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r5.12xlarge by Amazon Web Services

r5.12xlarge is a Memory optimized Gen5 12xlarge server offered by Amazon Web Services with 48 vCPUs, 384 GiB of memory and 0 GB of storage. The pricing starts at 0.3312 USD per hour.
48 vCPU
384 GiB Memory
Spare SCore
40464
(All-cores)
1385
(Single-core)

Specifications

Server Metadata

Vendor ID
aws
Name
r5.12xlarge
Description
Memory optimized Gen5 12xlarge
Family
r5
Hw Virt
Status
active
Observed At
2026-07-27T05:53:19.703380

Availability

REGION / IDSPOTONDEMAND
Ohio (US) / us-east-2
0.8139 USD/h 3.024 USD/h
Northern Virgina (US) / us-east-1
1.07614 USD/h 3.024 USD/h
Oregon (US) / us-west-2
1.23795 USD/h 3.024 USD/h
Mumbai (IN) / ap-south-1
0.755767 USD/h 3.12 USD/h
Hyderabad (IN) / ap-south-2
0.8662 USD/h 3.12 USD/h
Stockholm (SE) / eu-north-1
0.5418 USD/h 3.216 USD/h
Calgary (CA) / ca-west-1
0.4429 USD/h 3.312 USD/h
Quebec (CA) / ca-central-1
0.629733 USD/h 3.312 USD/h
California (US) / us-west-1
0.7066 USD/h 3.36 USD/h
Aragón (ES) / eu-south-2
0.596667 USD/h 3.384 USD/h
Dublin (IE) / eu-west-1
1.658267 USD/h 3.384 USD/h
Milan (IT) / eu-south-1
0.574067 USD/h 3.552 USD/h
Paris (FR) / eu-west-3
0.8953 USD/h 3.552 USD/h
London (GB) / eu-west-2
1.1331 USD/h 3.552 USD/h
Tel Aviv (IL) / il-central-1
0.751367 USD/h 3.553 USD/h
Melbourne (AU) / ap-southeast-4
0.657967 USD/h 3.624 USD/h
Sydney (AU) / ap-southeast-2
1.5461 USD/h 3.624 USD/h
Jakarta (ID) / ap-southeast-3
0.692233 USD/h 3.648 USD/h
Tokyo (JP) / ap-northeast-1
0.917 USD/h 3.648 USD/h
Seoul (KR) / ap-northeast-2
1.361275 USD/h 3.648 USD/h
Osaka (JP) / ap-northeast-3
1.126433 USD/h 3.648 USD/h
Frankfurt (DE) / eu-central-1
1.254433 USD/h 3.648 USD/h
Singapore (SG) / ap-southeast-1
1.500267 USD/h 3.648 USD/h
United Arab Emirates / me-central-1
1.5237 USD/h 3.722 USD/h
Hong Kong (HK) / ap-east-1
0.558767 USD/h 4.008 USD/h
Zurich (CH) / eu-central-2
0.620167 USD/h 4.013 USD/h
Cape Town (ZA) / af-south-1
0.4831 USD/h 4.032 USD/h
Sao Paulo (BR) / sa-east-1
0.5646 USD/h 4.824 USD/h

Processor

vCPUs
48
Hypervisor
nitro
CPU Allocation
Dedicated
CPU Cores
24
CPU Speed
3.1 GHz
CPU Architecture
x86_64
CPU Manufacturer
Intel
CPU Family
Xeon
CPU Model
8259CL
CPU L1D Cache
32 KiB
CPU L1D Cache Total
768 KiB
CPU L1I Cache
32 KiB
CPU L1I Cache Total
768 KiB
CPU L2 Cache
1 MiB
CPU L2 Cache Total
24 MiB
CPU L3 Cache
36 MiB
CPU L3 Cache Total
36 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, pcid, sse4_1, sse4_2, x2apic, movbe, popcnt, tsc_deadline_timer, aes, xsave, avx, f16c, rdrand, hypervisor, lahf_lm, abm, 3dnowprefetch, pti, fsgsbase, tsc_adjust, bmi1, avx2, smep, bmi2, erms, invpcid, mpx, avx512f, avx512dq, rdseed, adx, smap, clflushopt, clwb, avx512cd, avx512bw, avx512vl, xsaveopt, xsavec, xgetbv1, xsaves, ida, arat, pku, ospke
Ecpus
29.2
Scalability
121.67

System Resources and Accelerators

MEMORY
Memory Amount
384 GiB
Memory Amount Actual
384 GiB
Memory Generation
DDR4
Memory Speed
2933 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
      12 Gbps
      Network Speed Max
      12 Gbps
      Network Storage Speed Baseline
      9.5 Gbps
      Network Storage Speed Max
      9.5 Gbps
      Inbound Traffic
      0 GB/month
      Outbound Traffic
      0 GB/month
      IPv4
      0

      Server Description

      A memory-optimized virtual server featuring a high memory-to-vCPU ratio and steady multi-core performance for memory-intensive data workloads.

      Memory Optimized

      Amazon Web Services r5.12xlarge is a memory-optimized instance powered by the Nitro hypervisor and an Intel Xeon 8259CL processor. Utilizing the x86_64 architecture, it provides 48 vCPUs (24 physical cores) running at 3.1 GHz, paired with 384.0 GB of DDR4 memory. The instance lacks local storage and dedicated GPUs, relying on a baseline network bandwidth of 12 Gbps. Performance benchmarks place the r5.12xlarge in the average tier for multi-core processing, memory bandwidth, and database operations, though single-core performance represents a tradeoff, scoring in the bottom 25%. This hardware profile is suited for memory-intensive workloads, such as in-memory databases, caching layers, and data processing tasks that require a high memory-to-vCPU ratio without demanding top-tier single-threaded compute speeds.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      1.65Score
      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) 3,935,083 ops/sec 1,896,415 ops/sec 2.08 50.00% 50.00% +44.20%
      Redis RPS (pipeline=16, SET) 22,913,586 ops/sec 11,539,523 ops/sec 1.99 20.00% 20.00% +14.80%
      PassMark Memory Mark (composite) 2,627 2,411 1.09 10.00% 10.00% +0.87%
      Memory bandwidth (read, 16 MB ~ L3) 114,969 MB/sec 107,368 MB/sec 1.07 10.00% 10.00% +0.68%
      PassMark single-thread CPU 1,944 Mops/s 2,363 Mops/s 0.823 10.00% 10.00% -1.93%

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 1,151

      Geekbench Multi-Core

      Score: 10,528

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 34677
      Compression
      		 591993
      Encryption
      		 18587
      Extended Instructions
      		 37076
      Floating Point Maths
      		 72971
      Integer Maths
      		 136495
      Physics
      		 2548
      Prime Numbers
      		 173
      Single Threaded
      		 1944
      String Sorting
      		 68829

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 2627
      Database Operations
      		 15621
      Memory Latency
      		 53
      Memory Read Cached
      		 23814
      Memory Read Uncached
      		 10124
      Memory Write
      		 9919

      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
      r5.large 216 GiB0
      r5.xlarge 432 GiB0
      r5.2xlarge 864 GiB0
      r5.4xlarge 16128 GiB0
      r5.8xlarge 32256 GiB0
      r5.16xlarge 64512 GiB0
      r5.24xlarge 96768 GiB0

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      r5.12xlarge FAQs