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c8a.24xlarge by Amazon Web Services

c8a.24xlarge is a Compute optimized [AMD processors] Gen8 24xlarge server offered by Amazon Web Services with 96 vCPUs, 192 GiB of memory and 0 GB of storage. The pricing starts at 0.7063 USD per hour.
96 vCPU
192 GiB Memory
Spare SCore
350849
(All-cores)
3781
(Single-core)

Specifications

Server Metadata

Vendor ID
aws
Name
c8a.24xlarge
Description
Compute optimized [AMD processors] Gen8 24xlarge
Family
c8a
Hw Virt
Status
active
Observed At
2026-07-20T05:53:07.854573

Availability

REGION / IDSPOTONDEMAND
Northern Virgina (US) / us-east-1
1.8268 USD/h 5.173 USD/h
Ohio (US) / us-east-2
1.653833 USD/h 5.173 USD/h
Oregon (US) / us-west-2
1.886625 USD/h 5.173 USD/h
Aragón (ES) / eu-south-2
1.3414 USD/h 5.5493 USD/h
Dublin (IE) / eu-west-1
2.2258 USD/h 5.5502 USD/h
Frankfurt (DE) / eu-central-1
1.6346 USD/h 5.9035 USD/h
Tokyo (JP) / ap-northeast-1
3.186433 USD/h 6.5117 USD/h

Processor

vCPUs
96
Hypervisor
nitro
CPU Allocation
Dedicated
CPU Cores
96
CPU Speed
4.5 GHz
CPU Architecture
x86_64
CPU Manufacturer
AMD
CPU Family
EPYC
CPU Model
9R45
CPU L1D Cache
48 KiB
CPU L1D Cache Total
5 MiB
CPU L1I Cache
32 KiB
CPU L1I Cache Total
3 MiB
CPU L2 Cache
1 MiB
CPU L2 Cache Total
96 MiB
CPU L3 Cache
32 MiB
CPU L3 Cache Total
384 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, xtopology, nonstop_tsc, cpuid, extd_apicid, aperfmperf, tsc_known_freq, pni, pclmulqdq, monitor, ssse3, fma, cx16, pcid, sse4_1, sse4_2, x2apic, movbe, popcnt, aes, xsave, avx, f16c, rdrand, hypervisor, lahf_lm, cmp_legacy, cr8_legacy, abm, sse4a, misalignsse, 3dnowprefetch, topoext, perfctr_core, ssbd, perfmon_v2, ibrs, ibpb, stibp, ibrs_enhanced, vmmcall, fsgsbase, tsc_adjust, bmi1, avx2, smep, bmi2, erms, invpcid, avx512f, avx512dq, rdseed, adx, smap, avx512ifma, clflushopt, clwb, avx512cd, sha_ni, avx512bw, avx512vl, xsaveopt, xsavec, xgetbv1, xsaves, avx_vnni, avx512_bf16, clzero, xsaveerptr, rdpru, wbnoinvd, arat, avx512vbmi, pku, ospke, avx512_vbmi2, gfni, vaes, vpclmulqdq, avx512_vnni, avx512_bitalg, avx512_vpopcntdq, rdpid, movdiri, movdir64b, fsrm, avx512_vp2intersect, flush_l1d
Ecpus
92.8
Scalability
96.67

System Resources and Accelerators

MEMORY
Memory Amount
192 GiB
Memory Amount Actual
192 GiB
Memory Generation
DDR5
Memory Speed
6400 Mhz
GPU
GPU Count
0
GPU Memory Min
0 MiB
GPU Memory Total
0 MiB
GPUs
    STORAGE
    Storage Size
    0 GB
    Storages
      NETWORK
      Network Speed Baseline
      40 Gbps
      Network Speed Max
      40 Gbps
      Network Storage Speed Baseline
      30 Gbps
      Network Storage Speed Max
      30 Gbps
      Inbound Traffic
      0 GB/month
      Outbound Traffic
      0 GB/month
      IPv4
      0

      Server Description

      A high-frequency, compute-optimized virtual server featuring ninety-six dedicated AMD EPYC cores and high-speed DDR5 memory for intensive parallel workloads.

      Compute Optimized

      Amazon Web Services c8a.24xlarge is a compute-optimized instance featuring 96 dedicated physical cores and 96 vCPUs powered by an AMD EPYC 9R45 processor running at 4.5 GHz. Built on the Nitro hypervisor, it includes 192.0 GB of DDR5 memory at 6 GHz, providing a 1:2 vCPU-to-RAM ratio. The instance lacks local storage and GPUs, but delivers a baseline network bandwidth of 40 Gbps. Benchmark results place the c8a.24xlarge in the top tier for single-core and multi-core CPU performance, memory bandwidth, and cryptographic operations. It is highly efficient for compute-intensive tasks, including software compilation, database operations, and static web serving. However, the lack of local storage requires network-attached alternatives, and text generation for smaller LLM models is average compared to its top-tier prompt processing speeds.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      8.24Score
      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) 26,859,514 ops/sec 1,895,870 ops/sec 14.2 50.00% 50.00% +277.00%
      Redis RPS (pipeline=16, SET) 168,261,861 ops/sec 11,503,938 ops/sec 14.6 20.00% 20.00% +71.00%
      PassMark Memory Mark (composite) 2,816 2,410 1.17 10.00% 10.00% +1.58%
      Memory bandwidth (read, 16 MB ~ L3) 672,656 MB/sec 107,331 MB/sec 6.27 10.00% 10.00% +20.20%
      PassMark single-thread CPU 3,811 Mops/s 2,363 Mops/s 1.61 10.00% 10.00% +4.88%

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 2,819

      Geekbench Multi-Core

      Score: 31,526

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		139164
      Compression
      		2404713
      Encryption
      		136678
      Extended Instructions
      		201697
      Floating Point Maths
      		647691
      Integer Maths
      		706332
      Physics
      		28719
      Prime Numbers
      		2138
      Single Threaded
      		3811
      String Sorting
      		328810

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		2816
      Database Operations
      		42558
      Memory Latency
      		87
      Memory Read Cached
      		33885
      Memory Read Uncached
      		32687
      Memory Write
      		32783

      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
      c8a.medium 12 GiB0
      c8a.large 24 GiB0
      c8a.xlarge 48 GiB0
      c8a.2xlarge 816 GiB0
      c8a.4xlarge 1632 GiB0
      c8a.8xlarge 3264 GiB0
      c8a.12xlarge 4896 GiB0

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      c8a.24xlarge FAQs