c8i.12xlarge by Amazon Web Services

c8i.12xlarge is a Compute optimized [Intel processors] Gen8 12xlarge server offered by Amazon Web Services with 48 vCPUs, 96 GiB of memory and 0 GB of storage. The pricing starts at 0.2249 USD per hour.
48 vCPU
96 GiB Memory
Spare SCore
51,904
(All-cores)
2,120
(Single-core)

Specifications

Server Metadata

Vendor ID
aws
Name
c8i.12xlarge
Description
Compute optimized [Intel processors] Gen8 12xlarge
Family
c8i
Hw Virt
Average Time To Start
6.5
Status
active
Observed At
2026-09-13T03:56:07.279992

Availability

REGION / IDSPOTONDEMAND
(MY) / ap-southeast-5
0.709667 USD/h 2.2042 USD/h
Hyderabad (IN) / ap-south-2
0.3651 USD/h 2.249 USD/h
Ohio (US) / us-east-2
0.568333 USD/h 2.249 USD/h
Mumbai (IN) / ap-south-1
0.5924 USD/h 2.249 USD/h
Oregon (US) / us-west-2
0.831325 USD/h 2.249 USD/h
Northern Virgina (US) / us-east-1
0.89016 USD/h 2.249 USD/h
Stockholm (SE) / eu-north-1
0.342067 USD/h 2.4079 USD/h
Aragón (ES) / eu-south-2
0.2771 USD/h 2.413 USD/h
Dublin (IE) / eu-west-1
1.4465 USD/h 2.4132 USD/h
Quebec (CA) / ca-central-1
0.7108 USD/h 2.4607 USD/h
Seoul (KR) / ap-northeast-2
0.4823 USD/h 2.5402 USD/h
Frankfurt (DE) / eu-central-1
1.001167 USD/h 2.5666 USD/h
Singapore (SG) / ap-southeast-1
1.0598 USD/h 2.5932 USD/h
Paris (FR) / eu-west-3
1.029933 USD/h 2.6724 USD/h
London (GB) / eu-west-2
0.929567 USD/h 2.6724 USD/h
California (US) / us-west-1
0.74985 USD/h 2.8046 USD/h
Tokyo (JP) / ap-northeast-1
0.858133 USD/h 2.8313 USD/h
Sydney (AU) / ap-southeast-2
0.941267 USD/h 2.9371 USD/h
Cape Town (ZA) / af-south-1
0.4075 USD/h 3.0166 USD/h
(NZ) / ap-southeast-6
0.312733 USD/h 3.084 USD/h
Sao Paulo (BR) / sa-east-1
1.71865 USD/h 3.4663 USD/h

Processor

vCPUs
48
Hypervisor
nitro
CPU Allocation
Dedicated
CPU Cores
24
CPU Speed
3.9 GHz
CPU Architecture
x86_64
CPU Manufacturer
Intel
CPU Family
Xeon
CPU Model
6975P-C
CPU L1D Cache
48 KiB
CPU L1D Cache Total
1 MiB
CPU L1I Cache
64 KiB
CPU L1I Cache Total
2 MiB
CPU L2 Cache
2 MiB
CPU L2 Cache Total
48 MiB
CPU L3 Cache
480 MiB
CPU L3 Cache Total
480 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, ss, ht, syscall, nx, pdpe1gb, rdtscp, lm, constant_tsc, arch_perfmon, rep_good, nopl, xtopology, nonstop_tsc, cpuid, aperfmperf, tsc_known_freq, pni, pclmulqdq, monitor, ssse3, fma, cx16, pdcm, pcid, sse4_1, sse4_2, x2apic, movbe, popcnt, tsc_deadline_timer, aes, xsave, avx, f16c, rdrand, hypervisor, lahf_lm, abm, 3dnowprefetch, cpuid_fault, ssbd, ibrs, ibpb, stibp, ibrs_enhanced, 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, wbnoinvd, ida, arat, avx512vbmi, umip, pku, ospke, waitpkg, avx512_vbmi2, gfni, vaes, vpclmulqdq, avx512_vnni, avx512_bitalg, tme, avx512_vpopcntdq, rdpid, bus_lock_detect, cldemote, movdiri, movdir64b, md_clear, serialize, amx_bf16, avx512_fp16, amx_tile, amx_int8, flush_l1d, arch_capabilities
Ecpus
24.5
Scalability
102.08

System Resources and Accelerators

MEMORY
Memory Amount
96 GiB
Memory Amount Actual
96 GiB
Memory Generation
DDR5
Memory Speed
7200 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
      22.5 Gbps
      Network Speed Max
      22.5 Gbps
      Network Storage Speed Baseline
      15 Gbps
      Network Storage Speed Max
      15 Gbps
      Inbound Traffic
      0 GB/month
      Outbound Traffic
      0 GB/month
      IPv4
      0

      CPU and System Topology

      Server Description

      A compute-optimized x86_64 platform featuring forty-eight virtual cores and high-speed DDR5 memory for intensive processing workloads.

      Compute OptimizedGeneral Purpose

      Amazon Web Services c8i.12xlarge is a compute-optimized instance featuring 48 vCPUs and 24 physical Intel Xeon 6975P-C cores running at 3.9 GHz on the x86_64 architecture. Built on the AWS Nitro hypervisor, it is equipped with 96.0 GB of DDR5 memory at 7 GHz, yielding 2.0 GB of RAM per core. The instance lacks local storage and dedicated GPUs, but provides a baseline network bandwidth of 22 Gbps. Performance benchmarks show strong capabilities in software compilation, ray tracing, and database operations, with top-tier results in image and text processing. The processor supports Advanced Matrix Extensions and Advanced Vector Extensions, making it highly efficient for vector and integer math. This instance is suited for compute-intensive workloads, including static web serving, software development pipelines, and small-scale language model inference.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      3.69Score
      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) 10,684,417 ops/sec 1,917,397 ops/sec 5.57 50.00% 50.00% +136.00%
      Redis RPS (pipeline=16, SET) 59,282,888 ops/sec 11,681,410 ops/sec 5.07 20.00% 20.00% +38.40%
      PassMark Memory Mark (composite) 2,657 2,418 1.1 10.00% 10.00% +0.96%
      Memory bandwidth (read, 16 MB ~ L3) 240,243 MB/sec 108,140 MB/sec 2.22 10.00% 10.00% +8.30%
      PassMark single-thread CPU 3,256 Mops/s 2,365 Mops/s 1.38 10.00% 10.00% +3.27%

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 2,196

      Geekbench Multi-Core

      Score: 20,153

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 69280
      Compression
      		 952565
      Encryption
      		 54673
      Extended Instructions
      		 67603
      Floating Point Maths
      		 179317
      Integer Maths
      		 247683
      Physics
      		 8599
      Prime Numbers
      		 491
      Single Threaded
      		 3256
      String Sorting
      		 125295

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 2657
      Database Operations
      		 24133
      Memory Latency
      		 68
      Memory Read Cached
      		 26767
      Memory Read Uncached
      		 16157
      Memory Write
      		 11395

      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

      PostgreSQL heavy read-only throughput

      Alternatives

      Servers of the Same Family

      INSTANCEvCPUsMEMORYGPUs
      c8i.large 24 GiB0
      c8i.xlarge 48 GiB0
      c8i.2xlarge 816 GiB0
      c8i.4xlarge 1632 GiB0
      c8i.8xlarge 3264 GiB0
      c8i.16xlarge 64128 GiB0
      c8i.24xlarge 96192 GiB0

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      c8i.12xlarge FAQs