r5b.large
Memory optimized · r5b series · Intel Xeon Platinum 8259 (Cascade Lake)
- vCPU
- 2
- Memory
- 16 GiB
- Linux / hour
- $0.1490
- Per month
- $109
- Per vCPU-hour
- $0.0745
- Per GiB-hour
- $0.00931
Analysis
The r5b.large is a memory optimized instance in the r5b series with 2 vCPUs and 16 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.large on AMD EPYC 7571 costs $0.1130/hour, 24% less ($26.28 a month). The other variants are the r5.large at $0.1260, the r5ad.large at $0.1310 and the r5d.large at $0.1440.
Running it in N. Virginia instead of São Paulo saves $64.24 a month per instance: $0.1490/hour against $0.2370/hour, a 59% spread. It is not offered in Mumbai, so plan around that if you need a presence there.
On demand it costs $0.1490/hour in US East (N. Virginia), $109 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, 17 of 44 current types with 2 vCPUs and similar memory are cheaper. The cheapest of those is the r6g.large on AWS Graviton2 at $0.1008/hour.
It is the smallest of the 8 r5b sizes. Stepping up to the r5b.xlarge gives 4 vCPUs and 32 GiB for $109 more a month.
Price by region (USD per hour)
| Region | Linux | Windows | 1-yr RI | 3-yr RI | |
|---|---|---|---|---|---|
| N. Virginia us-east-1 | $0.1490 | $0.2410 | $0.0939 | $0.0603 | |
| Ohio us-east-2 | $0.1490 | $0.2410 | $0.0939 | $0.0603 | |
| Oregon us-west-2 | $0.1490 | $0.2410 | $0.0939 | $0.0603 | |
| Canada Central ca-central-1 | $0.1630 | $0.2550 | $0.1029 | $0.0632 | |
| São Paulo sa-east-1 | $0.2370 | $0.3290 | $0.1493 | $0.0976 | |
| Ireland eu-west-1 | $0.1670 | $0.2590 | $0.1052 | $0.0685 | |
| London eu-west-2 | $0.1750 | $0.2670 | $0.1108 | $0.0740 | |
| Frankfurt eu-central-1 | $0.1780 | $0.2700 | $0.1121 | $0.0734 | |
| Singapore ap-southeast-1 | $0.1780 | $0.2700 | $0.1121 | $0.0734 | |
| Sydney ap-southeast-2 | $0.1810 | $0.2730 | $0.1140 | $0.0733 | |
| Tokyo ap-northeast-1 | $0.1810 | $0.2730 | $0.1140 | $0.0745 |
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.large |
|---|---|---|---|---|
| r6g.large AWS Graviton2 Processor | 2 | 16 GiB | $0.1008 | -32% |
| r7g.large AWS Graviton3 Processor | 2 | 16 GiB | $0.1071 | -28% |
| r5a.large AMD EPYC 7571 | 2 | 16 GiB | $0.1130 | -24% |
| r6a.large AMD EPYC 7R13 Processor | 2 | 16 GiB | $0.1134 | -24% |
| r6gd.large AWS Graviton2 Processor | 2 | 16 GiB | $0.1152 | -23% |
| r8g.large AWS Graviton4 Processor | 2 | 16 GiB | $0.1178 | -21% |
Cost calculator
Specs
| vCPU | 2 |
|---|---|
| Memory | 16 GiB (8.0 per vCPU) |
| Processor | Intel Xeon Platinum 8259 (Cascade Lake) |
| Clock | 3.1 GHz |
| Storage | EBS only |
| Network | Up to 10 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 |