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r6i.12xlarge by Amazon Web Services

r6i.12xlarge is a Memory optimized [Intel processors] Gen6 12xlarge server offered by Amazon Web Services with 48 vCPUs, 384 GiB of memory and 0 GB of storage. The pricing starts at 0.3805 USD per hour.
48 vCPU
384 GiB Memory
Spare SCore
46463
(All-cores)
1894
(Single-core)

Specifications

Server Metadata

Vendor ID
aws
Name
r6i.12xlarge
Description
Memory optimized [Intel processors] Gen6 12xlarge
Family
r6i
Hw Virt
Status
active
Observed At
2026-08-12T06:33:47.565011

Availability

REGION / IDSPOTONDEMAND
Ohio (US) / us-east-2
0.972567 USD/h 3.024 USD/h
Northern Virgina (US) / us-east-1
1.16834 USD/h 3.024 USD/h
Oregon (US) / us-west-2
1.328275 USD/h 3.024 USD/h
(TH) / ap-southeast-7
1.011633 USD/h 3.1008 USD/h
(MY) / ap-southeast-5
1.0731 USD/h 3.1008 USD/h
Mumbai (IN) / ap-south-1
0.712167 USD/h 3.12 USD/h
Hyderabad (IN) / ap-south-2
1.025967 USD/h 3.12 USD/h
(MX) / mx-central-1
1.2657 USD/h 3.1752 USD/h
Stockholm (SE) / eu-north-1
0.6386 USD/h 3.216 USD/h
Taipei (TW) / ap-east-2
0.7986 USD/h 3.2832 USD/h
Calgary (CA) / ca-west-1
0.762767 USD/h 3.312 USD/h
Quebec (CA) / ca-central-1
1.138433 USD/h 3.312 USD/h
California (US) / us-west-1
1.09175 USD/h 3.36 USD/h
Dublin (IE) / eu-west-1
1.471333 USD/h 3.384 USD/h
London (GB) / eu-west-2
1.1567 USD/h 3.552 USD/h
Milan (IT) / eu-south-1
1.163567 USD/h 3.552 USD/h
Paris (FR) / eu-west-3
1.2965 USD/h 3.552 USD/h
Tel Aviv (IL) / il-central-1
0.785733 USD/h 3.5532 USD/h
Sydney (AU) / ap-southeast-2
1.885867 USD/h 3.624 USD/h
Tokyo (JP) / ap-northeast-1
1.1277 USD/h 3.648 USD/h
Seoul (KR) / ap-northeast-2
1.4884 USD/h 3.648 USD/h
Singapore (SG) / ap-southeast-1
1.6434 USD/h 3.648 USD/h
Frankfurt (DE) / eu-central-1
1.488633 USD/h 3.648 USD/h
Osaka (JP) / ap-northeast-3
1.562333 USD/h 3.648 USD/h
United Arab Emirates / me-central-1
1.5239 USD/h 3.7224 USD/h
(NZ) / ap-southeast-6
0.6484 USD/h 3.8052 USD/h
Hong Kong (HK) / ap-east-1
0.7637 USD/h 4.008 USD/h
Zurich (CH) / eu-central-2
1.456233 USD/h 4.0128 USD/h
Cape Town (ZA) / af-south-1
0.611467 USD/h 4.032 USD/h
Sao Paulo (BR) / sa-east-1
1.001533 USD/h 4.824 USD/h

Processor

vCPUs
48
Hypervisor
nitro
CPU Allocation
Dedicated
CPU Cores
24
CPU Speed
3.5 GHz
CPU Architecture
x86_64
CPU Manufacturer
Intel
CPU Family
Xeon
CPU Model
8375C
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
1 MiB
CPU L2 Cache Total
30 MiB
CPU L3 Cache
54 MiB
CPU L3 Cache Total
54 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, aperfmperf, tsc_known_freq, pni, pclmulqdq, ssse3, fma, cx16, 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, wbnoinvd, ida, arat, avx512vbmi, pku, ospke, avx512_vbmi2, gfni, vaes, vpclmulqdq, avx512_vnni, avx512_bitalg, tme, avx512_vpopcntdq, rdpid, md_clear, flush_l1d, arch_capabilities
Ecpus
24.5
Scalability
102.08

System Resources and Accelerators

MEMORY
Memory Amount
384 GiB
Memory Amount Actual
384 GiB
Memory Generation
DDR4
Memory Speed
3200 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
      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 virtual server featuring forty-eight vCPUs and three hundred eighty-four gigabytes of RAM for memory-intensive enterprise workloads.

      Memory OptimizedGeneral Purpose

      Amazon Web Services r6i.12xlarge is a memory-optimized instance powered by the AWS Nitro hypervisor and an Intel Xeon 8375C processor. Operating on the x86_64 architecture, it delivers 48 vCPUs across 24 physical cores at 3.5 GHz, paired with 384.0 GB of DDR4 memory. The instance features a 19 Gbps baseline network bandwidth, with no local storage or GPU accelerators. Benchmark data indicates solid mid-tier performance, with a Passmark CPU score of 48391.39 and a Redis SET throughput of 45.38 million operations per second. It shows strong capabilities in encryption and image processing, though large-scale LLM inference remains a bottleneck. This hardware profile is designed for memory-intensive workloads such as in-memory databases, caching layers, and enterprise applications that require a high memory-to-vCPU ratio without local storage dependencies.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      2.29Score
      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) 6,144,811 ops/sec 1,910,660 ops/sec 3.22 50.00% 50.00% +79.40%
      Redis RPS (pipeline=16, SET) 30,692,453 ops/sec 11,608,287 ops/sec 2.64 20.00% 20.00% +21.40%
      PassMark Memory Mark (composite) 2,623 2,416 1.09 10.00% 10.00% +0.87%
      Memory bandwidth (read, 16 MB ~ L3) 167,075 MB/sec 107,896 MB/sec 1.55 10.00% 10.00% +4.48%
      PassMark single-thread CPU 2,367 Mops/s 2,364 Mops/s 1 10.00% 10.00% 0.00%

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 1,642

      Geekbench Multi-Core

      Score: 15,739

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 48391
      Compression
      		 728880
      Encryption
      		 43366
      Extended Instructions
      		 41818
      Floating Point Maths
      		 102915
      Integer Maths
      		 201326
      Physics
      		 3974
      Prime Numbers
      		 230
      Single Threaded
      		 2367
      String Sorting
      		 98731

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 2623
      Database Operations
      		 21116
      Memory Latency
      		 60
      Memory Read Cached
      		 24311
      Memory Read Uncached
      		 11768
      Memory Write
      		 10601

      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
      r6i.large 216 GiB0
      r6i.xlarge 432 GiB0
      r6i.2xlarge 864 GiB0
      r6i.4xlarge 16128 GiB0
      r6i.8xlarge 32256 GiB0
      r6i.16xlarge 64512 GiB0
      r6i.24xlarge 96768 GiB0

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      r6i.12xlarge FAQs