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E20a_v4 by Microsoft Azure

E20a_v4 is a EAv4 family [AMD processor] 20 vCPUs server offered by Microsoft Azure with 20 vCPUs, 160 GiB of memory and 512 GB of storage. The pricing starts at 0.1368 USD per hour.
20 vCPU
160 GiB Memory
512 GB Storage
Spare SCore
7696
(All-cores)
767
(Single-core)

Specifications

Server Metadata

Vendor ID
azure
Server ID
Standard_E20a_v4
Name
E20a_v4
API Reference
Standard_E20a_v4
Description
EAv4 family [AMD processor] 20 vCPUs
Family
EAv4
Hw Virt
Average Time To Start
20
Status
active
Observed At
2026-07-31T23:43:21.169457

Availability

REGION / IDSPOTONDEMAND
Central India (IN) / centralindia
0.1368 USD/h 0.794 USD/h
Jio India Central (IN) / jioindiacentral
- 0.794 USD/h
Jio India West (IN) / jioindiawest
- 0.794 USD/h
North Central US (US) / northcentralus
0.2328 USD/h 1.26 USD/h
West US 2 (US) / westus2
0.2328 USD/h 1.26 USD/h
West US 3 (US) / westus3
0.2422 USD/h 1.26 USD/h
East US (US) / eastus
0.2652 USD/h 1.26 USD/h
East US 2 (US) / eastus2
0.3412 USD/h 1.26 USD/h
India South Central (IN) / indiasouthcentral
0.2402 USD/h 1.3 USD/h
Spain Central (ES) / spaincentral
0.2458 USD/h 1.33 USD/h
Sweden Central (SE) / swedencentral
0.2476 USD/h 1.34 USD/h
Indonesia Central (ID) / indonesiacentral
0.2513 USD/h 1.36 USD/h
Malaysia West (MY) / malaysiawest
0.2528 USD/h 1.368 USD/h
Austria East (AT) / austriaeast
0.2532 USD/h 1.37 USD/h
Belgium Central (BE) / belgiumcentral
0.2532 USD/h 1.37 USD/h
Denmark East (DK) / denmarkeast
0.2532 USD/h 1.37 USD/h
Canada East (CA) / canadaeast
0.255 USD/h 1.38 USD/h
Canada Central (CA) / canadacentral
0.2654 USD/h 1.38 USD/h
Mexico Central (ZA) / mexicocentral
0.2561 USD/h 1.386 USD/h
West US (US) / westus
0.2587 USD/h 1.4 USD/h
North Europe (IE) / northeurope
0.2606 USD/h 1.41 USD/h
Central US (US) / centralus
0.263 USD/h 1.424 USD/h
Korea South (KR) / koreasouth
0.2661 USD/h 1.44 USD/h
UK South (GB) / uksouth
0.1776 USD/h 1.48 USD/h
France Central (FR) / francecentral
0.2735 USD/h 1.48 USD/h
Israel Central (IL) / israelcentral
0.2735 USD/h 1.48 USD/h
Italy North (IT) / italynorth
0.2735 USD/h 1.48 USD/h
Australia Central 2 (AU) / australiacentral2
0.151 USD/h 1.51 USD/h
Australia Central (AU) / australiacentral
0.279 USD/h 1.51 USD/h
Australia East (AU) / australiaeast
0.279 USD/h 1.51 USD/h
South Central US (US) / southcentralus
0.2794 USD/h 1.512 USD/h
West Central US (US) / westcentralus
0.2965 USD/h 1.512 USD/h
Germany West Central (DE) / germanywestcentral
0.2809 USD/h 1.52 USD/h
Japan East (JP) / japaneast
0.2809 USD/h 1.52 USD/h
Japan West (JP) / japanwest
0.2809 USD/h 1.52 USD/h
Korea Central (KR) / koreacentral
0.2809 USD/h 1.52 USD/h
Poland Central (PL) / polandcentral
0.2809 USD/h 1.52 USD/h
Southeast Asia (SG) / southeastasia
0.2809 USD/h 1.52 USD/h
West Europe (NL) / westeurope
0.2809 USD/h 1.52 USD/h
UK West (GB) / ukwest
0.2818 USD/h 1.525 USD/h
Qatar Central (QA) / qatarcentral
0.2866 USD/h 1.551 USD/h
UAE North (AE) / uaenorth
0.2866 USD/h 1.551 USD/h
Chile Central (CL) / chilecentral
0.2924 USD/h 1.582 USD/h
New Zealand North (NZ) / newzealandnorth
0.2931 USD/h 1.586 USD/h
West India (IN) / westindia
0.2981 USD/h 1.613 USD/h
Australia Southeast (AU) / australiasoutheast
0.3027 USD/h 1.638 USD/h
East Asia (HK) / eastasia
0.3086 USD/h 1.67 USD/h
South Africa North (ZA) / southafricanorth
0.3105 USD/h 1.68 USD/h
South India (IN) / southindia
0.3284 USD/h 1.777 USD/h
Norway East (NO) / norwayeast
0.333 USD/h 1.802 USD/h
Switzerland North (CH) / switzerlandnorth
0.333 USD/h 1.802 USD/h
France South (FR) / francesouth
0.3556 USD/h 1.924 USD/h
Germany North (DE) / germanynorth
0.3652 USD/h 1.976 USD/h
Brazil South (BR) / brazilsouth
0.3714 USD/h 2.01 USD/h
UAE Central (AE) / uaecentral
0.3726 USD/h 2.016 USD/h
South Africa West (ZA) / southafricawest
0.4036 USD/h 2.184 USD/h
Norway West (NO) / norwaywest
0.4328 USD/h 2.342 USD/h
Switzerland West (CH) / switzerlandwest
0.4328 USD/h 2.342 USD/h
Brazil Southeast (US) / brazilsoutheast
0.4829 USD/h 2.613 USD/h

Processor

vCPUs
20
Hypervisor
Microsoft Hyper-V
CPU Allocation
Dedicated
CPU Cores
10
CPU Speed
3.35 GHz
CPU Architecture
x86_64
CPU Manufacturer
AMD
CPU Family
EPYC
CPU Model
7763
CPU L1D Cache
32 KiB
CPU L1D Cache Total
320 KiB
CPU L1I Cache
32 KiB
CPU L1I Cache Total
320 KiB
CPU L2 Cache
512 KiB
CPU L2 Cache Total
5 MiB
CPU L3 Cache
16 MiB
CPU L3 Cache Total
80 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, ht, syscall, nx, mmxext, fxsr_opt, pdpe1gb, rdtscp, lm, rep_good, nopl, cpuid, extd_apicid, pni, pclmulqdq, ssse3, fma, cx16, sse4_1, sse4_2, movbe, popcnt, aes, xsave, avx, f16c, rdrand, hypervisor, lahf_lm, cmp_legacy, cr8_legacy, abm, sse4a, misalignsse, 3dnowprefetch, osvw, topoext, vmmcall, fsgsbase, bmi1, avx2, smep, bmi2, erms, rdseed, adx, smap, clflushopt, clwb, sha_ni, xsaveopt, xsavec, xgetbv1, xsaves, xsaveerptr, arat, umip, vaes, vpclmulqdq, rdpid, fsrm
Ecpus
10
Scalability
100

System Resources and Accelerators

MEMORY
Memory Amount
160 GiB
Memory Amount Actual
160 GiB
GPU
GPU Count
0
GPU Memory Min
0 MiB
GPU Memory Total
0 MiB
GPUs
    STORAGE
    Storage Size
    512 GB
    Storages
    • 512 GB ssd (temp disk)
    NETWORK
    Inbound Traffic
    0 GB/month
    Outbound Traffic
    0 GB/month
    IPv4
    0

    CPU and System Topology

    Server Description

    An x86_64 virtual machine featuring a high memory-to-core ratio, dedicated AMD EPYC processors, and bundled local storage.

    Memory OptimizedGeneral Purpose

    Microsoft Azure E20a_v4 is an x86_64 memory-optimized virtual machine from the EAv4 family, powered by an AMD EPYC 7763 processor running at 3.35 GHz. It provides 20 dedicated vCPUs across 10 physical cores, paired with 160.0 GB of RAM and 512 GB of local storage. Operating on the Microsoft Hyper-V hypervisor, this instance delivers a high memory-to-vCPU ratio of 8.0 GB per core. Benchmark data reveals a tradeoff: single-core CPU performance is poor, placing in the bottom 10%, whereas multi-core CPU and memory bandwidth metrics consistently rank as average. Notably, the PassMark memory score is strong, placing in the top 25%. This server is configured for memory-bound workloads such as database operations, caching, and software compilation, though it exhibits weak performance in medium-model LLM text generation.

    Economics

    Average Price per Region

    Prices per Zone

    Lowest Prices

    Performance

    Workload Profiles

    0.907Score
    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) 1,565,355 ops/sec 1,896,415 ops/sec 0.825 50.00% 50.00% -9.17%
    Redis RPS (pipeline=16, SET) 11,744,104 ops/sec 11,539,523 ops/sec 1.02 20.00% 20.00% +0.40%
    PassMark Memory Mark (composite) 2,787 2,411 1.16 10.00% 10.00% +1.50%
    Memory bandwidth (read, 16 MB ~ L3) 98,581 MB/sec 107,368 MB/sec 0.918 10.00% 10.00% -0.85%
    PassMark single-thread CPU 2,105 Mops/s 2,363 Mops/s 0.891 10.00% 10.00% -1.15%

    Memory Bandwidth

    Compression

    OpenSSL

    Geekbench Single-Core

    Score: 1,594

    Geekbench Multi-Core

    Score: 11,374

    Passmark CPU Scores

    BENCHMARKSCORE
    Mark
    		 24051
    Compression
    		 298504
    Encryption
    		 21223
    Extended Instructions
    		 17595
    Floating Point Maths
    		 39998
    Integer Maths
    		 67302
    Physics
    		 2785
    Prime Numbers
    		 177
    Single Threaded
    		 2105
    String Sorting
    		 39165

    Passmark Memory Scores

    BENCHMARKSCORE
    Memory Mark
    		 2787
    Database Operations
    		 6826
    Memory Latency
    		 51
    Memory Read Cached
    		 24678
    Memory Read Uncached
    		 12513
    Memory Write
    		 10978

    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
    E2a_v4 216 GiB0
    E4a_v4 432 GiB0
    E8a_v4 864 GiB0
    E16a_v4 16128 GiB0
    E32a_v4 32256 GiB0
    E48a_v4 48384 GiB0
    E64a_v4 64512 GiB0

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