r5n.4xlarge by Amazon Web Services

r5n.4xlarge is a Memory optimized [Network and EBS optimized] Gen5 4xlarge server offered by Amazon Web Services with 16 vCPUs, 128 GiB of memory and 0 GB of storage. The pricing starts at 0.1738 USD per hour.
16 vCPU
128 GiB Memory
Spare SCore
13,544
(All-cores)
1,284
(Single-core)

Specifications

Server Metadata

Vendor ID
aws
Name
r5n.4xlarge
Description
Memory optimized [Network and EBS optimized] Gen5 4xlarge
Family
r5n
Hw Virt
Status
active
Observed At
2026-10-25T13:03:52.265778

Availability

REGION / IDSPOTONDEMAND
Ohio (US) / us-east-2
0.3647 USD/h 1.192 USD/h
Northern Virgina (US) / us-east-1
0.49748 USD/h 1.192 USD/h
Oregon (US) / us-west-2
0.583267 USD/h 1.192 USD/h
Mumbai (IN) / ap-south-1
0.474433 USD/h 1.224 USD/h
Stockholm (SE) / eu-north-1
0.214167 USD/h 1.272 USD/h
Quebec (CA) / ca-central-1
0.4197 USD/h 1.304 USD/h
Dublin (IE) / eu-west-1
0.545767 USD/h 1.336 USD/h
California (US) / us-west-1
0.39535 USD/h 1.352 USD/h
Milan (IT) / eu-south-1
0.260467 USD/h 1.4 USD/h
London (GB) / eu-west-2
0.441367 USD/h 1.4 USD/h
Paris (FR) / eu-west-3
0.485933 USD/h 1.4 USD/h
Seoul (KR) / ap-northeast-2
0.541025 USD/h 1.424 USD/h
Frankfurt (DE) / eu-central-1
0.497267 USD/h 1.424 USD/h
Singapore (SG) / ap-southeast-1
0.6346 USD/h 1.424 USD/h
Tokyo (JP) / ap-northeast-1
0.4484 USD/h 1.448 USD/h
Sydney (AU) / ap-southeast-2
0.503067 USD/h 1.448 USD/h
Cape Town (ZA) / af-south-1
0.3301 USD/h 1.589 USD/h
Hong Kong (HK) / ap-east-1
0.374367 USD/h 1.616 USD/h
Sao Paulo (BR) / sa-east-1
0.252767 USD/h 1.888 USD/h

Processor

vCPUs
16
Hypervisor
nitro
CPU Allocation
Dedicated
CPU Cores
8
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
256 KiB
CPU L1I Cache
32 KiB
CPU L1I Cache Total
256 KiB
CPU L2 Cache
1 MiB
CPU L2 Cache Total
8 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, 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
10.6
Scalability
66.25

System Resources and Accelerators

MEMORY
Memory Amount
128 GiB
Memory Amount Actual
128 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
      16.25 Gbps
      Network Speed Max
      25 Gbps
      Network Storage Speed Baseline
      4.75 Gbps
      Network Storage Speed Max
      4.75 Gbps
      Inbound Traffic
      0 GB/month
      Outbound Traffic
      0 GB/month
      IPv4
      0

      Server Description

      A memory-optimized instance featuring a high RAM-to-vCPU ratio and dedicated Intel Xeon processors for memory-intensive workloads.

      Memory OptimizedGeneral Purpose

      The Amazon Web Services r5n.4xlarge is a memory-optimized instance featuring 16 vCPUs and 128.0 GB of DDR4 RAM, running on an Intel Xeon 8259CL processor at 3.1 GHz. Built on the AWS Nitro hypervisor, it provides dedicated CPU allocation and a baseline network bandwidth of 16 Gbps, though it lacks local storage and GPU accelerators. Performance benchmarks place its multi-core processing and memory bandwidth in the average tier, while single-core performance is relatively weak. With a high memory-to-vCPU ratio of 8 GB per core, this instance is qualitatively cost-efficient for memory-heavy workloads that do not demand extreme single-threaded compute. It is highly suited for in-memory databases, caching layers, and general-purpose memory-intensive applications.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      0.76Score
      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) 1,360,916 ops/sec 1,919,289 ops/sec 0.74 50.00% 50.00% -14.00%
      Redis RPS (pipeline=16, SET) 8,371,495 ops/sec 11,728,058 ops/sec 0.7 20.00% 20.00% -6.90%
      PassMark Memory Mark (composite) 2,299 2,416 0.96 10.00% 10.00% -0.41%
      Memory bandwidth (read, 16 MB ~ L3) 94,857 MB/sec 108,466 MB/sec 0.86 10.00% 10.00% -1.50%
      PassMark single-thread CPU 1,805 Mops/s 2,365 Mops/s 0.75 10.00% 10.00% -2.80%

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 1,122

      Geekbench Multi-Core

      Score: 7,004

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 14,139
      Compression
      		 200,538
      Encryption
      		 6,215
      Extended Instructions
      		 12,215
      Floating Point Maths
      		 24,204
      Integer Maths
      		 45,184
      Physics
      		 1,312
      Prime Numbers
      		 66
      Single Threaded
      		 1,805
      String Sorting
      		 23,385

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 2,299
      Database Operations
      		 5,271
      Memory Latency
      		 60
      Memory Read Cached
      		 21,704
      Memory Read Uncached
      		 9,376
      Memory Write
      		 9,204

      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.8xlarge 32256 GiB0
      r5n.12xlarge 48384 GiB0
      r5n.16xlarge 64512 GiB0
      r5n.24xlarge 96768 GiB0

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      r5n.4xlarge FAQs