r5ad.8xlarge by Amazon Web Services

r5ad.8xlarge is a Memory optimized [AMD processors] [Instance store volumes] Gen5 8xlarge server offered by Amazon Web Services with 32 vCPUs, 256 GiB of memory and 1.2 TB of storage. The pricing starts at 0.4598 USD per hour.
32 vCPU
256 GiB Memory
1.2 TB Storage
Spare SCore
9,444
(All-cores)
591
(Single-core)

Specifications

Server Metadata

Vendor ID
aws
Name
r5ad.8xlarge
Description
Memory optimized [AMD processors] [Instance store volumes] Gen5 8xlarge
Family
Memory Optimized
Series
r5ad
Hw Virt
Status
active
Observed At
2026-11-14T01:02:04.742376

Availability

Region / IDSpotOndemand
Mumbai (IN) / ap-south-1
0.5849 USD/h
1.329 USD/h
Ohio (US) / us-east-2
0.581633 USD/h
2.096 USD/h
Northern Virgina (US) / us-east-1
0.6518 USD/h
2.096 USD/h
Oregon (US) / us-west-2
1.0544 USD/h
2.096 USD/h
Quebec (CA) / ca-central-1
0.865 USD/h
2.304 USD/h
Dublin (IE) / eu-west-1
1.096067 USD/h
2.336 USD/h
California (US) / us-west-1
0.7431 USD/h
2.368 USD/h
Paris (FR) / eu-west-3
0.766467 USD/h
2.448 USD/h
London (GB) / eu-west-2
0.862167 USD/h
2.464 USD/h
Seoul (KR) / ap-northeast-2
0.9669 USD/h
2.528 USD/h
Frankfurt (DE) / eu-central-1
1.243567 USD/h
2.528 USD/h
Tokyo (JP) / ap-northeast-1
0.84425 USD/h
2.544 USD/h
Sydney (AU) / ap-southeast-2
1.053467 USD/h
2.544 USD/h
Singapore (SG) / ap-southeast-1
1.464933 USD/h
2.544 USD/h
Sao Paulo (BR) / sa-east-1
0.6698 USD/h
3.328 USD/h

Processor

vCPUs
32
Hypervisor
nitro
CPU Allocation
Dedicated
CPU Cores
16
CPU Speed
2.5 GHz
CPU Architecture
x86_64
CPU Manufacturer
AMD
CPU Family
EPYC
CPU Model
7571
CPU L1D Cache
32 KiB
CPU L1D Cache Total
512 KiB
CPU L1I Cache
64 KiB
CPU L1I Cache Total
1 MiB
CPU L2 Cache
512 KiB
CPU L2 Cache Total
8 MiB
CPU L3 Cache
8 MiB
CPU L3 Cache Total
32 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, constant_tsc, rep_good, nopl, nonstop_tsc, cpuid, extd_apicid, amd_dcm, aperfmperf, tsc_known_freq, 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, topoext, perfctr_core, vmmcall, fsgsbase, bmi1, avx2, smep, bmi2, rdseed, adx, smap, clflushopt, sha_ni, xsaveopt, xsavec, xgetbv1, clzero, xsaveerptr, arat, npt, nrip_save
Ecpus
16
Scalability
50

System Resources and Accelerators

Memory
Memory Amount
256 GiB
Memory Amount Actual
256 GiB
Memory Generation
DDR4
Memory Speed
2667 Mhz
Accelerators
Accelerator Count
0
Accelerator Memory Min
0 MiB
Accelerator Memory Total
0 MiB
Accelerators
    Storage
    Storage Size
    1200 GB
    Storage Type
    nvme ssd
    Storages
    • 600 GB nvme ssd
    • 600 GB nvme ssd
    Compatible Storage IDs
    standard, gp2, gp3, st1, sc1, io1, io2
    Network
    Network Speed Baseline
    7.5 Gbps
    Network Speed Max
    10 Gbps
    Network Storage Speed Baseline
    4.75 Gbps
    Network Storage Speed Max
    4.75 Gbps
    Inbound Traffic
    0 GB/month
    Outbound Traffic
    0 GB/month
    IPv4
    0

    Server Description

    A memory-optimized instance combining high-capacity DDR4 RAM with fast local NVMe SSD storage for data-intensive and caching workloads.

    Amazon Web Services r5ad.8xlarge is a memory-optimized instance featuring 32 vCPUs and 16 physical cores powered by an AMD EPYC 7571 processor running at 2.5 GHz. Built on the Nitro hypervisor, it includes 256.0 GB of DDR4 memory and a bundled 1200 GB local NVMe SSD instance store. While single-core CPU benchmarks and single-threaded compression tasks perform in the bottom 10% tier, multi-core execution, memory bandwidth, and database operations achieve average performance levels. With a baseline network bandwidth of 8 Gbps, this instance is designed for memory-intensive workloads that benefit from high-capacity local storage. It is well-suited for in-memory databases, caching layers, and distributed data processing tasks where memory capacity and local storage speed are prioritized over raw single-threaded compute power.

    Economics

    Average Price per Region

    Prices per Zone

    Lowest Prices

    Performance

    Workload Profiles

    0.81Score
    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) 1,697,611 ops/sec 1,933,252 ops/sec 0.89 50.00% 50.00% -5.70%
    Redis RPS (pipeline=16, SET) 11,238,278 ops/sec 11,814,424 ops/sec 0.92 20.00% 20.00% -1.70%
    PassMark Memory Mark (composite) 2,125 2,408 0.88 10.00% 10.00% -1.30%
    Memory bandwidth (read, 16 MB ~ L3) 55,797 MB/sec 108,674 MB/sec 0.51 10.00% 10.00% -6.50%
    PassMark single-thread CPU 1,399 Mops/s 2,365 Mops/s 0.58 10.00% 10.00% -5.30%

    Memory Bandwidth

    Compression

    OpenSSL

    Geekbench Single-Core

    Score: 717

    Geekbench Multi-Core

    Score: 6,127

    Passmark CPU Scores

    BENCHMARKSCORE
    Mark
    		 22,217
    Compression
    		 353,177
    Encryption
    		 25,944
    Extended Instructions
    		 13,149
    Floating Point Maths
    		 43,691
    Integer Maths
    		 82,835
    Physics
    		 1,734
    Prime Numbers
    		 73
    Single Threaded
    		 1,399
    String Sorting
    		 47,489

    Passmark Memory Scores

    BENCHMARKSCORE
    Memory Mark
    		 2,125
    Database Operations
    		 7,448
    Memory Latency
    		 62
    Memory Read Cached
    		 14,934
    Memory Read Uncached
    		 11,502
    Memory Write
    		 8,200

    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

    INSTANCEvCPUsMEMORYAccelerators
    r6g.medium 18 GiB0
    r6gd.medium 18 GiB0
    r7a.medium 18 GiB0
    r7g.medium 18 GiB0
    r7gd.medium 18 GiB0
    r8a.medium 18 GiB0
    r8g.medium 18 GiB0

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    r5ad.8xlarge FAQs