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 0.2905 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
2026-10-26T20:36:17.714825

Availability

REGION / IDSPOTONDEMAND
(MY) / ap-southeast-5
0.629633 USD/h 2.6591 USD/h
(TH) / ap-southeast-7
0.7447 USD/h 2.6591 USD/h
Northern Virgina (US) / us-east-1
0.86008 USD/h 2.7132 USD/h
Ohio (US) / us-east-2
0.719433 USD/h 2.7132 USD/h
Mumbai (IN) / ap-south-1
0.7185 USD/h 2.7132 USD/h
Oregon (US) / us-west-2
0.97315 USD/h 2.7132 USD/h
Hyderabad (IN) / ap-south-2
2.218867 USD/h 2.7133 USD/h
(MX) / mx-central-1
0.797933 USD/h 2.8488 USD/h
Stockholm (SE) / eu-north-1
0.338633 USD/h 2.9047 USD/h
Aragón (ES) / eu-south-2
0.291 USD/h 2.9104 USD/h
Dublin (IE) / eu-west-1
1.300533 USD/h 2.9111 USD/h
Quebec (CA) / ca-central-1
0.888067 USD/h 2.9686 USD/h
Seoul (KR) / ap-northeast-2
0.45905 USD/h 3.0643 USD/h
Taipei (TW) / ap-east-2
0.745967 USD/h 3.0739 USD/h
Frankfurt (DE) / eu-central-1
1.384267 USD/h 3.0962 USD/h
Jakarta (ID) / ap-southeast-3
0.615167 USD/h 3.128 USD/h
Singapore (SG) / ap-southeast-1
1.145333 USD/h 3.1288 USD/h
London (GB) / eu-west-2
0.81385 USD/h 3.2239 USD/h
Paris (FR) / eu-west-3
0.832733 USD/h 3.2239 USD/h
Milan (IT) / eu-south-1
2.2484 USD/h 3.224 USD/h
California (US) / us-west-1
0.8071 USD/h 3.3835 USD/h
Zurich (CH) / eu-central-2
1.4881 USD/h 3.4061 USD/h
Tokyo (JP) / ap-northeast-1
1.5504 USD/h 3.4154 USD/h
Hong Kong (HK) / ap-east-1
0.9331 USD/h 3.4474 USD/h
Sydney (AU) / ap-southeast-2
1.088933 USD/h 3.5431 USD/h
Cape Town (ZA) / af-south-1
3.6387 USD/h 3.6387 USD/h
(NZ) / ap-southeast-6
1.110733 USD/h 3.7203 USD/h
Sao Paulo (BR) / sa-east-1
0.4924 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
46.56

System Resources and Accelerators

MEMORY
Memory Amount
128 GiB
Memory Amount Actual
128 GiB
Memory Generation
DDR5
Memory Speed
4800 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
      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

      3.2Score
      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) 9,957,807 ops/sec 1,919,289 ops/sec 5.3 50.00% 50.00% +130.00%
      Redis RPS (pipeline=16, SET) 46,288,336 ops/sec 11,728,058 ops/sec 3.8 20.00% 20.00% +31.00%
      PassMark Memory Mark (composite) 2,140 2,416 0.88 10.00% 10.00% -1.30%
      Memory bandwidth (read, 16 MB ~ L3) 207,776 MB/sec 108,466 MB/sec 1.9 10.00% 10.00% +6.60%
      PassMark single-thread CPU 2,915 Mops/s 2,365 Mops/s 1.2 10.00% 10.00% +1.80%

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 1,906

      Geekbench Multi-Core

      Score: 15,753

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 67,458
      Compression
      		 967,596
      Encryption
      		 59,825
      Extended Instructions
      		 66,115
      Floating Point Maths
      		 193,475
      Integer Maths
      		 271,752
      Physics
      		 6,600
      Prime Numbers
      		 363
      Single Threaded
      		 2,915
      String Sorting
      		 126,560

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 2,140
      Database Operations
      		 27,201
      Memory Latency
      		 84
      Memory Read Cached
      		 26,827
      Memory Read Uncached
      		 8,526
      Memory Write
      		 11,796

      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
      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