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 0.304 USD per hour.
64 vCPU
128 GiB Memory
Spare SCore
56,775
(All-cores)
1,907
(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
2026-09-10T22:38:15.528928

Availability

REGION / IDSPOTONDEMAND
(MY) / ap-southeast-5
1.103167 USD/h 2.6591 USD/h
(TH) / ap-southeast-7
0.747767 USD/h 2.6591 USD/h
Oregon (US) / us-west-2
0.953375 USD/h 2.7132 USD/h
Mumbai (IN) / ap-south-1
0.673933 USD/h 2.7132 USD/h
Ohio (US) / us-east-2
0.712533 USD/h 2.7132 USD/h
Northern Virgina (US) / us-east-1
0.96556 USD/h 2.7132 USD/h
Hyderabad (IN) / ap-south-2
2.7133 USD/h 2.7133 USD/h
(MX) / mx-central-1
0.8706 USD/h 2.8488 USD/h
Stockholm (SE) / eu-north-1
0.428667 USD/h 2.9047 USD/h
Aragón (ES) / eu-south-2
0.3274 USD/h 2.9104 USD/h
Dublin (IE) / eu-west-1
1.1324 USD/h 2.9111 USD/h
Quebec (CA) / ca-central-1
0.946567 USD/h 2.9686 USD/h
Seoul (KR) / ap-northeast-2
0.49085 USD/h 3.0643 USD/h
Taipei (TW) / ap-east-2
0.938533 USD/h 3.0739 USD/h
Frankfurt (DE) / eu-central-1
1.322667 USD/h 3.0962 USD/h
Jakarta (ID) / ap-southeast-3
1.5513 USD/h 3.128 USD/h
Singapore (SG) / ap-southeast-1
1.110267 USD/h 3.1288 USD/h
London (GB) / eu-west-2
0.866125 USD/h 3.2239 USD/h
Paris (FR) / eu-west-3
0.926233 USD/h 3.2239 USD/h
Milan (IT) / eu-south-1
3.224 USD/h 3.224 USD/h
California (US) / us-west-1
0.90285 USD/h 3.3835 USD/h
Zurich (CH) / eu-central-2
2.388867 USD/h 3.4061 USD/h
Tokyo (JP) / ap-northeast-1
1.118433 USD/h 3.4154 USD/h
Hong Kong (HK) / ap-east-1
2.255067 USD/h 3.4474 USD/h
Sydney (AU) / ap-southeast-2
1.1267 USD/h 3.5431 USD/h
Cape Town (ZA) / af-south-1
3.6387 USD/h 3.6387 USD/h
(NZ) / ap-southeast-6
1.333067 USD/h 3.7203 USD/h
Sao Paulo (BR) / sa-east-1
0.740467 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 high-frequency, x86_64 compute-optimized server featuring DDR5 memory, advanced vector extensions, and strong database and compilation performance.

      Compute Optimized

      Amazon Web Services c7i-flex.16xlarge is an x86_64 compute-optimized instance featuring an Intel Xeon 8488C processor with 64 vCPUs, 32 physical cores, and 128.0 GB of DDR5 RAM. Operating at 3.2 GHz, this Nitro-based server delivers strong memory read bandwidth, reaching 4612.53 GB/sec for cached small blocks. It lacks local storage and GPUs, relying on a 12 Gbps baseline network connection. Benchmark data shows strong performance in software compilation, cryptography, and database operations, with Redis SET performance reaching 69.84 million operations per second. The server's hardware profile makes it highly cost-efficient for compute-intensive tasks, including static web serving, multi-threaded decompression, and medium-scale LLM prompt processing.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      3.23Score
      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 1,917,397 ops/sec 5.19 50.00% 50.00% +128.00%
      Redis RPS (pipeline=16, SET) 46,288,336 ops/sec 11,681,410 ops/sec 3.96 20.00% 20.00% +31.70%
      PassMark Memory Mark (composite) 2,140 2,418 0.885 10.00% 10.00% -1.21%
      Memory bandwidth (read, 16 MB ~ L3) 207,776 MB/sec 108,140 MB/sec 1.92 10.00% 10.00% +6.74%
      PassMark single-thread CPU 2,915 Mops/s 2,365 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