vCPU
- 48
- Memory
- 384 GiB
- Linux / hour
- $3.14
- Per month
- $2,295
- Per vCPU-hour
- $0.0655
- Per GiB-hour
- $0.00819
Analysis
The r5ad.12xlarge is a memory optimized instance in the r5ad series with 48 vCPUs and 384 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 $2,189 a month per instance: $1.99/hour against $4.99/hour, a 150% spread.
Within the same generation and size, the r5a.12xlarge on AMD EPYC 7571 costs $2.71/hour, 14% less ($315 a month). The other variants are the r5.12xlarge at $3.02, the r5d.12xlarge at $3.46 and the r5n.12xlarge at $3.58.
At $3.14/hour on demand in US East (N. Virginia), about $2,295 a month, the r5ad.12xlarge 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 (2 x 900 GB NVMe SSD), which is fast but lost when the instance stops. Network: 10 Gigabit.
Looking beyond its own line, 9 of 40 current types with 48 vCPUs and similar memory are cheaper. The cheapest of those is the r6g.12xlarge on AWS Graviton2 at $2.42/hour.
It is size 6 of 8 in the r5ad series. Stepping up to the r5ad.16xlarge gives 64 vCPUs and 512 GiB for $765 more a month. Dropping to the r5ad.8xlarge saves $765 a month.
Price by region (USD per hour)
| Region | Linux | Windows | 1-yr RI | 3-yr RI | |
|---|---|---|---|---|---|
| N. Virginia us-east-1 | $3.14 | $5.35 | $1.98 | $1.36 | |
| Ohio us-east-2 | $3.14 | $5.35 | $1.98 | $1.36 | |
| Oregon us-west-2 | $3.14 | $5.35 | $1.98 | $1.36 | |
| Canada Central ca-central-1 | $3.46 | $5.66 | $2.18 | $1.49 | |
| São Paulo sa-east-1 | $4.99 | $7.20 | $3.15 | $2.16 | |
| Ireland eu-west-1 | $3.50 | $5.71 | $2.21 | $1.51 | |
| London eu-west-2 | $3.70 | $5.90 | $2.33 | $1.60 | |
| Frankfurt eu-central-1 | $3.79 | $6.00 | $2.39 | $1.64 | |
| Mumbai ap-south-1 | $1.99 | $4.20 | $1.26 | $0.8610 | |
| Singapore ap-southeast-1 | $3.82 | $6.02 | $2.39 | $1.65 | |
| Sydney ap-southeast-2 | $3.82 | $6.02 | $2.40 | $1.65 | |
| Tokyo ap-northeast-1 | $3.82 | $6.02 | $2.40 | $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 r5ad.12xlarge |
|---|---|---|---|---|
| r6g.12xlarge AWS Graviton2 Processor | 48 | 384 GiB | $2.42 | -23% |
| r7g.12xlarge AWS Graviton3 Processor | 48 | 384 GiB | $2.57 | -18% |
| r5a.12xlarge AMD EPYC 7571 | 48 | 384 GiB | $2.71 | -14% |
| r6a.12xlarge AMD EPYC 7R13 Processor | 48 | 384 GiB | $2.72 | -13% |
| r6gd.12xlarge AWS Graviton2 Processor | 48 | 384 GiB | $2.76 | -12% |
| r8g.12xlarge AWS Graviton4 Processor | 48 | 384 GiB | $2.83 | -10% |
Cost calculator
Specs
| vCPU | 48 |
|---|---|
| Memory | 384 GiB (8.0 per vCPU) |
| Processor | AMD EPYC 7571 |
| Clock | 2.5 GHz |
| Storage | 2 x 900 NVMe SSD |
| Network | 10 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 |