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z1d.large by Amazon Web Services

z1d.large is a High frequency [Instance store volumes] Gen1 large server offered by Amazon Web Services with 2 vCPUs, 16 GiB of memory and 75 GB of storage. The pricing starts at 0.0299 USD per hour.
2 vCPU
16 GiB Memory
75 GB Storage
Spare SCore
2165
(All-cores)
1648
(Single-core)

Specifications

Server Metadata

Vendor ID
aws
Name
z1d.large
Description
High frequency [Instance store volumes] Gen1 large
Family
z1d
Hw Virt
Status
active
Observed At
2026-08-12T09:13:52.185632

Availability

REGION / IDSPOTONDEMAND
Oregon (US) / us-west-2
0.0391 USD/h 0.186 USD/h
Ohio (US) / us-east-2
0.0406 USD/h 0.186 USD/h
Northern Virgina (US) / us-east-1
0.05142 USD/h 0.186 USD/h
Mumbai (IN) / ap-south-1
0.0313 USD/h 0.196 USD/h
Dublin (IE) / eu-west-1
0.064933 USD/h 0.208 USD/h
California (US) / us-west-1
0.0466 USD/h 0.211 USD/h
London (GB) / eu-west-2
0.0528 USD/h 0.22 USD/h
Seoul (KR) / ap-northeast-2
0.0509 USD/h 0.225 USD/h
Frankfurt (DE) / eu-central-1
0.0853 USD/h 0.225 USD/h
Singapore (SG) / ap-southeast-1
0.0726 USD/h 0.226 USD/h
Sydney (AU) / ap-southeast-2
0.067367 USD/h 0.226 USD/h
Tokyo (JP) / ap-northeast-1
0.048867 USD/h 0.227 USD/h

Processor

vCPUs
2
Hypervisor
nitro
CPU Allocation
Dedicated
CPU Cores
1
CPU Speed
4 GHz
CPU Architecture
x86_64
CPU Manufacturer
Intel
CPU Family
Xeon
CPU Model
8151
CPU L1D Cache
32 KiB
CPU L1D Cache Total
32 KiB
CPU L1I Cache
32 KiB
CPU L1I Cache Total
32 KiB
CPU L2 Cache
1 MiB
CPU L2 Cache Total
1 MiB
CPU L3 Cache
25 MiB
CPU L3 Cache Total
25 MiB
CPU Flags
fpu, vme, de, pse, tsc, msr, pae, mce, cx8, apic, sep, mtrr, pge, mca, cmov, pat, pse36, clflush, mmx, fxsr, sse, sse2, ss, ht, syscall, nx, pdpe1gb, rdtscp, lm, constant_tsc, rep_good, nopl, xtopology, nonstop_tsc, cpuid, aperfmperf, tsc_known_freq, pni, pclmulqdq, ssse3, fma, cx16, pcid, sse4_1, sse4_2, x2apic, movbe, popcnt, tsc_deadline_timer, aes, xsave, avx, f16c, rdrand, hypervisor, lahf_lm, abm, 3dnowprefetch, pti, fsgsbase, tsc_adjust, bmi1, avx2, smep, bmi2, erms, invpcid, mpx, avx512f, avx512dq, rdseed, adx, smap, clflushopt, clwb, avx512cd, avx512bw, avx512vl, xsaveopt, xsavec, xgetbv1, xsaves, ida, arat, pku, ospke
Ecpus
1.3
Scalability
130

System Resources and Accelerators

MEMORY
Memory Amount
16 GiB
Memory Amount Actual
16 GiB
Memory Generation
DDR4
Memory Speed
2666 Mhz
GPU
GPU Count
0
GPU Memory Min
0 MiB
GPU Memory Total
0 MiB
GPUs
    STORAGE
    Storage Size
    75 GB
    Storage Type
    nvme ssd
    Storages
    • 75 GB nvme ssd
    NETWORK
    Network Speed Baseline
    0.75 Gbps
    Network Speed Max
    10 Gbps
    Network Storage Speed Baseline
    0.8 Gbps
    Network Storage Speed Max
    3.17 Gbps
    Inbound Traffic
    0 GB/month
    Outbound Traffic
    0 GB/month
    IPv4
    0

    Server Description

    A high-frequency, single-core optimized instance featuring dedicated compute resources and local NVMe SSD storage for single-threaded workloads.

    Memory OptimizedStorage & DatabaseCompute Optimized

    Amazon Web Services z1d.large is a memory-optimized instance powered by a high-frequency 4.0 GHz Intel Xeon 8151 processor. Operating on the Nitro hypervisor, it provides 2 vCPUs from a single physical core, 16.0 GB of DDR4 memory, and a 75 GB NVMe SSD local instance store with a baseline network speed of 1 Gbps. While its high clock speed delivers average single-core performance in stress-ng and Geekbench, its low core count results in poor multi-core scaling and memory bandwidth. This instance is qualitatively cost-effective for workloads that require high single-threaded compute and fast local storage but do not scale across multiple cores, such as small database operations, single-threaded processing tasks, and basic web serving.

    Economics

    Average Price per Region

    Prices per Zone

    Lowest Prices

    Performance

    Workload Profiles

    0.185Score
    Precomputed compound score for Cache Intensive workloads. A weighted average (geometric mean) of benchmark scores compared to their medians: score = ∏ (x_i / m_i)^(w_i / Σw). The score of 1.0 represents a synthetic baseline server with the median performance of each component benchmark; 0.5 means roughly half the performance; and 2.0 means twice the performance of that reference profile. Component weights: 50% Redis RPS (pipeline=1, SET), 20% Redis RPS (pipeline=16, SET), 10% PassMark Memory Mark (composite), 10% Memory bandwidth (read, 16 MB ~ L3), 10% PassMark single-thread CPU. Rationale for component selection: In-memory key-value store workload, mixing direct Redis performance metrics with memory speed and latency benchmarks, and single-core CPU performance profiles.
    Component Score Weight Impact
    Raw Reference Normalized Target Actual
    Redis RPS (pipeline=1, SET) 224,904 ops/sec 1,910,660 ops/sec 0.118 50.00% 50.00% -65.60%
    Redis RPS (pipeline=16, SET) 1,419,597 ops/sec 11,608,287 ops/sec 0.122 20.00% 20.00% -34.30%
    PassMark Memory Mark (composite) 1,803 2,416 0.746 10.00% 10.00% -2.89%
    Memory bandwidth (read, 16 MB ~ L3) 20,668 MB/sec 107,896 MB/sec 0.192 10.00% 10.00% -15.20%
    PassMark single-thread CPU 2,277 Mops/s 2,364 Mops/s 0.963 10.00% 10.00% -0.38%

    Memory Bandwidth

    Compression

    OpenSSL

    Geekbench Single-Core

    Score: 1,287

    Geekbench Multi-Core

    Score: 1,543

    Passmark CPU Scores

    BENCHMARKSCORE
    Mark
    		 2581
    Compression
    		 32269
    Encryption
    		 995
    Extended Instructions
    		 1884
    Floating Point Maths
    		 3894
    Integer Maths
    		 7253
    Physics
    		 321
    Prime Numbers
    		 16
    Single Threaded
    		 2277
    String Sorting
    		 3813

    Passmark Memory Scores

    BENCHMARKSCORE
    Memory Mark
    		 1803
    Database Operations
    		 800
    Memory Latency
    		 53
    Memory Read Cached
    		 27773
    Memory Read Uncached
    		 11518
    Memory Write
    		 10515

    Stress-ng Raw Scores

    Stress-ng Relative Multicore Performance

    LLM Inference Speed for Prompt Processing

    LLM Inference Speed for Text Generation

    Static Web Server

    Redis

    Alternatives

    Servers of the Same Family

    INSTANCEvCPUsMEMORYGPUs
    z1d.xlarge 432 GiB0
    z1d.2xlarge 864 GiB0
    z1d.3xlarge 1296 GiB0
    z1d.6xlarge 24192 GiB0
    z1d.12xlarge 48384 GiB0
    z1d.metal 48384 GiB0

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    z1d.large FAQs