r7i.12xlarge by Amazon Web Services

r7i.12xlarge is a Memory optimized [Intel processors] Gen7 12xlarge server offered by Amazon Web Services with 48 vCPUs, 384 GiB of memory and 0 GB of storage. The pricing starts at 0.3276 USD per hour.
48 vCPU
384 GiB Memory
Spare SCore
42,434
(All-cores)
2,007
(Single-core)

Specifications

Server Metadata

Vendor ID
aws
Name
r7i.12xlarge
Description
Memory optimized [Intel processors] Gen7 12xlarge
Family
r7i
Hw Virt
Status
active
Observed At
2026-10-24T01:04:09.772090

Availability

REGION / IDSPOTONDEMAND
Ohio (US) / us-east-2
0.649033 USD/h 3.1752 USD/h
Oregon (US) / us-west-2
1.30515 USD/h 3.1752 USD/h
Northern Virgina (US) / us-east-1
1.7726 USD/h 3.1752 USD/h
(MY) / ap-southeast-5
0.885133 USD/h 3.2558 USD/h
(TH) / ap-southeast-7
0.9459 USD/h 3.2558 USD/h
Hyderabad (IN) / ap-south-2
0.3276 USD/h 3.276 USD/h
Mumbai (IN) / ap-south-1
1.165867 USD/h 3.276 USD/h
(MX) / mx-central-1
0.9244 USD/h 3.3341 USD/h
Stockholm (SE) / eu-north-1
0.555133 USD/h 3.3768 USD/h
Taipei (TW) / ap-east-2
1.134133 USD/h 3.4474 USD/h
Quebec (CA) / ca-central-1
1.1987 USD/h 3.4776 USD/h
California (US) / us-west-1
0.77765 USD/h 3.528 USD/h
Aragón (ES) / eu-south-2
0.373167 USD/h 3.5532 USD/h
Dublin (IE) / eu-west-1
1.6497 USD/h 3.5532 USD/h
Milan (IT) / eu-south-1
1.022967 USD/h 3.7296 USD/h
London (GB) / eu-west-2
1.24605 USD/h 3.7296 USD/h
Paris (FR) / eu-west-3
1.2436 USD/h 3.7296 USD/h
Melbourne (AU) / ap-southeast-4
0.8792 USD/h 3.8052 USD/h
Sydney (AU) / ap-southeast-2
1.769333 USD/h 3.8052 USD/h
Seoul (KR) / ap-northeast-2
1.0724 USD/h 3.8304 USD/h
Jakarta (ID) / ap-southeast-3
1.070967 USD/h 3.8304 USD/h
Tokyo (JP) / ap-northeast-1
1.326 USD/h 3.8304 USD/h
Singapore (SG) / ap-southeast-1
1.4102 USD/h 3.8304 USD/h
Frankfurt (DE) / eu-central-1
1.511333 USD/h 3.8304 USD/h
Osaka (JP) / ap-northeast-3
1.590767 USD/h 3.8304 USD/h
(NZ) / ap-southeast-6
1.6212 USD/h 3.9955 USD/h
Sao Paulo (BR) / sa-east-1
1.697533 USD/h 5.0652 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, arch_perfmon, rep_good, nopl, xtopology, nonstop_tsc, cpuid, aperfmperf, tsc_known_freq, pni, pclmulqdq, monitor, 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
21.1
Scalability
43.96

System Resources and Accelerators

MEMORY
Memory Amount
384 GiB
Memory Amount Actual
384 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
      18.75 Gbps
      Network Speed Max
      18.75 Gbps
      Network Storage Speed Baseline
      15 Gbps
      Network Storage Speed Max
      15 Gbps
      Inbound Traffic
      0 GB/month
      Outbound Traffic
      0 GB/month
      IPv4
      0

      Server Description

      A memory-optimized x86 server featuring high-speed DDR5 RAM and advanced matrix extensions for memory-intensive enterprise workloads and database operations.

      Memory OptimizedGeneral Purpose

      Amazon Web Services r7i.12xlarge is an x86_64 memory-optimized server instance featuring 48 vCPUs and 24 physical cores powered by an Intel Xeon 8488C processor running at 3.2 GHz. It is equipped with 384.0 GB of DDR5 RAM operating at 5 GHz, providing a 1:8 vCPU-to-RAM ratio, but lacks local storage and dedicated GPUs. The instance utilizes the Nitro hypervisor and delivers a baseline network bandwidth of 19 Gbps. Benchmark data shows strong performance in Geekbench multi-core tests, software compilation, and static web serving, alongside average performance in large-block memory bandwidth and multi-core stress tests. Supported by Intel AMX and AVX-512 extensions, it demonstrates strong efficiency in small-to-medium LLM inference. This hardware profile is suited for memory-intensive database operations, caching layers, and enterprise applications requiring substantial memory capacity without local storage requirements.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      2.8Score
      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) 8,302,587 ops/sec 1,919,289 ops/sec 4.4 50.00% 50.00% +110.00%
      Redis RPS (pipeline=16, SET) 38,369,153 ops/sec 11,728,058 ops/sec 3.2 20.00% 20.00% +26.00%
      PassMark Memory Mark (composite) 2,215 2,416 0.92 10.00% 10.00% -0.83%
      Memory bandwidth (read, 16 MB ~ L3) 195,083 MB/sec 108,466 MB/sec 1.8 10.00% 10.00% +6.10%
      PassMark single-thread CPU 3,017 Mops/s 2,365 Mops/s 1.2 10.00% 10.00% +1.80%

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 2,054

      Geekbench Multi-Core

      Score: 17,914

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 58,892
      Compression
      		 762,174
      Encryption
      		 47,720
      Extended Instructions
      		 53,277
      Floating Point Maths
      		 154,973
      Integer Maths
      		 221,260
      Physics
      		 6,749
      Prime Numbers
      		 298
      Single Threaded
      		 3,017
      String Sorting
      		 103,141

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 2,215
      Database Operations
      		 22,288
      Memory Latency
      		 83
      Memory Read Cached
      		 27,529
      Memory Read Uncached
      		 9,096
      Memory Write
      		 12,521

      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
      r7i.large 216 GiB0
      r7i.xlarge 432 GiB0
      r7i.2xlarge 864 GiB0
      r7i.4xlarge 16128 GiB0
      r7i.8xlarge 32256 GiB0
      r7i.16xlarge 64512 GiB0
      r7i.24xlarge 96768 GiB0

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      r7i.12xlarge FAQs