c8i-flex.8xlarge by Amazon Web Services

c8i-flex.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 0.1424 USD per hour.
32 vCPU
64 GiB Memory
Spare SCore
34,668
(All-cores)
2,131
(Single-core)

Specifications

Server Metadata

Vendor ID
aws
Name
c8i-flex.8xlarge
Description
Compute optimized [Intel processors] Gen8 8xlarge
Family
c8i-flex
Hw Virt
Status
active
Observed At
2026-10-28T19:56:30.279645

Availability

REGION / IDSPOTONDEMAND
(MY) / ap-southeast-5
0.409333 USD/h 1.396 USD/h
Hyderabad (IN) / ap-south-2
0.1424 USD/h 1.4243 USD/h
Ohio (US) / us-east-2
0.403867 USD/h 1.4243 USD/h
Mumbai (IN) / ap-south-1
0.541833 USD/h 1.4243 USD/h
Northern Virgina (US) / us-east-1
0.67028 USD/h 1.4243 USD/h
Oregon (US) / us-west-2
0.644125 USD/h 1.4243 USD/h
Aragón (ES) / eu-south-2
0.187533 USD/h 1.5282 USD/h
Dublin (IE) / eu-west-1
0.777633 USD/h 1.5283 USD/h
Quebec (CA) / ca-central-1
0.574233 USD/h 1.5584 USD/h
Seoul (KR) / ap-northeast-2
0.3904 USD/h 1.6088 USD/h
Frankfurt (DE) / eu-central-1
0.7438 USD/h 1.6254 USD/h
Singapore (SG) / ap-southeast-1
0.721267 USD/h 1.6424 USD/h
London (GB) / eu-west-2
0.6095 USD/h 1.6925 USD/h
Paris (FR) / eu-west-3
0.673433 USD/h 1.6925 USD/h
California (US) / us-west-1
0.5762 USD/h 1.7763 USD/h
Tokyo (JP) / ap-northeast-1
0.717067 USD/h 1.7931 USD/h
Sydney (AU) / ap-southeast-2
0.7479 USD/h 1.8602 USD/h
Cape Town (ZA) / af-south-1
0.470267 USD/h 1.9104 USD/h
(NZ) / ap-southeast-6
0.592533 USD/h 1.9531 USD/h
Sao Paulo (BR) / sa-east-1
0.508633 USD/h 2.1954 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, rep_good, nopl, xtopology, nonstop_tsc, cpuid, tsc_known_freq, pni, pclmulqdq, 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
      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

      Server Description

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

      Compute OptimizedGeneral Purpose

      Amazon Web Services c8i-flex.8xlarge is an x86_64 compute-optimized server powered by the Nitro hypervisor. It features a dedicated Intel Xeon 6975P-C processor running at 3.9 GHz with 32 vCPUs, 16 physical cores, and a 480 MB L3 cache. The instance is equipped with 64.0 GB of 7 GHz DDR5 memory, providing 2.0 GB per core, but lacks local storage and GPU accelerators. Network connectivity is established at an 8 Gbps baseline. Benchmark data indicates strong performance in single-core and multi-core operations, particularly in text processing, data decompression, and cryptographic tasks. It also delivers strong prompt processing speeds for small and medium LLM inference. This hardware profile is highly efficient for compute-bound workloads, including software compilation, static web serving, image processing, and lightweight machine learning inference, where local storage is not a primary requirement.

      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) 6,977,522 ops/sec 1,919,289 ops/sec 3.7 50.00% 50.00% +92.00%
      Redis RPS (pipeline=16, SET) 39,106,621 ops/sec 11,728,058 ops/sec 3.2 20.00% 20.00% +26.00%
      PassMark Memory Mark (composite) 2,342 2,416 0.96 10.00% 10.00% -0.41%
      Memory bandwidth (read, 16 MB ~ L3) 211,885 MB/sec 108,466 MB/sec 1.9 10.00% 10.00% +6.60%
      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: 2,153

      Geekbench Multi-Core

      Score: 17,709

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 51,553
      Compression
      		 636,882
      Encryption
      		 36,152
      Extended Instructions
      		 45,003
      Floating Point Maths
      		 119,772
      Integer Maths
      		 165,317
      Physics
      		 6,613
      Prime Numbers
      		 352
      Single Threaded
      		 3,262
      String Sorting
      		 83,821

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 2,342
      Database Operations
      		 16,207
      Memory Latency
      		 75
      Memory Read Cached
      		 29,019
      Memory Read Uncached
      		 10,459
      Memory Write
      		 10,915

      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

      INSTANCEvCPUsMEMORYAccelerators
      c8i-flex.large 24 GiB0
      c8i-flex.xlarge 48 GiB0
      c8i-flex.2xlarge 816 GiB0
      c8i-flex.4xlarge 1632 GiB0
      c8i-flex.12xlarge 4896 GiB0
      c8i-flex.16xlarge 64128 GiB0

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      c8i-flex.8xlarge FAQs