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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
55061
(All-cores)
1284
(Single-core)

Specifications

Server Metadata

Vendor ID
aws
Name
r5.16xlarge
Description
Memory optimized Gen5 16xlarge
Family
r5
Hw Virt
Status
active
Observed At
2026-07-27T05:53:19.702884

Availability

REGION / IDSPOTONDEMAND
Northern Virgina (US) / us-east-1
1.17572 USD/h 4.032 USD/h
Ohio (US) / us-east-2
1.2933 USD/h 4.032 USD/h
Oregon (US) / us-west-2
1.6138 USD/h 4.032 USD/h
Mumbai (IN) / ap-south-1
1.099233 USD/h 4.16 USD/h
Hyderabad (IN) / ap-south-2
1.208867 USD/h 4.16 USD/h
Stockholm (SE) / eu-north-1
0.8621 USD/h 4.288 USD/h
Calgary (CA) / ca-west-1
0.8193 USD/h 4.416 USD/h
Quebec (CA) / ca-central-1
1.166067 USD/h 4.416 USD/h
California (US) / us-west-1
1.08965 USD/h 4.48 USD/h
Aragón (ES) / eu-south-2
0.7855 USD/h 4.512 USD/h
Dublin (IE) / eu-west-1
2.121133 USD/h 4.512 USD/h
Paris (FR) / eu-west-3
1.189333 USD/h 4.736 USD/h
Milan (IT) / eu-south-1
0.709267 USD/h 4.736 USD/h
London (GB) / eu-west-2
1.723067 USD/h 4.736 USD/h
Tel Aviv (IL) / il-central-1
1.8598 USD/h 4.738 USD/h
Melbourne (AU) / ap-southeast-4
1.257767 USD/h 4.832 USD/h
Sydney (AU) / ap-southeast-2
2.245167 USD/h 4.832 USD/h
Jakarta (ID) / ap-southeast-3
0.515733 USD/h 4.864 USD/h
Tokyo (JP) / ap-northeast-1
1.166067 USD/h 4.864 USD/h
Seoul (KR) / ap-northeast-2
1.529925 USD/h 4.864 USD/h
Osaka (JP) / ap-northeast-3
1.589733 USD/h 4.864 USD/h
Frankfurt (DE) / eu-central-1
1.598233 USD/h 4.864 USD/h
Singapore (SG) / ap-southeast-1
1.995 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
0.7089 USD/h 5.344 USD/h
Zurich (CH) / eu-central-2
1.1713 USD/h 5.35 USD/h
Cape Town (ZA) / af-south-1
0.6541 USD/h 5.376 USD/h
Sao Paulo (BR) / sa-east-1
1.384467 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 DDR4 RAM and 64 vCPUs for memory-intensive database and caching workloads.

      Memory OptimizedGeneral Purpose

      Amazon Web Services r5.16xlarge is a memory-optimized instance featuring 64 vCPUs and 32 physical cores powered by an Intel Xeon 8259CL processor running at 3.1 GHz. It is equipped with 512.0 GB of DDR4 memory, providing a high memory-to-vCPU ratio, but lacks local storage and dedicated GPUs. The instance operates on the Nitro hypervisor and delivers a baseline network bandwidth of 20 Gbps. Benchmark data shows strong memory bandwidth for large blocks, with read speeds of 216.36 GB/sec and write speeds of 95.17 GB/sec, while single-core CPU performance remains weak. Multi-core performance and database operations fall within the average range. This instance is designed for memory-intensive workloads, such as database operations and caching layers, where large memory capacity is prioritized over raw single-threaded compute power or local storage.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      2.19Score
      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 1,896,415 ops/sec 2.86 50.00% 50.00% +69.10%
      Redis RPS (pipeline=16, SET) 31,481,770 ops/sec 11,539,523 ops/sec 2.73 20.00% 20.00% +22.20%
      PassMark Memory Mark (composite) 2,620 2,411 1.09 10.00% 10.00% +0.87%
      Memory bandwidth (read, 16 MB ~ L3) 231,415 MB/sec 107,368 MB/sec 2.16 10.00% 10.00% +8.01%
      PassMark single-thread CPU 1,816 Mops/s 2,363 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