logo

r5b.16xlarge by Amazon Web Services

r5b.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 0.5216 USD per hour.
Visit Vendor Status Page
64 vCPU
512 GiB Memory
Spare SCore
54544
(All-cores)
1285
(Single-core)

Specifications

Server Metadata

Vendor ID
aws
Name
r5b.16xlarge
Description
Memory optimized Gen5 16xlarge
Family
r5b
Hw Virt
-
Status
active
Observed At
2026-06-17T08:30:19.199717

Availability

REGION / IDSPOTONDEMAND
Oregon (US) / us-west-2
1.851967 USD/h 4.768 USD/h
Ohio (US) / us-east-2
2.411233 USD/h 4.768 USD/h
Northern Virgina (US) / us-east-1
2.4191 USD/h 4.768 USD/h
Stockholm (SE) / eu-north-1
0.8871 USD/h 5.0541 USD/h
Quebec (CA) / ca-central-1
1.5404 USD/h 5.216 USD/h
Dublin (IE) / eu-west-1
2.165833 USD/h 5.344 USD/h
Milan (IT) / eu-south-1
0.999233 USD/h 5.6 USD/h
London (GB) / eu-west-2
2.317667 USD/h 5.6 USD/h
Singapore (SG) / ap-southeast-1
2.101333 USD/h 5.696 USD/h
Seoul (KR) / ap-northeast-2
2.274533 USD/h 5.696 USD/h
Frankfurt (DE) / eu-central-1
2.1056 USD/h 5.696 USD/h
Tokyo (JP) / ap-northeast-1
1.2019 USD/h 5.792 USD/h
Sydney (AU) / ap-southeast-2
2.357467 USD/h 5.792 USD/h
Sao Paulo (BR) / sa-east-1
4.0075 USD/h 7.584 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
42.4
Scalability
132.5

System Resources and Accelerators

MEMORY
Memory Amount
512 GiB
Memory Amount Actual
512 GiB
Memory Generation
DDR4
Memory Speed
2933 Mhz
GPU
GPU Count
0
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
      40 Gbps
      Network Storage Speed Max
      40 Gbps
      Inbound Traffic
      0 GB/month
      Outbound Traffic
      0 GB/month
      IPv4
      0

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 1,209

      Geekbench Multi-Core

      Score: 11,786

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		41629
      Compression
      		787517
      Encryption
      		24664
      Extended Instructions
      		48892
      Floating Point Maths
      		96695
      Integer Maths
      		180136
      Physics
      		3762
      Prime Numbers
      		199
      Single Threaded
      		1819
      String Sorting
      		91140

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		2280
      Database Operations
      		19499
      Memory Latency
      		61
      Memory Read Cached
      		22000
      Memory Read Uncached
      		8407
      Memory Write
      		7837

      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
      r5b.large 216 GiB0
      r5b.xlarge 432 GiB0
      r5b.2xlarge 864 GiB0
      r5b.4xlarge 16128 GiB0
      r5b.8xlarge 32256 GiB0
      r5b.12xlarge 48384 GiB0
      r5b.24xlarge 96768 GiB0

      Similar Servers

      INSTANCEVENDORvCPUsMEMORYGPUs

      r5b.16xlarge FAQs