m8i-flex.16xlarge
General purpose · m8i-flex series · Intel Xeon Scalable (Granite Rapids)
- vCPU
- 64
- Memory
- 256 GiB
- Linux / hour
- $3.22
- Per month
- $2,349
- Per vCPU-hour
- $0.0503
- Per GiB-hour
- $0.0126
Analysis
The m8i-flex.16xlarge is a general purpose instance in the m8i-flex series with 64 vCPUs and 256 GiB of memory on Intel Xeon Scalable (Granite Rapids) (up to 3.9 GHz), which makes it balanced at 4 GiB of memory per vCPU.
Within the same generation and size, the m8g.16xlarge on AWS Graviton4 costs $2.87/hour, 11% less ($252 a month), though switching means rebuilding software for arm64. The other variants are the m8i.16xlarge at $3.39, the m8gd.16xlarge at $3.69 and the m8a.16xlarge at $3.90.
Running it in N. Virginia instead of São Paulo saves $1,395 a month per instance: $3.22/hour against $5.13/hour, a 59% spread.
On demand it costs $3.22/hour in US East (N. Virginia), $2,349 a month if left running, which puts it mid-table for general purpose types at the 36th percentile per vCPU ($0.0503 per vCPU-hour) and the 36th percentile per GiB ($0.0126 per GiB-hour).
Compared with the previous generation, it costs 5.0% more than the m7i-flex.16xlarge on Intel Xeon Scalable (Sapphire Rapids) ($112 more a month per instance), in exchange for the newer processor.
Looking beyond its own line, 11 of 35 current types with 64 vCPUs and similar memory are cheaper. The cheapest of those is the m6g.16xlarge on AWS Graviton2 at $2.46/hour.
Price by region (USD per hour)
| Region | Linux | Windows | 1-yr RI | 3-yr RI | |
|---|---|---|---|---|---|
| N. Virginia us-east-1 | $3.22 | $6.01 | – | – | |
| Ohio us-east-2 | $3.22 | $6.01 | – | – | |
| Oregon us-west-2 | $3.22 | $6.01 | – | – | |
| Canada Central ca-central-1 | $3.59 | $6.38 | – | – | |
| São Paulo sa-east-1 | $5.13 | $7.92 | – | – | |
| Ireland eu-west-1 | $3.59 | $6.38 | – | – | |
| London eu-west-2 | $3.72 | $6.52 | – | – | |
| Frankfurt eu-central-1 | $3.85 | $6.65 | – | – | |
| Mumbai ap-south-1 | $3.39 | $6.18 | – | – | |
| Singapore ap-southeast-1 | $4.02 | $6.82 | – | – | |
| Sydney ap-southeast-2 | $4.02 | $6.82 | – | – | |
| Tokyo ap-northeast-1 | $4.16 | $6.95 | – | – |
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 m8i-flex.16xlarge |
|---|---|---|---|---|
| m6g.16xlarge AWS Graviton2 Processor | 64 | 256 GiB | $2.46 | -23% |
| m7g.16xlarge AWS Graviton3 Processor | 64 | 256 GiB | $2.61 | -19% |
| m5a.16xlarge AMD EPYC 7571 | 64 | 256 GiB | $2.75 | -14% |
| m6a.16xlarge AMD EPYC 7R13 Processor | 64 | 256 GiB | $2.76 | -14% |
| m8g.16xlarge AWS Graviton4 Processor | 64 | 256 GiB | $2.87 | -11% |
| m6gd.16xlarge AWS Graviton2 Processor | 64 | 256 GiB | $2.89 | -10% |
Cost calculator
Specs
| vCPU | 64 |
|---|---|
| Memory | 256 GiB (4.0 per vCPU) |
| Processor | Intel Xeon Scalable (Granite Rapids) |
| Clock | 3.9 GHz |
| Storage | EBS only |
| Network | Up to 30000 Megabit |
m8i-flex sizes
| m8i-flex.large | 2 vCPU | $0.1006 |
| m8i-flex.xlarge | 4 vCPU | $0.2011 |
| m8i-flex.2xlarge | 8 vCPU | $0.4022 |
| m8i-flex.4xlarge | 16 vCPU | $0.8044 |
| m8i-flex.8xlarge | 32 vCPU | $1.61 |
| m8i-flex.12xlarge | 48 vCPU | $2.41 |
| m8i-flex.16xlarge | 64 vCPU | $3.22 |