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c7i-flex.16xlarge by Amazon Web Services

c7i-flex.16xlarge is a Compute optimized [Intel processors] Gen7 16xlarge server offered by Amazon Web Services with 64 vCPUs, 128 GiB of memory and 0 GB of storage. The pricing starts at 0.3074 USD per hour.
64 vCPU
128 GiB Memory
Spare SCore
56775
(All-cores)
1907
(Single-core)

Specifications

Server Metadata

Vendor ID
aws
Name
c7i-flex.16xlarge
Description
Compute optimized [Intel processors] Gen7 16xlarge
Family
c7i-flex
Hw Virt
Status
active
Observed At
2026-07-27T21:14:15.366926

Availability

REGION / IDSPOTONDEMAND
Milan (IT) / eu-south-1
1.3032 USD/h -
(MY) / ap-southeast-5
0.726967 USD/h 2.6591 USD/h
(TH) / ap-southeast-7
0.816233 USD/h 2.6591 USD/h
Mumbai (IN) / ap-south-1
0.5103 USD/h 2.7132 USD/h
Ohio (US) / us-east-2
0.7387 USD/h 2.7132 USD/h
Oregon (US) / us-west-2
0.92715 USD/h 2.7132 USD/h
Northern Virgina (US) / us-east-1
0.92036 USD/h 2.7132 USD/h
Hyderabad (IN) / ap-south-2
1.694667 USD/h 2.7133 USD/h
(MX) / mx-central-1
0.8876 USD/h 2.8488 USD/h
Stockholm (SE) / eu-north-1
0.418233 USD/h 2.9047 USD/h
Aragón (ES) / eu-south-2
0.623467 USD/h 2.9104 USD/h
Dublin (IE) / eu-west-1
1.207 USD/h 2.9111 USD/h
Quebec (CA) / ca-central-1
0.6774 USD/h 2.9686 USD/h
Seoul (KR) / ap-northeast-2
0.558 USD/h 3.0643 USD/h
Taipei (TW) / ap-east-2
0.602433 USD/h 3.0739 USD/h
Frankfurt (DE) / eu-central-1
1.168 USD/h 3.0962 USD/h
Jakarta (ID) / ap-southeast-3
1.017 USD/h 3.128 USD/h
Singapore (SG) / ap-southeast-1
1.0906 USD/h 3.1288 USD/h
Paris (FR) / eu-west-3
0.9924 USD/h 3.2239 USD/h
London (GB) / eu-west-2
1.032333 USD/h 3.2239 USD/h
California (US) / us-west-1
1.1213 USD/h 3.3835 USD/h
Zurich (CH) / eu-central-2
1.5233 USD/h 3.4061 USD/h
Tokyo (JP) / ap-northeast-1
1.166867 USD/h 3.4154 USD/h
Hong Kong (HK) / ap-east-1
0.867 USD/h 3.4474 USD/h
Sydney (AU) / ap-southeast-2
1.1756 USD/h 3.5431 USD/h
Cape Town (ZA) / af-south-1
3.6387 USD/h 3.6387 USD/h
(NZ) / ap-southeast-6
1.191133 USD/h 3.7203 USD/h
Sao Paulo (BR) / sa-east-1
0.4834 USD/h 4.1815 USD/h

Processor

vCPUs
64
Hypervisor
nitro
CPU Allocation
Dedicated
CPU Cores
32
CPU Speed
3.2 GHz
CPU Architecture
x86_64
CPU Manufacturer
Intel
CPU Family
Xeon
CPU Model
8488C
CPU L1D Cache
48 KiB
CPU L1D Cache Total
2 MiB
CPU L1I Cache
32 KiB
CPU L1I Cache Total
1 MiB
CPU L2 Cache
2 MiB
CPU L2 Cache Total
64 MiB
CPU L3 Cache
105 MiB
CPU L3 Cache Total
105 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, 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, cldemote, movdiri, movdir64b, md_clear, serialize, amx_bf16, avx512_fp16, amx_tile, amx_int8, flush_l1d, arch_capabilities
Ecpus
29.8
Scalability
93.12

System Resources and Accelerators

MEMORY
Memory Amount
128 GiB
Memory Amount Actual
128 GiB
Memory Generation
DDR5
Memory Speed
4800 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
      12.5 Gbps
      Network Speed Max
      25 Gbps
      Network Storage Speed Baseline
      10 Gbps
      Network Storage Speed Max
      20 Gbps
      Inbound Traffic
      0 GB/month
      Outbound Traffic
      0 GB/month
      IPv4
      0

      Server Description

      A cost-efficient, compute-optimized virtual server featuring sixty-four vCPUs, high-speed DDR5 memory, and advanced Intel matrix acceleration for demanding workloads.

      Compute OptimizedGeneral Purpose

      The Amazon Web Services c7i-flex.16xlarge is a compute-optimized server utilizing the Nitro hypervisor and an x86_64 Intel Xeon 8488C processor. Operating at 3.2 GHz, it provides 64 vCPUs, 32 physical cores, and 128.0 GB of DDR5 memory running at 5 GHz. The processor features a 105 MB L3 cache and supports Intel Advanced Matrix Extensions (AMX) and AVX-512. This instance does not include local storage or GPUs. Benchmark results show strong performance, with memory read bandwidth reaching 4612.53 GB/sec for small blocks and Redis SET operations performing at 69.84 million operations per second. It also demonstrates capable CPU-based LLM inference, processing 227.81 tokens per second on a 7B model. The c7i-flex.16xlarge is designed as a cost-efficient option for compute-heavy workloads, making it highly suitable for software compilation, database operations, web serving, and multi-threaded data processing.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      3.26Score
      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) 9,957,807 ops/sec 1,896,415 ops/sec 5.25 50.00% 50.00% +129.00%
      Redis RPS (pipeline=16, SET) 46,288,336 ops/sec 11,539,523 ops/sec 4.01 20.00% 20.00% +32.00%
      PassMark Memory Mark (composite) 2,140 2,411 0.888 10.00% 10.00% -1.18%
      Memory bandwidth (read, 16 MB ~ L3) 207,776 MB/sec 107,368 MB/sec 1.94 10.00% 10.00% +6.85%
      PassMark single-thread CPU 2,915 Mops/s 2,363 Mops/s 1.23 10.00% 10.00% +2.09%

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 1,906

      Geekbench Multi-Core

      Score: 15,753

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 67458
      Compression
      		 967596
      Encryption
      		 59825
      Extended Instructions
      		 66115
      Floating Point Maths
      		 193475
      Integer Maths
      		 271752
      Physics
      		 6600
      Prime Numbers
      		 363
      Single Threaded
      		 2915
      String Sorting
      		 126560

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 2140
      Database Operations
      		 27201
      Memory Latency
      		 84
      Memory Read Cached
      		 26827
      Memory Read Uncached
      		 8526
      Memory Write
      		 11796

      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

      INSTANCEvCPUsMEMORYGPUs
      c7i-flex.large 24 GiB0
      c7i-flex.xlarge 48 GiB0
      c7i-flex.2xlarge 816 GiB0
      c7i-flex.4xlarge 1632 GiB0
      c7i-flex.8xlarge 3264 GiB0
      c7i-flex.12xlarge 4896 GiB0

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      c7i-flex.16xlarge FAQs