r5b.2xlarge
Memory optimized · r5b series · Intel Xeon Platinum 8259 (Cascade Lake)
- vCPU
- 8
- Memory
- 64 GiB
- Linux / hour
- $0.5960
- Per month
- $435
- Per vCPU-hour
- $0.0745
- Per GiB-hour
- $0.00931
Analysis
The r5b.2xlarge is a memory optimized instance in the r5b series with 8 vCPUs and 64 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.2xlarge on AMD EPYC 7571 costs $0.4520/hour, 24% less ($105 a month). The other variants are the r5.2xlarge at $0.5040, the r5ad.2xlarge at $0.5240 and the r5d.2xlarge at $0.5760.
Running it in N. Virginia instead of São Paulo saves $257 a month per instance: $0.5960/hour against $0.9480/hour, a 59% spread. It is not offered in Mumbai, so plan around that if you need a presence there.
On demand it costs $0.5960/hour in US East (N. Virginia), $435 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 45 current types with 8 vCPUs and similar memory are cheaper. The cheapest of those is the r6g.2xlarge on AWS Graviton2 at $0.4032/hour.
It is size 3 of 8 in the r5b series. Stepping up to the r5b.4xlarge gives 16 vCPUs and 128 GiB for $435 more a month. Dropping to the r5b.xlarge saves $218 a month.
Price by region (USD per hour)
| Region | Linux | Windows | 1-yr RI | 3-yr RI | |
|---|---|---|---|---|---|
| N. Virginia us-east-1 | $0.5960 | $0.9640 | $0.3755 | $0.2414 | |
| Ohio us-east-2 | $0.5960 | $0.9640 | $0.3755 | $0.2414 | |
| Oregon us-west-2 | $0.5960 | $0.9640 | $0.3755 | $0.2414 | |
| Canada Central ca-central-1 | $0.6520 | $1.02 | $0.4116 | $0.2527 | |
| São Paulo sa-east-1 | $0.9480 | $1.32 | $0.5972 | $0.3905 | |
| Ireland eu-west-1 | $0.6680 | $1.04 | $0.4208 | $0.2741 | |
| London eu-west-2 | $0.7000 | $1.07 | $0.4431 | $0.2959 | |
| Frankfurt eu-central-1 | $0.7120 | $1.08 | $0.4486 | $0.2937 | |
| Singapore ap-southeast-1 | $0.7120 | $1.08 | $0.4486 | $0.2937 | |
| Sydney ap-southeast-2 | $0.7240 | $1.09 | $0.4561 | $0.2932 | |
| Tokyo ap-northeast-1 | $0.7240 | $1.09 | $0.4561 | $0.2979 |
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.2xlarge |
|---|---|---|---|---|
| r6g.2xlarge AWS Graviton2 Processor | 8 | 64 GiB | $0.4032 | -32% |
| r7g.2xlarge AWS Graviton3 Processor | 8 | 64 GiB | $0.4284 | -28% |
| r5a.2xlarge AMD EPYC 7571 | 8 | 64 GiB | $0.4520 | -24% |
| r6a.2xlarge AMD EPYC 7R13 Processor | 8 | 64 GiB | $0.4536 | -24% |
| r6gd.2xlarge AWS Graviton2 Processor | 8 | 64 GiB | $0.4608 | -23% |
| r8g.2xlarge AWS Graviton4 Processor | 8 | 64 GiB | $0.4713 | -21% |
Cost calculator
Specs
| vCPU | 8 |
|---|---|
| Memory | 64 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 |