r5n.16xlarge by Amazon Web Services

r5n.16xlarge is a Memory optimized [Network and EBS 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 0.5088 USD per hour.
64 vCPU
512 GiB Memory
Spare SCore
54,183
(All-cores)
1,286
(Single-core)

Specifications

Server Metadata

Vendor ID
aws
Name
r5n.16xlarge
Description
Memory optimized [Network and EBS optimized] Gen5 16xlarge
Family
r5n
Hw Virt
Status
active
Observed At
2026-11-03T05:42:36.210167

Availability

REGION / IDSPOTONDEMAND
Northern Virgina (US) / us-east-1
1.17382 USD/h 4.768 USD/h
Ohio (US) / us-east-2
1.6597 USD/h 4.768 USD/h
Oregon (US) / us-west-2
2.1154 USD/h 4.768 USD/h
Mumbai (IN) / ap-south-1
2.440233 USD/h 4.896 USD/h
Stockholm (SE) / eu-north-1
0.5179 USD/h 5.088 USD/h
Quebec (CA) / ca-central-1
2.438433 USD/h 5.216 USD/h
Dublin (IE) / eu-west-1
2.421633 USD/h 5.344 USD/h
California (US) / us-west-1
0.82505 USD/h 5.408 USD/h
Paris (FR) / eu-west-3
1.6743 USD/h 5.6 USD/h
London (GB) / eu-west-2
2.8509 USD/h 5.6 USD/h
Milan (IT) / eu-south-1
0.997133 USD/h 5.601 USD/h
Seoul (KR) / ap-northeast-2
1.5792 USD/h 5.696 USD/h
Singapore (SG) / ap-southeast-1
2.195567 USD/h 5.696 USD/h
Frankfurt (DE) / eu-central-1
2.2853 USD/h 5.696 USD/h
Tokyo (JP) / ap-northeast-1
1.060633 USD/h 5.792 USD/h
Sydney (AU) / ap-southeast-2
2.148467 USD/h 5.792 USD/h
Cape Town (ZA) / af-south-1
1.660767 USD/h 6.357 USD/h
Hong Kong (HK) / ap-east-1
1.051533 USD/h 6.464 USD/h
Sao Paulo (BR) / sa-east-1
1.660133 USD/h 7.552 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, avx512_vnni
Ecpus
42.1
Scalability
65.78

System Resources and Accelerators

MEMORY
Memory Amount
512 GiB
Memory Amount Actual
512 GiB
Memory Generation
DDR4
Memory Speed
2933 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
      75 Gbps
      Network Speed Max
      75 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

      An x86 memory optimized platform featuring high speed network bandwidth and dense memory capacity designed to support large scale data intensive workloads.

      Memory OptimizedGeneral Purpose

      Amazon Web Services r5n.16xlarge is a memory-optimized instance featuring 64 vCPUs, 32 physical Intel Xeon 8259CL cores at 3.1 GHz, and 512.0 GB of DDR4 RAM. Running on the Nitro hypervisor, this x86_64 server lacks local storage and GPUs but provides a baseline network bandwidth of 75 Gbps. Benchmark results show average multi-core CPU performance alongside strong memory bandwidth for large-block uncached read and write operations, which rank in the top 25%. Conversely, single-core performance is relatively weak, falling in the bottom 25%. Qualitatively, the instance offers high memory density and network throughput, making it a viable option for memory-intensive workloads. It is best suited for distributed databases, in-memory caching, and data processing tasks where memory capacity and network speed are prioritized over single-threaded processing power.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      2.2Score
      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) 5,299,572 ops/sec 1,920,103 ops/sec 2.8 50.00% 50.00% +67.00%
      Redis RPS (pipeline=16, SET) 31,485,877 ops/sec 11,744,104 ops/sec 2.6 20.00% 20.00% +21.00%
      PassMark Memory Mark (composite) 2,608 2,415 1.1 10.00% 10.00% +0.96%
      Memory bandwidth (read, 16 MB ~ L3) 231,931 MB/sec 108,490 MB/sec 2.1 10.00% 10.00% +7.70%
      PassMark single-thread CPU 1,879 Mops/s 2,365 Mops/s 0.79 10.00% 10.00% -2.30%

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 1,121

      Geekbench Multi-Core

      Score: 11,686

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 44,219
      Compression
      		 814,224
      Encryption
      		 25,697
      Extended Instructions
      		 54,154
      Floating Point Maths
      		 100,341
      Integer Maths
      		 187,456
      Physics
      		 4,796
      Prime Numbers
      		 268
      Single Threaded
      		 1,879
      String Sorting
      		 95,401

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 2,608
      Database Operations
      		 21,749
      Memory Latency
      		 54
      Memory Read Cached
      		 22,636
      Memory Read Uncached
      		 10,105
      Memory Write
      		 9,799

      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
      r5n.large 216 GiB0
      r5n.xlarge 432 GiB0
      r5n.2xlarge 864 GiB0
      r5n.4xlarge 16128 GiB0
      r5n.8xlarge 32256 GiB0
      r5n.12xlarge 48384 GiB0
      r5n.24xlarge 96768 GiB0

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      r5n.16xlarge FAQs