c7i-flex.12xlarge by Amazon Web Services

c7i-flex.12xlarge is a Compute optimized [Intel processors] Gen7 12xlarge server offered by Amazon Web Services with 48 vCPUs, 96 GiB of memory and 0 GB of storage. The pricing starts at 0.2346 USD per hour.
48 vCPU
96 GiB Memory
Spare SCore
50,466
(All-cores)
2,063
(Single-core)

Specifications

Server Metadata

Vendor ID
aws
Name
c7i-flex.12xlarge
Description
Compute optimized [Intel processors] Gen7 12xlarge
Family
c7i-flex
Hw Virt
Status
active
Observed At
2026-09-19T19:18:45.095940

Availability

REGION / IDSPOTONDEMAND
(MY) / ap-southeast-5
0.6084 USD/h 1.9943 USD/h
(TH) / ap-southeast-7
0.650233 USD/h 1.9943 USD/h
Ohio (US) / us-east-2
0.548233 USD/h 2.0349 USD/h
Mumbai (IN) / ap-south-1
0.569133 USD/h 2.0349 USD/h
Northern Virgina (US) / us-east-1
0.66038 USD/h 2.0349 USD/h
Oregon (US) / us-west-2
0.755625 USD/h 2.0349 USD/h
Hyderabad (IN) / ap-south-2
0.733967 USD/h 2.035 USD/h
(MX) / mx-central-1
0.798933 USD/h 2.1366 USD/h
Stockholm (SE) / eu-north-1
0.319767 USD/h 2.1785 USD/h
Aragón (ES) / eu-south-2
0.2862 USD/h 2.1828 USD/h
Dublin (IE) / eu-west-1
1.002933 USD/h 2.1833 USD/h
Quebec (CA) / ca-central-1
0.755967 USD/h 2.2264 USD/h
Seoul (KR) / ap-northeast-2
0.48 USD/h 2.2982 USD/h
Taipei (TW) / ap-east-2
0.9121 USD/h 2.3054 USD/h
Frankfurt (DE) / eu-central-1
1.0881 USD/h 2.3222 USD/h
Jakarta (ID) / ap-southeast-3
0.368767 USD/h 2.346 USD/h
Singapore (SG) / ap-southeast-1
0.823067 USD/h 2.3466 USD/h
London (GB) / eu-west-2
0.81985 USD/h 2.4179 USD/h
Paris (FR) / eu-west-3
0.838667 USD/h 2.4179 USD/h
Milan (IT) / eu-south-1
0.30125 USD/h 2.418 USD/h
California (US) / us-west-1
0.75555 USD/h 2.5376 USD/h
Zurich (CH) / eu-central-2
0.677867 USD/h 2.5546 USD/h
Tokyo (JP) / ap-northeast-1
0.914367 USD/h 2.5616 USD/h
Hong Kong (HK) / ap-east-1
0.5275 USD/h 2.5855 USD/h
Sydney (AU) / ap-southeast-2
0.9426 USD/h 2.6573 USD/h
Cape Town (ZA) / af-south-1
0.445 USD/h 2.729 USD/h
(NZ) / ap-southeast-6
0.999433 USD/h 2.7902 USD/h
Sao Paulo (BR) / sa-east-1
0.472433 USD/h 3.1361 USD/h

Processor

vCPUs
48
Hypervisor
nitro
CPU Allocation
Dedicated
CPU Cores
24
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
1 MiB
CPU L1I Cache
32 KiB
CPU L1I Cache Total
768 KiB
CPU L2 Cache
2 MiB
CPU L2 Cache Total
48 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
24.5
Scalability
102.08

System Resources and Accelerators

MEMORY
Memory Amount
96 GiB
Memory Amount Actual
96 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
      9.375 Gbps
      Network Speed Max
      18.75 Gbps
      Network Storage Speed Baseline
      7.5 Gbps
      Network Storage Speed Max
      15 Gbps
      Inbound Traffic
      0 GB/month
      Outbound Traffic
      0 GB/month
      IPv4
      0

      Server Description

      A high-density, compute-optimized virtual server featuring advanced Intel matrix extensions and high-speed DDR5 memory for parallel processing workloads.

      Compute OptimizedGeneral Purpose

      The Amazon Web Services c7i-flex.12xlarge is a compute-optimized server featuring 48 vCPUs powered by an Intel Xeon 8488C processor running at 3.2 GHz. Built on the x86_64 architecture and managed by the Nitro hypervisor, it includes 96.0 GB of DDR5 memory at 5 GHz, yielding a 2.0 GB per vCPU ratio. The server lacks local storage and dedicated GPUs but supports advanced instruction sets like AVX-512 and Intel AMX. Benchmarks indicate strong performance, with a Passmark CPU score of 65056.32 and a static web serving throughput of 72.85 GB/sec. It also demonstrates top-tier efficiency in small LLM inference text generation at 353.0 tokens/sec. This instance is highly suited for compute-intensive workloads, including software compilation, database operations, and medium-scale machine learning inference.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      3.25Score
      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) 9,628,038 ops/sec 1,919,696 ops/sec 5.02 50.00% 50.00% +124.00%
      Redis RPS (pipeline=16, SET) 44,766,459 ops/sec 11,736,081 ops/sec 3.81 20.00% 20.00% +30.70%
      PassMark Memory Mark (composite) 2,378 2,418 0.984 10.00% 10.00% -0.16%
      Memory bandwidth (read, 16 MB ~ L3) 241,283 MB/sec 108,260 MB/sec 2.23 10.00% 10.00% +8.35%
      PassMark single-thread CPU 3,091 Mops/s 2,365 Mops/s 1.31 10.00% 10.00% +2.74%

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 2,152

      Geekbench Multi-Core

      Score: 19,030

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 65056
      Compression
      		 862699
      Encryption
      		 52713
      Extended Instructions
      		 66338
      Floating Point Maths
      		 171131
      Integer Maths
      		 240474
      Physics
      		 7612
      Prime Numbers
      		 380
      Single Threaded
      		 3091
      String Sorting
      		 115882

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 2378
      Database Operations
      		 24332
      Memory Latency
      		 72
      Memory Read Cached
      		 26840
      Memory Read Uncached
      		 9243
      Memory Write
      		 13460

      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.16xlarge 64128 GiB0

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      c7i-flex.12xlarge FAQs