r5b.24xlarge
Memory optimized · r5b series · Intel Xeon Platinum 8259 (Cascade Lake)
- vCPU
- 96
- Memory
- 768 GiB
- Linux / hour
- $7.15
- Per month
- $5,221
- Per vCPU-hour
- $0.0745
- Per GiB-hour
- $0.00931
Analysis
The r5b.24xlarge is a memory optimized instance in the r5b series with 96 vCPUs and 768 GiB of memory on Intel Xeon Platinum 8259 (Cascade Lake) (up to 3.1 GHz), which makes it memory-heavy at 8 GiB of memory per vCPU.
Within the same generation and size, the r5a.24xlarge on AMD EPYC 7571 costs $5.42/hour, 24% less ($1,261 a month). The other variants are the r5.24xlarge at $6.05, the r5ad.24xlarge at $6.29 and the r5d.24xlarge at $6.91.
Running it in N. Virginia instead of São Paulo saves $3,084 a month per instance: $7.15/hour against $11.38/hour, a 59% spread. It is not offered in Mumbai, so plan around that if you need a presence there.
On demand it costs $7.15/hour in US East (N. Virginia), $5,221 a month if left running, which puts it mid-table for memory optimized types at the 40th percentile per vCPU ($0.0745 per vCPU-hour) and the 56th percentile per GiB ($0.00931 per GiB-hour).
Looking beyond its own line, 11 of 35 current types with 96 vCPUs and similar memory are cheaper. The cheapest of those is the r6a.24xlarge on AMD EPYC 7R13 at $5.44/hour.
It is the largest of the 8 r5b sizes. Dropping to the r5b.16xlarge saves $1,740 a month.
Price by region (USD per hour)
| Region | Linux | Windows | 1-yr RI | 3-yr RI | |
|---|---|---|---|---|---|
| N. Virginia us-east-1 | $7.15 | $11.57 | $4.51 | $2.90 | |
| Ohio us-east-2 | $7.15 | $11.57 | $4.51 | $2.90 | |
| Oregon us-west-2 | $7.15 | $11.57 | $4.51 | $2.90 | |
| Canada Central ca-central-1 | $7.82 | $12.24 | $4.94 | $3.03 | |
| São Paulo sa-east-1 | $11.38 | $15.79 | $7.17 | $4.69 | |
| Ireland eu-west-1 | $8.02 | $12.43 | $5.05 | $3.29 | |
| London eu-west-2 | $8.40 | $12.82 | $5.32 | $3.55 | |
| Frankfurt eu-central-1 | $8.54 | $12.96 | $5.38 | $3.52 | |
| Singapore ap-southeast-1 | $8.54 | $12.96 | $5.38 | $3.52 | |
| Sydney ap-southeast-2 | $8.69 | $13.10 | $5.47 | $3.52 | |
| Tokyo ap-northeast-1 | $8.69 | $13.10 | $5.47 | $3.57 |
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 r5b.24xlarge |
|---|---|---|---|---|
| r5a.24xlarge AMD EPYC 7571 | 96 | 768 GiB | $5.42 | -24% |
| r6a.24xlarge AMD EPYC 7R13 Processor | 96 | 768 GiB | $5.44 | -24% |
| r8g.24xlarge AWS Graviton4 Processor | 96 | 768 GiB | $5.66 | -21% |
| r6i.24xlarge Intel Xeon 8375C (Ice Lake) | 96 | 768 GiB | $6.05 | -15% |
| r5.24xlarge Intel Xeon Platinum 8175 | 96 | 768 GiB | $6.05 | -15% |
| r9g.24xlarge AWS Graviton5 Processor | 96 | 768 GiB | $6.16 | -14% |
Cost calculator
Specs
| vCPU | 96 |
|---|---|
| Memory | 768 GiB (8.0 per vCPU) |
| Processor | Intel Xeon Platinum 8259 (Cascade Lake) |
| Clock | 3.1 GHz |
| Storage | EBS only |
| Network | 25 Gigabit |
r5b sizes
| r5b.large | 2 vCPU | $0.1490 |
| r5b.xlarge | 4 vCPU | $0.2980 |
| r5b.2xlarge | 8 vCPU | $0.5960 |
| r5b.4xlarge | 16 vCPU | $1.19 |
| r5b.8xlarge | 32 vCPU | $2.38 |
| r5b.12xlarge | 48 vCPU | $3.58 |
| r5b.16xlarge | 64 vCPU | $4.77 |
| r5b.24xlarge | 96 vCPU | $7.15 |