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 0.416 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
2026-10-25T13:03:52.268302

Availability

REGION / IDSPOTONDEMAND
Northern Virgina (US) / us-east-1
0.84902 USD/h 4.032 USD/h
Ohio (US) / us-east-2
1.228167 USD/h 4.032 USD/h
Oregon (US) / us-west-2
1.66515 USD/h 4.032 USD/h
Hyderabad (IN) / ap-south-2
0.416 USD/h 4.16 USD/h
Mumbai (IN) / ap-south-1
1.277 USD/h 4.16 USD/h
Stockholm (SE) / eu-north-1
0.441167 USD/h 4.288 USD/h
Calgary (CA) / ca-west-1
1.5333 USD/h 4.416 USD/h
Quebec (CA) / ca-central-1
1.363533 USD/h 4.416 USD/h
California (US) / us-west-1
0.92465 USD/h 4.48 USD/h
Aragón (ES) / eu-south-2
0.654433 USD/h 4.512 USD/h
Dublin (IE) / eu-west-1
2.187833 USD/h 4.512 USD/h
Milan (IT) / eu-south-1
0.963967 USD/h 4.736 USD/h
Paris (FR) / eu-west-3
1.2881 USD/h 4.736 USD/h
London (GB) / eu-west-2
2.168267 USD/h 4.736 USD/h
Tel Aviv (IL) / il-central-1
1.486867 USD/h 4.738 USD/h
Melbourne (AU) / ap-southeast-4
1.2789 USD/h 4.832 USD/h
Sydney (AU) / ap-southeast-2
1.9703 USD/h 4.832 USD/h
Jakarta (ID) / ap-southeast-3
0.4864 USD/h 4.864 USD/h
Tokyo (JP) / ap-northeast-1
1.089633 USD/h 4.864 USD/h
Seoul (KR) / ap-northeast-2
1.321575 USD/h 4.864 USD/h
Osaka (JP) / ap-northeast-3
1.7943 USD/h 4.864 USD/h
Frankfurt (DE) / eu-central-1
1.552767 USD/h 4.864 USD/h
Singapore (SG) / ap-southeast-1
2.0162 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
0.595333 USD/h 5.344 USD/h
Zurich (CH) / eu-central-2
1.700833 USD/h 5.35 USD/h
Cape Town (ZA) / af-south-1
1.002 USD/h 5.376 USD/h
Sao Paulo (BR) / sa-east-1
1.064 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
67.03

System Resources and Accelerators

MEMORY
Memory Amount
512 GiB
Memory Amount Actual
512 GiB
Memory Generation
DDR4
Memory Speed
3200 Mhz
ACCELERATORS
Accelerator Count
0
Accelerator Memory Min
0 MiB
Accelerator Memory Total
0 MiB
Accelerators
    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

      2.1Score
      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 1,919,289 ops/sec 2.8 50.00% 50.00% +67.00%
      Redis RPS (pipeline=16, SET) 31,481,770 ops/sec 11,728,058 ops/sec 2.6 20.00% 20.00% +21.00%
      PassMark Memory Mark (composite) 2,620 2,416 1.1 10.00% 10.00% +0.96%
      Memory bandwidth (read, 16 MB ~ L3) 231,415 MB/sec 108,466 MB/sec 2.1 10.00% 10.00% +7.70%
      PassMark single-thread CPU 1,816 Mops/s 2,365 Mops/s 0.75 10.00% 10.00% -2.80%

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 1,019

      Geekbench Multi-Core

      Score: 11,288

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 42,482
      Compression
      		 785,450
      Encryption
      		 24,817
      Extended Instructions
      		 48,998
      Floating Point Maths
      		 96,845
      Integer Maths
      		 180,774
      Physics
      		 4,652
      Prime Numbers
      		 258
      Single Threaded
      		 1,816
      String Sorting
      		 91,898

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 2,620
      Database Operations
      		 21,284
      Memory Latency
      		 53
      Memory Read Cached
      		 22,276
      Memory Read Uncached
      		 9,976
      Memory Write
      		 9,729

      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

      INSTANCEvCPUsMEMORYAccelerators
      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