US cheapest spot
N. Virginia
us-east-1
spot · 7-day average $0.0315/hr
on-demand$0.1026
spot interrupt freq 5-10%
c7a.large
4th Gen AMD EPYC processors (Genoa) with a maximum frequency of 3.7 GHz. Compute-optimized instance family built on the AWS Nitro System. Features DDR5 memory (delivering 2.25x more bandwidth than the previous generation), and supports instruction sets like AVX-512, VNNI, and bfloat16. It offers up to 50 Gbps of networking bandwidth and up to 40 Gbps of Amazon EBS bandwidth.
available for self-hosted runners on RunsOn
single-thread · passmark
2,875pts
vcpus
2
2 cores
memory
4 GiB
ram
clock speed
3.7 GHz
max frequency
architecture
x86_64
x64
Measured
1 job of 1 finished in the EC2 CPU sweep, 30 Sep: the values are that job's, so one run decides them. Every job links its log on the open harness.
CPU Mark
5,371
PassMark, both vCPUs
cores of work
1.97
sysbench, 2 threads ÷ 1
sysbench 1 thread
4,221
events per second
7-zip
12,470
MIPS, all threads
| date | suite | single-thread | capacity | job log |
|---|---|---|---|---|
| 30 Sep 2026 | EC2 CPU sweep | 2,875 | on-demand | job log ↗ |
EC2 instance family: c7a
What the family is built for, the silicon underneath, and how to ask RunsOn for it.
c7a compute
cpu type
AMD EPYC 9R14 — 4th Gen AMD EPYC processors (Genoa) with a maximum frequency of 3.7 GHz
architecture
x64 · x86_64
highlights
Compute-optimized instance family built on the AWS Nitro System. Features DDR5 memory (delivering 2.25x more bandwidth than the previous generation), and supports instruction sets like AVX-512, VNNI, and bfloat16. It offers up to 50 Gbps of networking bandwidth and up to 40 Gbps of Amazon EBS bandwidth
released
October 2023
.github/workflows/ci.yml yaml
jobs: build: runs-on: - runs-on=${{ github.run_id }} - family=c7a - cpu=2
the label is a query — each line one constraint, resolved at launch. job labels →
Availability & price by region
Spot is the 7-day average of the cheapest zone's spot price in each region, from the RunsOn finder: an estimate of an hour in your own AWS account, where RunsOn adds no markup. The bar shows how far it runs under on-demand; the badge is AWS's spot-interruption band for the type.
US
Oregon
us-west-2
spot · 7-day average $0.0412/hr
on-demand$0.1026
spot interrupt freq 5-10%
IE
Ireland
eu-west-1
spot · 7-day average $0.0532/hr
on-demand$0.1101
spot interrupt freq 5-10%
DE
Frankfurt
eu-central-1
spot · 7-day average $0.0470/hr
on-demand$0.1171
spot interrupt freq 10-15%
Spot is the cheapest availability zone's spot price at each of the RunsOn finder's fetches (every 90 minutes), averaged over 7 days; on-demand is the Linux list price. Savings compare the two. Prices fetched 8 Oct 2026. The interruption band is AWS Spot Advisor's, fetched 8 Oct 2026.
About these benchmarks
The open benchmark harness launches c7a.large as a RunsOn runner and runs PassMark PerformanceTest (CPU Single
Threaded and CPU Mark), sysbench on one thread and on every thread, and 7-Zip's built-in benchmark. These numbers come from the
EC2 CPU sweep, the suite that measured this type in the most runs; each is the value of its one job of the current
workload definition in the last 75 days.
A type takes a place once it has 3 runs. A type within 5% of the type heading its group shares that place (“joint #2”); a lead under 5% is no lead.
Prices come from the RunsOn finder for the four regions shown; savings compare its 7-day average spot price with the on-demand price. RunsOn launches this type the same way for any job: ephemeral EC2 in your account, one CloudFormation stack. More in the methodology.
Run c7a.large in your own account.
The benchmark runs on the same RunsOn anyone can deploy. One CloudFormation stack, your AWS account, ~10 minutes.