c6a.large

** 3rd generation AMD EPYC processors (code named Milan). ** ** Compute-optimized instance built on the AWS Nitro System, featuring an all-core turbo frequency of up to 3.6 GHz. It provides up to 50 Gbps of networking speed, up to 40 Gbps of bandwidth to Amazon Elastic Block Store (EBS), and includes always-on memory encryption with AMD Transparent Single Key Memory Encryption (TSME). **

available for self-hosted runners on RunsOn

cpu speed · passmark single-thread

2,579pts

AMD EPYC 7R13 Processor (x86_64)
averaged over many days · higher is faster

vcpus

physical threads

memory

3.7 GiB

ram

clock speed

3.6 GHz

max frequency

architecture

x86_64

EC2 instance family: c6a

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

c6a compute optimized

cpu type

AMD EPYC 7R13 Processor — ** 3rd generation AMD EPYC processors (code named Milan). **

architecture

x86_64 · x86_64

highlights

** Compute-optimized instance built on the AWS Nitro System, featuring an all-core turbo frequency of up to 3.6 GHz. It provides up to 50 Gbps of networking speed, up to 40 Gbps of bandwidth to Amazon Elastic Block Store (EBS), and includes always-on memory encryption with AMD Transparent Single Key Memory Encryption (TSME). **

released

** February 14, 2022

.github/workflows/ci.yml yaml

jobs:
  build:
    runs-on:
      - runs-on=${{ github.run_id }}
      - family=c6a
      - 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 $0.0286/hr

on-demand$0.0765

savings vs on-demand59%

spot interrupt freq 5-10%

Oregon

us-west-2

best spot

spot · avg $0.0284/hr

on-demand$0.0765

savings vs on-demand65%

spot interrupt freq 10-15%

Ireland

eu-west-1

spot · avg $0.0383/hr

on-demand$0.0821

savings vs on-demand47%

spot interrupt freq 10-15%

Frankfurt

eu-central-1

spot · avg $0.0397/hr

on-demand$0.0873

savings vs on-demand51%

spot interrupt freq <5%

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 c6a.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 updatedJuly 1, 2026

Run c6a.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