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c5ad.12xlarge by Amazon Web Services

c5ad.12xlarge is a Compute optimized [AMD processors] [Instance store volumes] Gen5 12xlarge server offered by Amazon Web Services with 48 vCPUs, 96 GiB of memory and 1.8 TB of storage. The pricing starts at 0.3313 USD per hour.
48 vCPU
96 GiB Memory
1.8 TB Storage
Spare SCore
18430
(All-cores)
766
(Single-core)

Specifications

Server Metadata

Vendor ID
aws
Name
c5ad.12xlarge
Description
Compute optimized [AMD processors] [Instance store volumes] Gen5 12xlarge
Family
c5ad
Hw Virt
Status
active
Observed At
2026-08-05T08:33:30.606521

Availability

REGION / IDSPOTONDEMAND
Northern Virgina (US) / us-east-1
0.8878 USD/h 2.064 USD/h
Ohio (US) / us-east-2
0.83505 USD/h 2.064 USD/h
Oregon (US) / us-west-2
0.9341 USD/h 2.064 USD/h
Dublin (IE) / eu-west-1
1.178467 USD/h 2.352 USD/h
Frankfurt (DE) / eu-central-1
1.1029 USD/h 2.4 USD/h
Singapore (SG) / ap-southeast-1
0.85165 USD/h 2.424 USD/h
Milan (IT) / eu-south-1
0.547433 USD/h 2.472 USD/h
Sydney (AU) / ap-southeast-2
0.989867 USD/h 2.712 USD/h
Cape Town (ZA) / af-south-1
0.443767 USD/h 2.808 USD/h
Sao Paulo (BR) / sa-east-1
1.4091 USD/h 3.216 USD/h

Processor

vCPUs
48
Hypervisor
nitro
CPU Allocation
Dedicated
CPU Cores
24
CPU Speed
3.3 GHz
CPU Architecture
x86_64
CPU Manufacturer
AMD
CPU Family
EPYC
CPU Model
7R32
CPU L1D Cache
32 KiB
CPU L1D Cache Total
768 KiB
CPU L1I Cache
32 KiB
CPU L1I Cache Total
768 KiB
CPU L2 Cache
512 KiB
CPU L2 Cache Total
12 MiB
CPU L3 Cache
16 MiB
CPU L3 Cache Total
96 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, 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, ssbd, ibrs, ibpb, stibp, vmmcall, fsgsbase, bmi1, avx2, smep, bmi2, rdseed, adx, smap, clflushopt, clwb, sha_ni, xsaveopt, xsavec, xgetbv1, clzero, xsaveerptr, rdpru, wbnoinvd, arat, npt, nrip_save, rdpid
Ecpus
24.1
Scalability
100.42

System Resources and Accelerators

MEMORY
Memory Amount
96 GiB
Memory Amount Actual
96 GiB
Memory Generation
DDR4
Memory Speed
2933 Mhz
GPU
GPU Count
0
GPU Memory Min
0 MiB
GPU Memory Total
0 MiB
GPUs
    STORAGE
    Storage Size
    1800 GB
    Storage Type
    nvme ssd
    Storages
    • 900 GB nvme ssd
    • 900 GB nvme ssd
    NETWORK
    Network Speed Baseline
    12 Gbps
    Network Speed Max
    12 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 compute-optimized instance featuring forty-eight vCPUs, fast DDR4 memory, and high-speed local NVMe SSD storage for multi-threaded workloads.

    Compute OptimizedStorage & Database

    The Amazon Web Services c5ad.12xlarge is an x86_64 compute-optimized instance featuring 48 vCPUs powered by an AMD EPYC 7R32 processor running at 3.3 GHz. It is equipped with 96.0 GB of DDR4 memory and 1800 GB of local NVMe SSD storage, operating on the AWS Nitro hypervisor with a baseline network bandwidth of 12 Gbps. Benchmark data reveals a tradeoff, with poor single-core performance but average multi-core execution and strong performance in cryptographic and memory operations, ranking in the top 25% for Passmark encryption and memory tests. Lacking a GPU, this instance is optimized for CPU-bound, multi-threaded workloads. It is highly suited for batch processing, software compilation, database operations, and web serving workloads that require high-speed local scratch storage.

    Economics

    Average Price per Region

    Prices per Zone

    Lowest Prices

    Performance

    Workload Profiles

    1.66Score
    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) 3,837,285 ops/sec 1,910,660 ops/sec 2.01 50.00% 50.00% +41.80%
    Redis RPS (pipeline=16, SET) 25,761,385 ops/sec 11,608,287 ops/sec 2.22 20.00% 20.00% +17.30%
    PassMark Memory Mark (composite) 2,889 2,416 1.2 10.00% 10.00% +1.84%
    Memory bandwidth (read, 16 MB ~ L3) 100,573 MB/sec 107,896 MB/sec 0.932 10.00% 10.00% -0.70%
    PassMark single-thread CPU 2,111 Mops/s 2,364 Mops/s 0.893 10.00% 10.00% -1.13%

    Memory Bandwidth

    Compression

    OpenSSL

    Geekbench Single-Core

    Score: 1,333

    Geekbench Multi-Core

    Score: 13,095

    Passmark CPU Scores

    BENCHMARKSCORE
    Mark
    		 46135
    Compression
    		 710989
    Encryption
    		 51205
    Extended Instructions
    		 44661
    Floating Point Maths
    		 96629
    Integer Maths
    		 161950
    Physics
    		 4594
    Prime Numbers
    		 235
    Single Threaded
    		 2111
    String Sorting
    		 93676

    Passmark Memory Scores

    BENCHMARKSCORE
    Memory Mark
    		 2889
    Database Operations
    		 16391
    Memory Latency
    		 51
    Memory Read Cached
    		 24529
    Memory Read Uncached
    		 12930
    Memory Write
    		 13368

    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
    c5ad.large 24 GiB0
    c5ad.xlarge 48 GiB0
    c5ad.2xlarge 816 GiB0
    c5ad.4xlarge 1632 GiB0
    c5ad.8xlarge 3264 GiB0
    c5ad.16xlarge 64128 GiB0
    c5ad.24xlarge 96192 GiB0

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    c5ad.12xlarge FAQs