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r8i.12xlarge by Amazon Web Services

r8i.12xlarge is a Memory optimized [Intel processors] Gen8 12xlarge server offered by Amazon Web Services with 48 vCPUs, 384 GiB of memory and 0 GB of storage. The pricing starts at 0.3419 USD per hour.
48 vCPU
384 GiB Memory
Spare SCore
51903
(All-cores)
2123
(Single-core)

Specifications

Server Metadata

Vendor ID
aws
Name
r8i.12xlarge
Description
Memory optimized [Intel processors] Gen8 12xlarge
Family
r8i
Hw Virt
Status
active
Observed At
2026-07-29T00:13:20.073239

Availability

REGION / IDSPOTONDEMAND
Northern Virgina (US) / us-east-1
1.47644 USD/h 3.3341 USD/h
Ohio (US) / us-east-2
1.2757 USD/h 3.3341 USD/h
Oregon (US) / us-west-2
1.7929 USD/h 3.3341 USD/h
(MY) / ap-southeast-5
0.3419 USD/h 3.4186 USD/h
Mumbai (IN) / ap-south-1
0.821067 USD/h 3.4399 USD/h
Hyderabad (IN) / ap-south-2
0.922667 USD/h 3.4399 USD/h
Stockholm (SE) / eu-north-1
0.6841 USD/h 3.5458 USD/h
Quebec (CA) / ca-central-1
0.931667 USD/h 3.6516 USD/h
California (US) / us-west-1
1.7685 USD/h 3.7044 USD/h
Aragón (ES) / eu-south-2
0.399733 USD/h 3.7308 USD/h
Dublin (IE) / eu-west-1
1.561433 USD/h 3.7308 USD/h
Paris (FR) / eu-west-3
1.0757 USD/h 3.9161 USD/h
London (GB) / eu-west-2
1.670767 USD/h 3.9161 USD/h
Sydney (AU) / ap-southeast-2
1.929633 USD/h 3.9955 USD/h
Seoul (KR) / ap-northeast-2
1.796325 USD/h 4.0219 USD/h
Tokyo (JP) / ap-northeast-1
1.350533 USD/h 4.0219 USD/h
Singapore (SG) / ap-southeast-1
1.655833 USD/h 4.0219 USD/h
Frankfurt (DE) / eu-central-1
1.676333 USD/h 4.0219 USD/h
United Arab Emirates / me-central-1
1.6801 USD/h 4.104 USD/h
(NZ) / ap-southeast-6
0.4195 USD/h 4.1952 USD/h
Zurich (CH) / eu-central-2
1.355333 USD/h 4.4242 USD/h
Cape Town (ZA) / af-south-1
0.4603 USD/h 4.4453 USD/h
Sao Paulo (BR) / sa-east-1
3.116267 USD/h 5.3184 USD/h

Processor

vCPUs
48
Hypervisor
nitro
CPU Allocation
Dedicated
CPU Cores
24
CPU Speed
3.9 GHz
CPU Architecture
x86_64
CPU Manufacturer
Intel
CPU Family
Xeon
CPU Model
6975P-C
CPU L1D Cache
48 KiB
CPU L1D Cache Total
1 MiB
CPU L1I Cache
64 KiB
CPU L1I Cache Total
2 MiB
CPU L2 Cache
2 MiB
CPU L2 Cache Total
48 MiB
CPU L3 Cache
480 MiB
CPU L3 Cache Total
480 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, cpuid_fault, 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, bus_lock_detect, cldemote, movdiri, movdir64b, md_clear, serialize, amx_bf16, avx512_fp16, amx_tile, amx_int8, flush_l1d, arch_capabilities
Ecpus
24.4
Scalability
101.67

System Resources and Accelerators

MEMORY
Memory Amount
384 GiB
Memory Amount Actual
384 GiB
Memory Generation
DDR5
Memory Speed
7200 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
      22.5 Gbps
      Network Speed Max
      22.5 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 server featuring high-speed DDR5 RAM, dedicated Intel Xeon processing, and advanced matrix extensions for memory-intensive enterprise workloads.

      Memory OptimizedStorage & Database

      Amazon Web Services r8i.12xlarge is an x86_64 memory-optimized instance featuring a dedicated 24-core Intel Xeon 6975P-C processor with 48 vCPUs running at 3.9 GHz. It is equipped with 384.0 GB of high-speed 7 GHz DDR5 memory, a 480 MB L3 cache, and a baseline network bandwidth of 22 Gbps, though it lacks local storage and dedicated GPUs. Benchmark data indicates top-tier performance in single-core processing, image manipulation, and text processing, alongside strong memory read bandwidth of up to 3860.19 GB/sec. The instance also demonstrates strong database capabilities, executing 87.47 million Redis SET operations per second, and strong LLM inference speeds. This hardware profile is optimized for memory-intensive workloads, including in-memory databases, caching layers, software compilation, and text processing pipelines.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      3.7Score
      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) 10,640,200 ops/sec 1,896,415 ops/sec 5.61 50.00% 50.00% +137.00%
      Redis RPS (pipeline=16, SET) 58,778,475 ops/sec 11,539,523 ops/sec 5.09 20.00% 20.00% +38.50%
      PassMark Memory Mark (composite) 2,652 2,411 1.1 10.00% 10.00% +0.96%
      Memory bandwidth (read, 16 MB ~ L3) 234,092 MB/sec 107,368 MB/sec 2.18 10.00% 10.00% +8.10%
      PassMark single-thread CPU 3,257 Mops/s 2,363 Mops/s 1.38 10.00% 10.00% +3.27%

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 2,187

      Geekbench Multi-Core

      Score: 19,625

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 69028
      Compression
      		 951912
      Encryption
      		 54373
      Extended Instructions
      		 67750
      Floating Point Maths
      		 179322
      Integer Maths
      		 247706
      Physics
      		 8109
      Prime Numbers
      		 478
      Single Threaded
      		 3257
      String Sorting
      		 124521

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 2652
      Database Operations
      		 23080
      Memory Latency
      		 70
      Memory Read Cached
      		 28916
      Memory Read Uncached
      		 15620
      Memory Write
      		 11199

      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
      r8i.large 216 GiB0
      r8i.xlarge 432 GiB0
      r8i.2xlarge 864 GiB0
      r8i.4xlarge 16128 GiB0
      r8i.8xlarge 32256 GiB0
      r8i.16xlarge 64512 GiB0
      r8i.24xlarge 96768 GiB0

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      r8i.12xlarge FAQs