c8i.4xlarge by Amazon Web Services

c8i.4xlarge is a Compute optimized [Intel processors] Gen8 4xlarge server offered by Amazon Web Services with 16 vCPUs, 32 GiB of memory and 0 GB of storage. The pricing starts at 0.075 USD per hour.
16 vCPU
32 GiB Memory
Spare SCore
17,297
(All-cores)
2,128
(Single-core)

Specifications

Server Metadata

Vendor ID
aws
Name
c8i.4xlarge
Description
Compute optimized [Intel processors] Gen8 4xlarge
Family
c8i
Hw Virt
Average Time To Start
6.25
Status
active
Observed At
2026-10-28T19:56:30.279689

Availability

REGION / IDSPOTONDEMAND
(MY) / ap-southeast-5
0.2166 USD/h 0.7347 USD/h
Hyderabad (IN) / ap-south-2
0.075 USD/h 0.7497 USD/h
Ohio (US) / us-east-2
0.236933 USD/h 0.7497 USD/h
Northern Virgina (US) / us-east-1
0.3215 USD/h 0.7497 USD/h
Mumbai (IN) / ap-south-1
0.2623 USD/h 0.7497 USD/h
Oregon (US) / us-west-2
0.33515 USD/h 0.7497 USD/h
Stockholm (SE) / eu-north-1
0.182733 USD/h 0.8026 USD/h
Aragón (ES) / eu-south-2
0.0839 USD/h 0.8043 USD/h
Dublin (IE) / eu-west-1
0.4369 USD/h 0.8044 USD/h
Quebec (CA) / ca-central-1
0.319333 USD/h 0.8202 USD/h
Seoul (KR) / ap-northeast-2
0.222025 USD/h 0.8467 USD/h
Frankfurt (DE) / eu-central-1
0.3543 USD/h 0.8555 USD/h
Singapore (SG) / ap-southeast-1
0.440333 USD/h 0.8644 USD/h
London (GB) / eu-west-2
0.2893 USD/h 0.8908 USD/h
Paris (FR) / eu-west-3
0.338467 USD/h 0.8908 USD/h
California (US) / us-west-1
0.3118 USD/h 0.9349 USD/h
Tokyo (JP) / ap-northeast-1
0.385033 USD/h 0.9438 USD/h
Sydney (AU) / ap-southeast-2
0.418267 USD/h 0.979 USD/h
Cape Town (ZA) / af-south-1
0.344167 USD/h 1.0055 USD/h
(NZ) / ap-southeast-6
0.1094 USD/h 1.028 USD/h
Sao Paulo (BR) / sa-east-1
0.4613 USD/h 1.1554 USD/h

Processor

vCPUs
16
Hypervisor
nitro
CPU Allocation
Dedicated
CPU Cores
8
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
384 KiB
CPU L1I Cache
64 KiB
CPU L1I Cache Total
512 KiB
CPU L2 Cache
2 MiB
CPU L2 Cache Total
16 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
8.1
Scalability
50.62

System Resources and Accelerators

MEMORY
Memory Amount
32 GiB
Memory Amount Actual
32 GiB
Memory Generation
DDR5
Memory Speed
7200 Mhz
ACCELERATORS
Accelerator Count
0
Accelerator Memory Min
0 MiB
Accelerator Memory Total
0 MiB
Accelerators
    STORAGE
    Storage Size
    0 GB
    Storages
      NETWORK
      Network Speed Baseline
      7.5 Gbps
      Network Speed Max
      15 Gbps
      Network Storage Speed Baseline
      5 Gbps
      Network Storage Speed Max
      10 Gbps
      Inbound Traffic
      0 GB/month
      Outbound Traffic
      0 GB/month
      IPv4
      0

      CPU and System Topology

      Server Description

      A compute-optimized x86_64 virtual server featuring high-speed DDR5 memory and dedicated Intel Xeon processors for single-threaded and text-processing workloads.

      Compute Optimized

      The Amazon Web Services c8i.4xlarge is an x86_64 compute-optimized instance featuring 16 vCPUs and 8 physical cores powered by an Intel Xeon 6975P-C processor running at 3.9 GHz. It includes 32.0 GB of DDR5 memory at 7 GHz, providing 2.0 GB per core, but lacks local storage and GPU accelerators. Built on the Nitro hypervisor, the instance delivers a baseline network bandwidth of 8 Gbps. In benchmarks, it exhibits top-tier single-core performance, particularly in Geekbench single-core and text processing tests, alongside strong single-threaded compression speeds. Multi-core metrics and memory bandwidth align with average tiers. Due to its high clock speed and dedicated CPU allocation, the c8i.4xlarge is suited for compute-intensive workloads such as software compilation, web serving, and lightweight LLM text generation, though users must account for the lack of local storage.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      1.6Score
      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) 3,561,076 ops/sec 1,919,289 ops/sec 1.9 50.00% 50.00% +38.00%
      Redis RPS (pipeline=16, SET) 19,760,899 ops/sec 11,728,058 ops/sec 1.7 20.00% 20.00% +11.00%
      PassMark Memory Mark (composite) 2,599 2,416 1.1 10.00% 10.00% +0.96%
      Memory bandwidth (read, 16 MB ~ L3) 138,170 MB/sec 108,466 MB/sec 1.3 10.00% 10.00% +2.70%
      PassMark single-thread CPU 3,258 Mops/s 2,365 Mops/s 1.4 10.00% 10.00% +3.40%

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 2,211

      Geekbench Multi-Core

      Score: 13,253

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 29,108
      Compression
      		 320,225
      Encryption
      		 18,092
      Extended Instructions
      		 22,930
      Floating Point Maths
      		 59,751
      Integer Maths
      		 82,506
      Physics
      		 3,610
      Prime Numbers
      		 176
      Single Threaded
      		 3,258
      String Sorting
      		 42,471

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 2,599
      Database Operations
      		 9,248
      Memory Latency
      		 67
      Memory Read Cached
      		 28,921
      Memory Read Uncached
      		 16,818
      Memory Write
      		 12,015

      Stress-ng Stressors

      CPU integerSingleMultiScaling
      atomic
      		 205.01 180.63 0.88×
      bitops
      		 163,710 1,527,713 9.33×
      branch
      		 153,533 2,002,164 13.04×
      funccall
      		 850.21 8,911 10.48×
      funcret
      		 13,880 175,627 12.65×
      hash
      		 187,983 2,215,600 11.79×
      intmath
      		 70,542 683,992 9.70×
      nop
      		 287,872 2,488,613 8.64×
      prime
      		 522,982 5,519,269 10.55×
      rotate
      		 108,391 1,499,711 13.84×
      str
      		 1,049,469 11,679,075 11.13×
      wcs
      		 782,949 7,198,754 9.19×
      CryptographySingleMultiScaling
      crypt
      		 3,700 37,673 10.18×
      CompressionSingleMultiScaling
      jpeg
      		 895.63 9,331 10.42×
      zlib
      		 52.55 893.33 17.00×
      HypervisorSingleMultiScaling
      clock
      		 54,087 410,883 7.60×
      clone
      		 475.88 4,256 8.94×
      context
      		 5,779 77,334 13.38×
      cpu-sched
      		 65.5 1,030 15.73×
      eventfd
      		 168,914 1,020,912 6.04×
      fault
      		 33,178 226,953 6.84×
      fork
      		 5,207 62,767 12.06×
      getrandom
      		 63,839 762,801 11.95×
      hrtimers
      		 641,836 2,009,831 3.13×
      mprotect
      		 987,697 6,302,875 6.38×
      mtx
      		 21,015,950 539,597,185 25.68×
      munmap
      		 4,247 54,939 12.94×
      null
      		 998,033 13,071,724 13.10×
      pipe
      		 737,205 13,694,404 18.58×
      priv-instr
      		 897,141 10,072,400 11.23×
      resched
      		 9,973,262 1,671,802 0.17×
      switch
      		 289,636 6,762,509 23.35×
      timermix
      		 203,321 2,781,513 13.68×
      tlb-shootdown
      		 9,228 40,614 4.40×
      tsc
      		 633,636 8,241,269 13.01×
      usersyscall
      		 758,901 8,702,609 11.47×
      vdso
      		 95,693,014 1,190,070,943 12.44×
      vfork
      		 22,750 274,325 12.06×
      x86syscall
      		 10,966,360 149,374,474 13.62×
      yield
      		 19,775,206 22,052,239 1.12×
      zero
      		 6,994,651 93,480,349 13.36×
      CPU float/SIMDSingleMultiScaling
      eigen
      		 18,072 180,832 10.01×
      expmath
      		 3,823 45,274 11.84×
      fma
      		 1,314,730 14,624,563 11.12×
      fp
      		 220.72 2,687 12.17×
      fractal
      		 7.6 84.4 11.11×
      hyperbolic
      		 4,434 52,863 11.92×
      logmath
      		 5,676 73,225 12.90×
      matrix
      		 5,657 54,802 9.69×
      matrix-3d
      		 539.65 3,961 7.34×
      monte-carlo
      		 322.78 4,237 13.13×
      mpfr
      		 1,905 19,637 10.31×
      powmath
      		 2,159 26,732 12.38×
      trig
      		 2,995 31,684 10.58×
      veccmp
      		 25,818 249,843 9.68×
      vecfp
      		 1,637 16,957 10.36×
      vecmath
      		 4,259 48,084 11.29×
      vecshuf
      		 886.98 8,170 9.21×
      vecwide
      		 35,161 328,521 9.34×
      AlgorithmsSingleMultiScaling
      bitonicsort
      		 10.6 105.6 9.96×
      bsearch
      		 341.96 3,418 9.99×
      bubblesort
      		 1.2 12.8 10.67×
      fibsearch
      		 325.94 3,288 10.09×
      heapsort
      		 10.8 121.6 11.26×
      hsearch
      		 9,657 90,843 9.41×
      insertionsort
      		 14 112 8.00×
      malloc
      		 2,600,177 26,910,654 10.35×
      mcontend
      		 124.64 3,114 24.98×
      mergesort
      		 33.6 390.99 11.64×
      qsort
      		 24.2 272.39 11.26×
      skiplist
      		 7,000 87,538 12.51×
      tree
      		 1.6 15.99 9.99×
      MemorySingleMultiScaling
      cache
      		 290,105 1,719,202 5.93×
      cachehammer
      		 170,199 2,294,585 13.48×
      cacheline
      		 59.26 912.35 15.40×
      l1cache
      		 811.7 3,358 4.14×
      memcpy
      		 755.99 6,261 8.28×
      memrate
      		 0.13 2.1 16.15×
      memthrash
      		 144.21 669.88 4.65×
      ptr-chase
      		 25,745,034 127,062,069 4.94×
      spinmem
      		 223.39 736.12 3.30×
      stream
      		 4.29 388.32 90.52×
      vm
      		 132,068 293,629 2.22×

      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

      INSTANCEvCPUsMEMORYAccelerators
      c8i.large 24 GiB0
      c8i.xlarge 48 GiB0
      c8i.2xlarge 816 GiB0
      c8i.8xlarge 3264 GiB0
      c8i.12xlarge 4896 GiB0
      c8i.16xlarge 64128 GiB0
      c8i.24xlarge 96192 GiB0

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      c8i.4xlarge FAQs