c8i.32xlarge by Amazon Web Services

c8i.32xlarge is a Compute optimized [Intel processors] Gen8 32xlarge server offered by Amazon Web Services with 128 vCPUs, 256 GiB of memory and 0 GB of storage. The pricing starts at 0.5878 USD per hour.
128 vCPU
256 GiB Memory
Spare SCore
138,340
(All-cores)
2,116
(Single-core)

Specifications

Server Metadata

Vendor ID
aws
Name
c8i.32xlarge
Description
Compute optimized [Intel processors] Gen8 32xlarge
Family
c8i
Hw Virt
Average Time To Start
6.75
Status
active
Observed At
2026-10-30T19:00:34.233055

Availability

REGION / IDSPOTONDEMAND
(MY) / ap-southeast-5
0.916633 USD/h 5.8778 USD/h
Hyderabad (IN) / ap-south-2
0.5997 USD/h 5.9974 USD/h
Mumbai (IN) / ap-south-1
1.280033 USD/h 5.9974 USD/h
Ohio (US) / us-east-2
1.8931 USD/h 5.9974 USD/h
Northern Virgina (US) / us-east-1
2.6342 USD/h 5.9974 USD/h
Oregon (US) / us-west-2
2.526225 USD/h 5.9974 USD/h
Stockholm (SE) / eu-north-1
1.593367 USD/h 6.4211 USD/h
Aragón (ES) / eu-south-2
2.4826 USD/h 6.4346 USD/h
Dublin (IE) / eu-west-1
2.7517 USD/h 6.4352 USD/h
Quebec (CA) / ca-central-1
1.6745 USD/h 6.5619 USD/h
Seoul (KR) / ap-northeast-2
1.22155 USD/h 6.7738 USD/h
Frankfurt (DE) / eu-central-1
1.985233 USD/h 6.8442 USD/h
Singapore (SG) / ap-southeast-1
2.582433 USD/h 6.9152 USD/h
London (GB) / eu-west-2
0.9622 USD/h 7.1264 USD/h
Paris (FR) / eu-west-3
1.4954 USD/h 7.1264 USD/h
California (US) / us-west-1
1.31435 USD/h 7.479 USD/h
Tokyo (JP) / ap-northeast-1
1.280867 USD/h 7.5501 USD/h
Sydney (AU) / ap-southeast-2
2.469333 USD/h 7.8323 USD/h
Cape Town (ZA) / af-south-1
1.4724 USD/h 8.0442 USD/h
(NZ) / ap-southeast-6
0.8581 USD/h 8.224 USD/h
Sao Paulo (BR) / sa-east-1
0.9244 USD/h 9.2435 USD/h

Processor

vCPUs
128
Hypervisor
nitro
CPU Allocation
Dedicated
CPU Cores
64
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
3 MiB
CPU L1I Cache
64 KiB
CPU L1I Cache Total
4 MiB
CPU L2 Cache
2 MiB
CPU L2 Cache Total
128 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
65.4
Scalability
51.09

System Resources and Accelerators

MEMORY
Memory Amount
256 GiB
Memory Amount Actual
256 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
      50 Gbps
      Network Speed Max
      50 Gbps
      Network Storage Speed Baseline
      40 Gbps
      Network Storage Speed Max
      40 Gbps
      Inbound Traffic
      0 GB/month
      Outbound Traffic
      0 GB/month
      IPv4
      0

      CPU and System Topology

      Server Description

      A high-density, compute-optimized platform featuring advanced matrix extensions and high-speed DDR5 memory for demanding parallel processing workloads.

      Compute Optimized

      Amazon Web Services c8i.32xlarge is an x86_64 compute-optimized instance featuring 128 dedicated vCPUs (64 physical cores) powered by an Intel Xeon 6975P-C processor running at 3.9 GHz. It is equipped with 256.0 GB of DDR5 memory at 7 GHz, a 480 MB L3 cache, and a 50 Gbps baseline network bandwidth, though it lacks local storage. The instance delivers top-tier multi-core CPU performance, memory read bandwidth, and database operation speeds, supported by advanced instruction sets like AVX-512 and Intel AMX. While single-core performance is average, its high core density and memory bandwidth make it highly cost-efficient for parallelized, compute-heavy tasks. It is optimized for workloads such as software compilation, ray tracing, database operations, and medium-model LLM inference.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      7.2Score
      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) 25,339,169 ops/sec 1,919,289 ops/sec 13 50.00% 50.00% +260.00%
      Redis RPS (pipeline=16, SET) 141,367,103 ops/sec 11,728,058 ops/sec 12 20.00% 20.00% +64.00%
      PassMark Memory Mark (composite) 2,807 2,416 1.2 10.00% 10.00% +1.80%
      Memory bandwidth (read, 16 MB ~ L3) 461,150 MB/sec 108,466 MB/sec 4.2 10.00% 10.00% +15.00%
      PassMark single-thread CPU 3,257 Mops/s 2,365 Mops/s 1.4 10.00% 10.00% +3.40%

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 2,205

      Geekbench Multi-Core

      Score: 22,872

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 122,859
      Compression
      		 2,535,875
      Encryption
      		 144,442
      Extended Instructions
      		 176,803
      Floating Point Maths
      		 477,955
      Integer Maths
      		 660,063
      Physics
      		 18,846
      Prime Numbers
      		 1,085
      Single Threaded
      		 3,257
      String Sorting
      		 329,842

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 2,807
      Database Operations
      		 34,598
      Memory Latency
      		 65
      Memory Read Cached
      		 26,631
      Memory Read Uncached
      		 17,830
      Memory Write
      		 11,733

      Stress-ng Stressors

      CPU integerSingleMultiScaling
      atomic
      		 165.88 27.81 0.17×
      bitops
      		 163,480 12,170,097 74.44×
      branch
      		 153,122 16,051,262 104.83×
      funccall
      		 848.87 70,344 82.87×
      funcret
      		 13,902 1,367,888 98.40×
      hash
      		 184,379 17,793,390 96.50×
      intmath
      		 70,388 5,570,877 79.15×
      nop
      		 287,353 19,909,044 69.28×
      prime
      		 521,615 44,638,836 85.58×
      rotate
      		 108,158 12,082,722 111.71×
      str
      		 1,033,629 84,647,730 81.89×
      wcs
      		 793,612 57,772,159 72.80×
      CryptographySingleMultiScaling
      crypt
      		 3,698 295,645 79.95×
      CompressionSingleMultiScaling
      jpeg
      		 888.96 73,357 82.52×
      zlib
      		 60.38 6,871 113.79×
      HypervisorSingleMultiScaling
      clock
      		 34,499 373,833 10.84×
      clone
      		 436.07 24,334 55.80×
      context
      		 5,796 619,712 106.93×
      cpu-sched
      		 64.2 7,214 112.37×
      eventfd
      		 168,301 4,289,123 25.48×
      fault
      		 34,135 300,553 8.80×
      fork
      		 4,380 74,883 17.10×
      getrandom
      		 63,590 6,108,418 96.06×
      hrtimers
      		 173,937 14,999,407 86.23×
      mprotect
      		 834,528 15,551,248 18.63×
      mtx
      		 18,897,573 3,740,575,430 197.94×
      munmap
      		 3,368 99,035 29.41×
      null
      		 996,562 103,701,691 104.06×
      pipe
      		 690,006 102,082,730 147.94×
      priv-instr
      		 895,097 8,164,927 9.12×
      resched
      		 13,592,418 24,956,159 1.84×
      switch
      		 290,164 49,297,752 169.90×
      timermix
      		 201,189 21,916,579 108.94×
      tlb-shootdown
      		 10,322 197,223 19.11×
      tsc
      		 632,178 66,058,647 104.49×
      usersyscall
      		 761,138 8,039,866 10.56×
      vdso
      		 95,344,433 9,541,685,387 100.08×
      vfork
      		 20,832 113,105 5.43×
      x86syscall
      		 10,937,814 1,197,310,285 109.47×
      yield
      		 212,873,397 215,373,879 1.01×
      zero
      		 6,980,138 735,325,050 105.35×
      CPU float/SIMDSingleMultiScaling
      eigen
      		 18,016 1,495,174 82.99×
      expmath
      		 3,835 346,227 90.28×
      fma
      		 1,310,869 115,579,581 88.17×
      fp
      		 242.4 21,805 89.95×
      fractal
      		 7.6 675.85 88.93×
      hyperbolic
      		 4,462 423,359 94.87×
      logmath
      		 5,667 586,622 103.52×
      matrix
      		 5,600 425,969 76.07×
      matrix-3d
      		 610.4 16,805 27.53×
      monte-carlo
      		 322.66 34,047 105.52×
      mpfr
      		 1,907 152,147 79.77×
      powmath
      		 2,152 213,869 99.38×
      trig
      		 2,974 253,545 85.26×
      veccmp
      		 26,819 2,001,809 74.64×
      vecfp
      		 1,656 135,726 81.94×
      vecmath
      		 4,263 385,788 90.50×
      vecshuf
      		 887.69 65,503 73.79×
      vecwide
      		 36,851 2,622,924 71.18×
      AlgorithmsSingleMultiScaling
      bitonicsort
      		 10.6 845.58 79.77×
      bsearch
      		 341.28 27,350 80.14×
      bubblesort
      		 1.2 102.4 85.33×
      fibsearch
      		 335.99 25,524 75.97×
      heapsort
      		 10.8 964.36 89.29×
      hsearch
      		 9,556 727,953 76.18×
      insertionsort
      		 14 895 63.93×
      malloc
      		 2,943,464 118,268,207 40.18×
      mcontend
      		 104.68 22,795 217.76×
      mergesort
      		 33.4 2,995 89.67×
      qsort
      		 23.8 2,189 91.99×
      skiplist
      		 6,990 690,744 98.82×
      tree
      		 1.6 102.28 63.92×
      MemorySingleMultiScaling
      cache
      		 301,011 7,449,556 24.75×
      cachehammer
      		 168,116 9,603,452 57.12×
      cacheline
      		 46.37 3,760 81.09×
      l1cache
      		 805.72 23,888 29.65×
      memcpy
      		 762.18 50,200 65.86×
      memrate
      		 0.13 14.47 111.31×
      memthrash
      		 353.83 2,108 5.96×
      ptr-chase
      		 27,096,448 854,158,672 31.52×
      spinmem
      		 226.6 5,979 26.39×
      stream
      		 2.29 4,267 1863.27×
      vm
      		 137,458 308,461 2.24×

      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.4xlarge 1632 GiB0
      c8i.8xlarge 3264 GiB0
      c8i.12xlarge 4896 GiB0
      c8i.16xlarge 64128 GiB0

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      c8i.32xlarge FAQs