US cheapest spot
N. Virginia
us-east-1
spot · 7-day average $0.0414/hr
on-demand$0.1860
spot interrupt freq >20%
z1d.large
Custom Intel® Xeon® Scalable processor (Skylake 8151). Delivers a sustained all-core frequency of up to 4.0 GHz, the highest available in the cloud at its release, making it a frequency-optimized instance. It features a high memory to vCPU ratio (1:8) and includes up to 1.8 TB of local NVMe SSD instance storage. The instance is built on the AWS Nitro System. It is ideal for workloads requiring high single-thread performance, such as Electronic Design Automation (EDA) and certain relational database applications with high per-core licensing costs.
available for self-hosted runners on RunsOn
single-thread · passmark
2,286pts
vcpus
2
1 core × 2 threads
memory
16 GiB
ram
clock speed
4 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
2,609
PassMark, both vCPUs
cores of work
1.55
sysbench, 2 threads ÷ 1
sysbench 1 thread
1,362
events per second
7-zip
7,342
MIPS, all threads
| date | suite | single-thread | capacity | job log |
|---|---|---|---|---|
| 30 Sep 2026 | EC2 CPU sweep | 2,286 | on-demand | job log ↗ |
EC2 instance family: z1d
What the family is built for, the silicon underneath, and how to ask RunsOn for it.
z1d high frequency
cpu type
Intel Xeon Platinum 8151 — Custom Intel® Xeon® Scalable processor (Skylake 8151)
architecture
x64 · x86_64
highlights
Delivers a sustained all-core frequency of up to 4.0 GHz, the highest available in the cloud at its release, making it a frequency-optimized instance. It features a high memory to vCPU ratio (1:8) and includes up to 1.8 TB of local NVMe SSD instance storage. The instance is built on the AWS Nitro System. It is ideal for workloads requiring high single-thread performance, such as Electronic Design Automation (EDA) and certain relational database applications with high per-core licensing costs
released
July 2018
Deprecated: No
.github/workflows/ci.yml yaml
jobs: build: runs-on: - runs-on=${{ github.run_id }} - family=z1d - 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 $0.0492/hr
on-demand$0.1860
spot interrupt freq >20%
IE
Ireland
eu-west-1
spot · 7-day average $0.0585/hr
on-demand$0.2080
spot interrupt freq >20%
DE
Frankfurt
eu-central-1
spot · 7-day average $0.0764/hr
on-demand$0.2250
spot interrupt freq >20%
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 5 Oct 2026. The interruption band is AWS Spot Advisor's, fetched 5 Oct 2026.
About these benchmarks
The open benchmark harness launches z1d.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 z1d.large in your own account.
The benchmark runs on the same RunsOn anyone can deploy. One CloudFormation stack, your AWS account, ~10 minutes.