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c8a.48xlarge by Amazon Web Services

c8a.48xlarge is a Compute optimized [AMD processors] Gen8 48xlarge server offered by Amazon Web Services with 192 vCPUs, 384 GiB of memory and 0 GB of storage. The pricing starts at 1.5022 USD per hour.
192 vCPU
384 GiB Memory
Spare SCore
683823
(All-cores)
3793
(Single-core)

Specifications

Server Metadata

Vendor ID
aws
Name
c8a.48xlarge
Description
Compute optimized [AMD processors] Gen8 48xlarge
Family
c8a
Hw Virt
Status
active
Observed At
2026-08-01T14:53:20.764293

Availability

REGION / IDSPOTONDEMAND
Northern Virgina (US) / us-east-1
3.38644 USD/h 10.3459 USD/h
Ohio (US) / us-east-2
3.348367 USD/h 10.3459 USD/h
Oregon (US) / us-west-2
3.221025 USD/h 10.3459 USD/h
Aragón (ES) / eu-south-2
3.389567 USD/h 11.0986 USD/h
Dublin (IE) / eu-west-1
3.88805 USD/h 11.1005 USD/h
Frankfurt (DE) / eu-central-1
5.665467 USD/h 11.807 USD/h
Tokyo (JP) / ap-northeast-1
6.2277 USD/h 13.0234 USD/h

Processor

vCPUs
192
Hypervisor
nitro
CPU Allocation
Dedicated
CPU Cores
192
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
9 MiB
CPU L1I Cache
32 KiB
CPU L1I Cache Total
6 MiB
CPU L2 Cache
1 MiB
CPU L2 Cache Total
192 MiB
CPU L3 Cache
32 MiB
CPU L3 Cache Total
768 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
180.3
Scalability
93.91

System Resources and Accelerators

MEMORY
Memory Amount
384 GiB
Memory Amount Actual
384 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
      75 Gbps
      Network Speed Max
      75 Gbps
      Network Storage Speed Baseline
      60 Gbps
      Network Storage Speed Max
      60 Gbps
      Inbound Traffic
      0 GB/month
      Outbound Traffic
      0 GB/month
      IPv4
      0

      Server Description

      A high-density compute instance featuring 192 dedicated AMD EPYC cores, DDR5 memory, and top-tier processing performance for intensive workloads.

      Compute Optimized

      Amazon Web Services c8a.48xlarge is an x86_64 compute-optimized server instance featuring 192 dedicated physical cores and 192 vCPUs powered by an AMD EPYC 9R45 processor running at 4.5 GHz. It includes 384.0 GB of DDR5 memory at 6 GHz, providing 2.0 GB of RAM per core, and operates on the AWS Nitro hypervisor with a baseline network bandwidth of 75 Gbps. The instance lacks local storage and GPU accelerators. Benchmark results place its single-core and multi-core CPU performance, memory bandwidth, and software compilation capabilities in the top tier (top 10%). While prompt processing for large language models ranks in the top tier, text generation performance ranges from average to strong. This instance is configured for compute-intensive workloads such as software compilation, cryptography, static web serving, and high-throughput batch processing where high CPU density is required.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      13.5Score
      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) 48,998,277 ops/sec 1,896,415 ops/sec 25.8 50.00% 50.00% +408.00%
      Redis RPS (pipeline=16, SET) 315,647,596 ops/sec 11,539,523 ops/sec 27.4 20.00% 20.00% +93.90%
      PassMark Memory Mark (composite) 2,955 2,411 1.23 10.00% 10.00% +2.09%
      Memory bandwidth (read, 16 MB ~ L3) 1,301,012 MB/sec 107,368 MB/sec 12.1 10.00% 10.00% +28.30%
      PassMark single-thread CPU 3,816 Mops/s 2,363 Mops/s 1.61 10.00% 10.00% +4.88%

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 2,816

      Geekbench Multi-Core

      Score: 27,743

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 183733
      Compression
      		 4690875
      Encryption
      		 266150
      Extended Instructions
      		 394976
      Floating Point Maths
      		 1258390
      Integer Maths
      		 1377872
      Physics
      		 56379
      Prime Numbers
      		 4143
      Single Threaded
      		 3816
      String Sorting
      		 620846

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 2955
      Database Operations
      		 46747
      Memory Latency
      		 82
      Memory Read Cached
      		 33824
      Memory Read Uncached
      		 32778
      Memory Write
      		 32766

      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.48xlarge FAQs