r8i.large

Custom Intel Xeon 6 processors, available exclusively on AWS Memory-optimized instance, designed for high performance and fast memory bandwidth. Supports a sustained all-core turbo frequency of 3.9 GHz and high-speed 7200 MT/s DDR5 memory. Scales up to 384 vCPUs and 3 TiB of memory. SAP-certified with 142,100 aSAPS

available for self-hosted runners on RunsOn

cpu speed · passmark single-thread

3,190pts

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

vcpus

physical threads

memory

15.3 GiB

ram

clock speed

3.9 GHz

max frequency

architecture

x86_64

EC2 instance family: r8i

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

r8i memory optimized

cpu type

Intel Xeon Scalable (Granite Rapids) — Custom Intel Xeon 6 processors, available exclusively on AWS

architecture

x86_64 · x86_64

highlights

Memory-optimized instance, designed for high performance and fast memory bandwidth. Supports a sustained all-core turbo frequency of 3.9 GHz and high-speed 7200 MT/s DDR5 memory. Scales up to 384 vCPUs and 3 TiB of memory. SAP-certified with 142,100 aSAPS

released

Generally available in mid-August 2025

.github/workflows/ci.yml yaml

jobs:
  build:
    runs-on:
      - runs-on=${{ github.run_id }}
      - family=r8i
      - 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

best spot

spot · avg $0.0466/hr

on-demand$0.1389

savings vs on-demand63%

spot interrupt freq >20%

Oregon

us-west-2

spot · avg $0.0566/hr

on-demand$0.1389

savings vs on-demand55%

spot interrupt freq 10-15%

Ireland

eu-west-1

spot · avg $0.0686/hr

on-demand$0.1555

savings vs on-demand55%

spot interrupt freq <5%

Frankfurt

eu-central-1

spot · avg $0.0640/hr

on-demand$0.1676

savings vs on-demand57%

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 r8i.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 updatedAugust 2, 2026

Run r8i.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