r5.16xlarge by Amazon Web Services

r5.16xlarge is a Memory optimized Gen5 16xlarge server offered by Amazon Web Services with 64 vCPUs, 512 GiB of memory and 0 GB of storage. The pricing starts at 0.4416 USD per hour.
64 vCPU
512 GiB Memory
Spare SCore
55,061
(All-cores)
1,284
(Single-core)

Specifications

Server Metadata

Vendor ID
aws
Name
r5.16xlarge
Description
Memory optimized Gen5 16xlarge
Family
r5
Hw Virt
Status
active
Observed At
2026-09-10T10:18:12.338443

Availability

REGION / IDSPOTONDEMAND
Northern Virgina (US) / us-east-1
1.01326 USD/h 4.032 USD/h
Ohio (US) / us-east-2
1.128133 USD/h 4.032 USD/h
Oregon (US) / us-west-2
1.55285 USD/h 4.032 USD/h
Mumbai (IN) / ap-south-1
0.995433 USD/h 4.16 USD/h
Hyderabad (IN) / ap-south-2
0.939767 USD/h 4.16 USD/h
Stockholm (SE) / eu-north-1
0.6336 USD/h 4.288 USD/h
Calgary (CA) / ca-west-1
1.305233 USD/h 4.416 USD/h
Quebec (CA) / ca-central-1
1.218433 USD/h 4.416 USD/h
California (US) / us-west-1
0.93915 USD/h 4.48 USD/h
Aragón (ES) / eu-south-2
0.771567 USD/h 4.512 USD/h
Dublin (IE) / eu-west-1
2.086333 USD/h 4.512 USD/h
Milan (IT) / eu-south-1
0.809733 USD/h 4.736 USD/h
Paris (FR) / eu-west-3
1.352867 USD/h 4.736 USD/h
London (GB) / eu-west-2
1.497633 USD/h 4.736 USD/h
Tel Aviv (IL) / il-central-1
1.779033 USD/h 4.738 USD/h
Melbourne (AU) / ap-southeast-4
1.035733 USD/h 4.832 USD/h
Sydney (AU) / ap-southeast-2
1.988867 USD/h 4.832 USD/h
Jakarta (ID) / ap-southeast-3
0.727033 USD/h 4.864 USD/h
Seoul (KR) / ap-northeast-2
1.329125 USD/h 4.864 USD/h
Tokyo (JP) / ap-northeast-1
1.0991 USD/h 4.864 USD/h
Frankfurt (DE) / eu-central-1
1.6861 USD/h 4.864 USD/h
Singapore (SG) / ap-southeast-1
1.9493 USD/h 4.864 USD/h
Osaka (JP) / ap-northeast-3
2.159267 USD/h 4.864 USD/h
United Arab Emirates / me-central-1
2.0317 USD/h 4.963 USD/h
Hong Kong (HK) / ap-east-1
0.7546 USD/h 5.344 USD/h
Zurich (CH) / eu-central-2
1.6063 USD/h 5.35 USD/h
Cape Town (ZA) / af-south-1
1.108133 USD/h 5.376 USD/h
Sao Paulo (BR) / sa-east-1
0.648467 USD/h 6.432 USD/h

Processor

vCPUs
64
Hypervisor
nitro
CPU Allocation
Dedicated
CPU Cores
32
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
1 MiB
CPU L1I Cache
32 KiB
CPU L1I Cache Total
1 MiB
CPU L2 Cache
1 MiB
CPU L2 Cache Total
32 MiB
CPU L3 Cache
36 MiB
CPU L3 Cache Total
72 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, 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
42.9
Scalability
134.06

System Resources and Accelerators

MEMORY
Memory Amount
512 GiB
Memory Amount Actual
512 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
      20 Gbps
      Network Speed Max
      20 Gbps
      Network Storage Speed Baseline
      13.6 Gbps
      Network Storage Speed Max
      13.6 Gbps
      Inbound Traffic
      0 GB/month
      Outbound Traffic
      0 GB/month
      IPv4
      0

      Server Description

      A memory-optimized instance featuring 512 GB of RAM and strong large-block memory bandwidth for memory-intensive enterprise workloads.

      Memory OptimizedGeneral Purpose

      The Amazon Web Services r5.16xlarge is a memory-optimized instance utilizing the AWS Nitro hypervisor. It is configured with an Intel Xeon 8259CL processor featuring 64 vCPUs (32 physical cores) running at 3.1 GHz, alongside 512.0 GB of DDR4 memory. This instance does not include local storage or GPU accelerators, but provides a 20 Gbps baseline network bandwidth. Performance benchmarks show weak single-core CPU metrics but average multi-core capabilities. Notably, it delivers strong memory bandwidth for large uncached read and write blocks, placing it in the top 25%. Qualitatively, the r5.16xlarge provides a cost-efficient profile for memory-heavy applications that do not require high-performance local storage. It is best suited for in-memory databases, caching layers, and memory-intensive data processing workloads.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      2.17Score
      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) 5,427,515 ops/sec 1,917,397 ops/sec 2.83 50.00% 50.00% +68.20%
      Redis RPS (pipeline=16, SET) 31,481,770 ops/sec 11,681,410 ops/sec 2.7 20.00% 20.00% +22.00%
      PassMark Memory Mark (composite) 2,620 2,418 1.08 10.00% 10.00% +0.77%
      Memory bandwidth (read, 16 MB ~ L3) 231,415 MB/sec 108,140 MB/sec 2.14 10.00% 10.00% +7.90%
      PassMark single-thread CPU 1,816 Mops/s 2,365 Mops/s 0.768 10.00% 10.00% -2.61%

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 1,019

      Geekbench Multi-Core

      Score: 11,288

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 42482
      Compression
      		 785450
      Encryption
      		 24817
      Extended Instructions
      		 48998
      Floating Point Maths
      		 96845
      Integer Maths
      		 180774
      Physics
      		 4652
      Prime Numbers
      		 258
      Single Threaded
      		 1816
      String Sorting
      		 91898

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 2620
      Database Operations
      		 21284
      Memory Latency
      		 53
      Memory Read Cached
      		 22276
      Memory Read Uncached
      		 9976
      Memory Write
      		 9729

      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
      r5.12xlarge 48384 GiB0
      r5.24xlarge 96768 GiB0

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      r5.16xlarge FAQs