c8i.8xlarge by Amazon Web Services

c8i.8xlarge is a Compute optimized [Intel processors] Gen8 8xlarge server offered by Amazon Web Services with 32 vCPUs, 64 GiB of memory and 0 GB of storage. The pricing starts at 0.1499 USD per hour.
32 vCPU
64 GiB Memory
Spare SCore
34,591
(All-cores)
2,128
(Single-core)

Specifications

Server Metadata

Vendor ID
aws
Name
c8i.8xlarge
Description
Compute optimized [Intel processors] Gen8 8xlarge
Family
c8i
Hw Virt
Average Time To Start
6
Status
active
Observed At
2026-10-28T23:25:16.744925

Availability

REGION / IDSPOTONDEMAND
(MY) / ap-southeast-5
0.4274 USD/h 1.4694 USD/h
Hyderabad (IN) / ap-south-2
0.1499 USD/h 1.4994 USD/h
Ohio (US) / us-east-2
0.404533 USD/h 1.4994 USD/h
Mumbai (IN) / ap-south-1
0.551733 USD/h 1.4994 USD/h
Northern Virgina (US) / us-east-1
0.8228 USD/h 1.4994 USD/h
Oregon (US) / us-west-2
0.687325 USD/h 1.4994 USD/h
Stockholm (SE) / eu-north-1
0.425033 USD/h 1.6053 USD/h
Aragón (ES) / eu-south-2
0.225733 USD/h 1.6086 USD/h
Dublin (IE) / eu-west-1
0.9019 USD/h 1.6088 USD/h
Quebec (CA) / ca-central-1
0.565867 USD/h 1.6405 USD/h
Seoul (KR) / ap-northeast-2
0.3513 USD/h 1.6934 USD/h
Frankfurt (DE) / eu-central-1
0.719433 USD/h 1.711 USD/h
Singapore (SG) / ap-southeast-1
0.7906 USD/h 1.7288 USD/h
London (GB) / eu-west-2
0.5189 USD/h 1.7816 USD/h
Paris (FR) / eu-west-3
0.592833 USD/h 1.7816 USD/h
California (US) / us-west-1
0.6209 USD/h 1.8698 USD/h
Tokyo (JP) / ap-northeast-1
0.740833 USD/h 1.8875 USD/h
Sydney (AU) / ap-southeast-2
0.8727 USD/h 1.9581 USD/h
Cape Town (ZA) / af-south-1
0.5106 USD/h 2.011 USD/h
(NZ) / ap-southeast-6
0.3301 USD/h 2.056 USD/h
Sao Paulo (BR) / sa-east-1
0.87275 USD/h 2.3109 USD/h

Processor

vCPUs
32
Hypervisor
nitro
CPU Allocation
Dedicated
CPU Cores
16
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
768 KiB
CPU L1I Cache
64 KiB
CPU L1I Cache Total
1 MiB
CPU L2 Cache
2 MiB
CPU L2 Cache Total
32 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
16.3
Scalability
50.94

System Resources and Accelerators

MEMORY
Memory Amount
64 GiB
Memory Amount Actual
64 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
      15 Gbps
      Network Speed Max
      15 Gbps
      Network Storage Speed Baseline
      10 Gbps
      Network Storage Speed Max
      10 Gbps
      Inbound Traffic
      0 GB/month
      Outbound Traffic
      0 GB/month
      IPv4
      0

      Server Description

      A compute-optimized instance featuring dedicated Intel Xeon processors, DDR5 memory, and advanced matrix extensions for high-density CPU workloads.

      Compute Optimized

      Amazon Web Services c8i.8xlarge is a compute-optimized instance featuring 32 vCPUs and 16 physical cores powered by an Intel Xeon 6975P-C processor running at 3.9 GHz. It includes 64.0 GB of DDR5 memory at 7 GHz, a 480 MB L3 cache, and a 15 Gbps baseline network speed, with no local storage or GPUs. The instance delivers top-tier performance in small-model LLM text generation and strong results in data compression, single-core Geekbench tests, and static web serving. It is suited for compute-intensive workloads, including web serving, software compilation, and small-to-medium model machine learning inference.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      2.7Score
      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) 7,097,866 ops/sec 1,919,289 ops/sec 3.7 50.00% 50.00% +92.00%
      Redis RPS (pipeline=16, SET) 39,428,231 ops/sec 11,728,058 ops/sec 3.2 20.00% 20.00% +26.00%
      PassMark Memory Mark (composite) 2,725 2,416 1.1 10.00% 10.00% +0.96%
      Memory bandwidth (read, 16 MB ~ L3) 236,551 MB/sec 108,466 MB/sec 2.2 10.00% 10.00% +8.20%
      PassMark single-thread CPU 3,262 Mops/s 2,365 Mops/s 1.4 10.00% 10.00% +3.40%

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 2,187

      Geekbench Multi-Core

      Score: 18,229

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 51,719
      Compression
      		 637,751
      Encryption
      		 36,253
      Extended Instructions
      		 46,056
      Floating Point Maths
      		 119,519
      Integer Maths
      		 165,072
      Physics
      		 6,798
      Prime Numbers
      		 350
      Single Threaded
      		 3,262
      String Sorting
      		 83,955

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 2,725
      Database Operations
      		 17,348
      Memory Latency
      		 66
      Memory Read Cached
      		 27,900
      Memory Read Uncached
      		 17,823
      Memory Write
      		 11,408

      Stress-ng Stressors

      CPU integerSingleMultiScaling
      atomic
      		 194.39 156.84 0.81×
      bitops
      		 163,816 3,050,732 18.62×
      branch
      		 153,589 4,015,082 26.14×
      funccall
      		 851.31 17,652 20.74×
      funcret
      		 14,143 357,655 25.29×
      hash
      		 188,570 4,443,489 23.56×
      intmath
      		 70,573 1,388,950 19.68×
      nop
      		 287,947 4,983,969 17.31×
      prime
      		 523,779 11,059,038 21.11×
      rotate
      		 108,413 3,052,637 28.16×
      str
      		 985,910 22,452,901 22.77×
      wcs
      		 788,932 14,328,119 18.16×
      CryptographySingleMultiScaling
      crypt
      		 3,710 75,466 20.34×
      CompressionSingleMultiScaling
      jpeg
      		 916.02 18,896 20.63×
      zlib
      		 57.01 1,783 31.28×
      HypervisorSingleMultiScaling
      clock
      		 50,041 491,810 9.83×
      clone
      		 469.58 8,493 18.09×
      context
      		 5,804 155,094 26.72×
      cpu-sched
      		 68.17 1,932 28.34×
      eventfd
      		 35,617 1,688,718 47.41×
      fault
      		 35,290 307,310 8.71×
      fork
      		 5,046 110,138 21.83×
      getrandom
      		 63,889 1,527,217 23.90×
      hrtimers
      		 259,070 4,353,324 16.80×
      mprotect
      		 1,015,226 12,357,925 12.17×
      mtx
      		 20,626,327 1,024,000,159 49.65×
      munmap
      		 4,172 90,987 21.81×
      null
      		 999,482 26,201,820 26.22×
      pipe
      		 730,429 25,393,279 34.76×
      priv-instr
      		 898,431 15,537,607 17.29×
      resched
      		 15,070,701 3,537,352 0.23×
      switch
      		 81,273 13,728,246 168.91×
      timermix
      		 197,420 5,594,277 28.34×
      tlb-shootdown
      		 6,615 77,695 11.75×
      tsc
      		 634,038 16,522,497 26.06×
      usersyscall
      		 762,410 14,154,972 18.57×
      vdso
      		 95,628,995 2,383,765,130 24.93×
      vfork
      		 24,309 210,638 8.67×
      x86syscall
      		 10,975,686 299,359,312 27.27×
      yield
      		 39,039,404 45,501,267 1.17×
      zero
      		 7,002,278 187,205,207 26.73×
      CPU float/SIMDSingleMultiScaling
      eigen
      		 18,094 364,080 20.12×
      expmath
      		 3,848 91,405 23.75×
      fma
      		 1,315,434 29,287,274 22.26×
      fp
      		 243.42 5,458 22.42×
      fractal
      		 7.6 169.22 22.27×
      hyperbolic
      		 4,438 106,249 23.94×
      logmath
      		 5,683 146,801 25.83×
      matrix
      		 5,517 112,570 20.40×
      matrix-3d
      		 610.05 6,759 11.08×
      monte-carlo
      		 322.76 8,367 25.92×
      mpfr
      		 1,908 39,098 20.49×
      powmath
      		 2,159 53,484 24.77×
      trig
      		 3,000 62,982 21.00×
      veccmp
      		 25,726 501,372 19.49×
      vecfp
      		 1,640 33,971 20.72×
      vecmath
      		 4,280 96,504 22.55×
      vecshuf
      		 888.3 16,378 18.44×
      vecwide
      		 35,911 669,081 18.63×
      AlgorithmsSingleMultiScaling
      bitonicsort
      		 10.6 211.59 19.96×
      bsearch
      		 342.38 6,898 20.15×
      bubblesort
      		 1.2 25.6 21.33×
      fibsearch
      		 336.14 6,705 19.95×
      heapsort
      		 11 244.99 22.27×
      hsearch
      		 9,541 181,969 19.07×
      insertionsort
      		 14 224 16.00×
      malloc
      		 2,984,028 45,401,368 15.21×
      mcontend
      		 125.07 6,187 49.47×
      mergesort
      		 33.6 781.97 23.27×
      qsort
      		 24 544.17 22.67×
      skiplist
      		 6,996 175,619 25.10×
      tree
      		 1.6 31.98 19.99×
      MemorySingleMultiScaling
      cache
      		 327,896 3,261,795 9.95×
      cachehammer
      		 176,569 4,417,071 25.02×
      cacheline
      		 67.57 2,941 43.53×
      l1cache
      		 814.45 6,752 8.29×
      memcpy
      		 755.96 12,555 16.61×
      memrate
      		 0.13 4.25 32.69×
      memthrash
      		 207.57 1,140 5.49×
      ptr-chase
      		 26,953,209 264,340,707 9.81×
      spinmem
      		 225.99 1,516 6.71×
      stream
      		 4.43 1,046 236.16×
      vm
      		 146,299 296,018 2.02×

      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.12xlarge 4896 GiB0
      c8i.16xlarge 64128 GiB0
      c8i.24xlarge 96192 GiB0

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      c8i.8xlarge FAQs