m8i-flex.m8i-flex.large

Custom Intel Xeon 6 processors with a sustained all-core 3.9 GHz turbo frequency A lower-cost, general-purpose variant designed for workloads that don't continuously use all compute resources. It offers a baseline CPU performance of 40% with the ability to burst up to 100% of CPU performance for 95% of the time over a 24-hour period. It uses the sixth-generation AWS Nitro Cards, providing improved network and EBS bandwidth, and supports bandwidth configuration adjustments. It features a 4.6x larger L3 cache and enhanced accelerators like Advanced Matrix Extensions (AMX)

available for self-hosted runners on RunsOn

cpu speed · passmark single-thread

3,194pts

Intel(R) Xeon(R) 6975P-C (x86_64)
averaged over many days · higher is faster

vcpus

physical threads

memory

7.6 GiB

ram

clock speed

3.9 GHz

max frequency

architecture

x86_64

EC2 instance family: m8i-flex

What the family is built for, the silicon underneath, and how to ask RunsOn for it.

m8i-flex general purpose

cpu type

Intel Xeon Scalable (Granite Rapids) — Custom Intel Xeon 6 processors with a sustained all-core 3.9 GHz turbo frequency

architecture

x86_64 · x86_64

highlights

A lower-cost, general-purpose variant designed for workloads that don't continuously use all compute resources. It offers a baseline CPU performance of 40% with the ability to burst up to 100% of CPU performance for 95% of the time over a 24-hour period. It uses the sixth-generation AWS Nitro Cards, providing improved network and EBS bandwidth, and supports bandwidth configuration adjustments. It features a 4.6x larger L3 cache and enhanced accelerators like Advanced Matrix Extensions (AMX)

released

August 28, 2025

.github/workflows/ci.yml yaml

jobs:
  build:
    runs-on:
      - runs-on=${{ github.run_id }}
      - family=m8i-flex
      - cpu=2

the label is a query — each line one constraint, resolved at launch. job labels →

Availability & price by region

Spot is the average price RunsOn pays in your own AWS account — no per-minute markup. The bar shows how far under on-demand each region runs; the badge is the observed spot-interruption frequency.

N. Virginia

us-east-1

spot · avg $0.0424/hr

on-demand$0.1006

savings vs on-demand23%

spot interrupt freq <5%

Oregon

us-west-2

spot · avg $0.0389/hr

on-demand$0.1006

savings vs on-demand48%

spot interrupt freq <5%

Ireland

eu-west-1

spot · avg $0.0602/hr

on-demand$0.1121

savings vs on-demand37%

spot interrupt freq <5%

Frankfurt

eu-central-1

best spot

spot · avg $0.0509/hr

on-demand$0.1205

savings vs on-demand69%

spot interrupt freq >20%

Spot prices are trailing averages per region and move with the market. On-demand is the list reference. Interrupt frequency is AWS's published spot-advisor band for this instance type.

About these benchmarks

CPU is the Passmark single-thread metric, run on a live m8i-flex.large instance and averaged over many days so a single noisy run can't skew the score.

Pricing is normalized to the hourly rate AWS bills, then shown per region. Spot is the trailing average; savings is measured against the same region's on-demand list price.

This instance is launched the exact same way any RunsOn job launches it — ephemeral EC2 in your account, one CloudFormation stack, nothing to babysit.

metricpassmark · single-thread

samples21 runs

regions4 · us-east-1, us-west-2, eu-west-1, eu-central-1

last updatedSeptember 2, 2026

Run m8i-flex.large in your own account.

The benchmark runs on the same RunsOn anyone can deploy. One CloudFormation stack, your AWS account, ~10 minutes.

self-host → ← all ec2 instances