r6i.16xlarge by Amazon Web Services

r6i.16xlarge is a Memory optimized [Intel processors] Gen6 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
61,950
(All-cores)
1,894
(Single-core)

Specifications

Server Metadata

Vendor ID
aws
Name
r6i.16xlarge
Description
Memory optimized [Intel processors] Gen6 16xlarge
Family
r6i
Hw Virt
Status
active
Observed At
2026-10-29T17:19:31.520816

Availability

REGION / IDSPOTONDEMAND
Ohio (US) / us-east-2
1.270433 USD/h 4.032 USD/h
Northern Virgina (US) / us-east-1
1.14086 USD/h 4.032 USD/h
Oregon (US) / us-west-2
1.668525 USD/h 4.032 USD/h
(TH) / ap-southeast-7
1.2692 USD/h 4.1344 USD/h
(MY) / ap-southeast-5
1.297067 USD/h 4.1344 USD/h
Hyderabad (IN) / ap-south-2
0.416 USD/h 4.16 USD/h
Mumbai (IN) / ap-south-1
1.358133 USD/h 4.16 USD/h
(MX) / mx-central-1
1.214733 USD/h 4.2336 USD/h
Stockholm (SE) / eu-north-1
0.5496 USD/h 4.288 USD/h
Taipei (TW) / ap-east-2
1.179067 USD/h 4.3776 USD/h
Calgary (CA) / ca-west-1
0.896967 USD/h 4.416 USD/h
Quebec (CA) / ca-central-1
1.809967 USD/h 4.416 USD/h
California (US) / us-west-1
0.6689 USD/h 4.48 USD/h
Dublin (IE) / eu-west-1
1.792033 USD/h 4.512 USD/h
Milan (IT) / eu-south-1
1.303533 USD/h 4.736 USD/h
London (GB) / eu-west-2
1.738967 USD/h 4.736 USD/h
Paris (FR) / eu-west-3
1.457567 USD/h 4.736 USD/h
Tel Aviv (IL) / il-central-1
1.423767 USD/h 4.7376 USD/h
Sydney (AU) / ap-southeast-2
1.936933 USD/h 4.832 USD/h
Seoul (KR) / ap-northeast-2
1.230825 USD/h 4.864 USD/h
Singapore (SG) / ap-southeast-1
1.855833 USD/h 4.864 USD/h
Tokyo (JP) / ap-northeast-1
1.9497 USD/h 4.864 USD/h
Osaka (JP) / ap-northeast-3
2.1485 USD/h 4.864 USD/h
Frankfurt (DE) / eu-central-1
2.472633 USD/h 4.864 USD/h
United Arab Emirates / me-central-1
2.0318 USD/h 4.9632 USD/h
(NZ) / ap-southeast-6
1.523633 USD/h 5.0736 USD/h
Hong Kong (HK) / ap-east-1
0.772467 USD/h 5.344 USD/h
Zurich (CH) / eu-central-2
1.9113 USD/h 5.3504 USD/h
Cape Town (ZA) / af-south-1
1.123533 USD/h 5.376 USD/h
Sao Paulo (BR) / sa-east-1
1.0894 USD/h 6.432 USD/h

Processor

vCPUs
64
Hypervisor
nitro
CPU Allocation
Dedicated
CPU Cores
32
CPU Speed
3.5 GHz
CPU Architecture
x86_64
CPU Manufacturer
Intel
CPU Family
Xeon
CPU Model
8375C
CPU L1D Cache
48 KiB
CPU L1D Cache Total
2 MiB
CPU L1I Cache
32 KiB
CPU L1I Cache Total
1 MiB
CPU L2 Cache
1 MiB
CPU L2 Cache Total
40 MiB
CPU L3 Cache
54 MiB
CPU L3 Cache Total
54 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, arch_perfmon, rep_good, nopl, xtopology, nonstop_tsc, cpuid, aperfmperf, tsc_known_freq, pni, pclmulqdq, monitor, ssse3, fma, cx16, pcid, sse4_1, sse4_2, x2apic, movbe, popcnt, tsc_deadline_timer, aes, xsave, avx, f16c, rdrand, hypervisor, lahf_lm, abm, 3dnowprefetch, ssbd, ibrs, ibpb, stibp, ibrs_enhanced, fsgsbase, tsc_adjust, bmi1, avx2, smep, bmi2, erms, invpcid, avx512f, avx512dq, rdseed, adx, smap, avx512ifma, clflushopt, clwb, avx512cd, sha_ni, avx512bw, avx512vl, xsaveopt, xsavec, xgetbv1, xsaves, wbnoinvd, ida, arat, avx512vbmi, pku, ospke, avx512_vbmi2, gfni, vaes, vpclmulqdq, avx512_vnni, avx512_bitalg, tme, avx512_vpopcntdq, rdpid, md_clear, flush_l1d, arch_capabilities
Ecpus
32.7
Scalability
51.09

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
      25 Gbps
      Network Speed Max
      25 Gbps
      Network Storage Speed Baseline
      20 Gbps
      Network Storage Speed Max
      20 Gbps
      Inbound Traffic
      0 GB/month
      Outbound Traffic
      0 GB/month
      IPv4
      0

      Server Description

      A memory-optimized x86_64 platform featuring a high memory-to-core ratio and strong multi-core processing for database and enterprise workloads.

      Memory Optimized

      Amazon Web Services r6i.16xlarge is a memory-optimized instance featuring 64 vCPUs and 512.0 GB of DDR4 RAM, powered by an Intel Xeon 8375C processor running at 3.5 GHz. Built on the AWS Nitro System, this x86_64 server delivers 8.0 GB of memory per physical core but lacks local storage and GPU accelerators. Benchmark results indicate strong multi-core performance, with a PassMark CPU score of 57729.17 and strong database operations performance. Single-core metrics and memory bandwidth fall within the average tier, with large-block read bandwidth at 167.36 GB/sec. The instance supports advanced instruction sets like AVX-512 and cryptographic acceleration. It is designed for memory-intensive workloads such as relational databases, in-memory caching, and enterprise applications requiring high memory capacity relative to compute resources.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      2.7Score
      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) 7,728,438 ops/sec 1,919,289 ops/sec 4.1 50.00% 50.00% +100.00%
      Redis RPS (pipeline=16, SET) 35,405,183 ops/sec 11,728,058 ops/sec 2.9 20.00% 20.00% +24.00%
      PassMark Memory Mark (composite) 2,703 2,416 1.1 10.00% 10.00% +0.96%
      Memory bandwidth (read, 16 MB ~ L3) 177,434 MB/sec 108,466 MB/sec 1.6 10.00% 10.00% +4.80%
      PassMark single-thread CPU 2,426 Mops/s 2,365 Mops/s 1 10.00% 10.00% 0.00%

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 1,688

      Geekbench Multi-Core

      Score: 15,435

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 57,729
      Compression
      		 950,138
      Encryption
      		 55,793
      Extended Instructions
      		 53,738
      Floating Point Maths
      		 137,218
      Integer Maths
      		 268,452
      Physics
      		 4,276
      Prime Numbers
      		 269
      Single Threaded
      		 2,426
      String Sorting
      		 123,266

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 2,703
      Database Operations
      		 26,616
      Memory Latency
      		 57
      Memory Read Cached
      		 24,377
      Memory Read Uncached
      		 11,976
      Memory Write
      		 10,860

      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
      r6i.large 216 GiB0
      r6i.xlarge 432 GiB0
      r6i.2xlarge 864 GiB0
      r6i.4xlarge 16128 GiB0
      r6i.8xlarge 32256 GiB0
      r6i.12xlarge 48384 GiB0
      r6i.24xlarge 96768 GiB0

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      r6i.16xlarge FAQs