r8i.16xlarge by Amazon Web Services

r8i.16xlarge is a Memory optimized [Intel processors] Gen8 16xlarge server offered by Amazon Web Services with 64 vCPUs, 512 GiB of memory and 0 GB of storage. The pricing starts at 0.4728 USD per hour.
64 vCPU
512 GiB Memory
Spare SCore
69,209
(All-cores)
2,122
(Single-core)

Specifications

Server Metadata

Vendor ID
aws
Name
r8i.16xlarge
Description
Memory optimized [Intel processors] Gen8 16xlarge
Family
r8i
Hw Virt
Status
active
Observed At
2026-09-12T15:17:44.782106

Availability

REGION / IDSPOTONDEMAND
Ohio (US) / us-east-2
1.262267 USD/h 4.4454 USD/h
Northern Virgina (US) / us-east-1
1.34842 USD/h 4.4454 USD/h
Oregon (US) / us-west-2
1.750575 USD/h 4.4454 USD/h
(MY) / ap-southeast-5
1.138533 USD/h 4.5581 USD/h
Mumbai (IN) / ap-south-1
1.010067 USD/h 4.5866 USD/h
Hyderabad (IN) / ap-south-2
0.919667 USD/h 4.5866 USD/h
Stockholm (SE) / eu-north-1
0.5506 USD/h 4.7277 USD/h
Calgary (CA) / ca-west-1
0.9051 USD/h 4.8688 USD/h
Quebec (CA) / ca-central-1
2.028733 USD/h 4.8688 USD/h
California (US) / us-west-1
1.61725 USD/h 4.9392 USD/h
Aragón (ES) / eu-south-2
1.246633 USD/h 4.9744 USD/h
Dublin (IE) / eu-west-1
2.108367 USD/h 4.9744 USD/h
Milan (IT) / eu-south-1
1.477033 USD/h 5.2214 USD/h
Paris (FR) / eu-west-3
1.677567 USD/h 5.2214 USD/h
London (GB) / eu-west-2
2.815567 USD/h 5.2214 USD/h
Tel Aviv (IL) / il-central-1
0.9912 USD/h 5.2234 USD/h
Sydney (AU) / ap-southeast-2
2.204167 USD/h 5.3274 USD/h
Seoul (KR) / ap-northeast-2
1.4492 USD/h 5.3626 USD/h
Tokyo (JP) / ap-northeast-1
2.142467 USD/h 5.3626 USD/h
Singapore (SG) / ap-southeast-1
2.490867 USD/h 5.3626 USD/h
Frankfurt (DE) / eu-central-1
2.4743 USD/h 5.3626 USD/h
United Arab Emirates / me-central-1
2.2401 USD/h 5.472 USD/h
(NZ) / ap-southeast-6
0.647033 USD/h 5.5936 USD/h
Zurich (CH) / eu-central-2
2.037233 USD/h 5.8989 USD/h
Cape Town (ZA) / af-south-1
0.896633 USD/h 5.927 USD/h
Sao Paulo (BR) / sa-east-1
3.2618 USD/h 7.0912 USD/h

Processor

vCPUs
64
Hypervisor
nitro
CPU Allocation
Dedicated
CPU Cores
32
CPU Speed
3.9 GHz
CPU Architecture
x86_64
CPU Manufacturer
Intel
CPU Family
Xeon
CPU Model
6975P-C
CPU L1D Cache
48 KiB
CPU L1D Cache Total
2 MiB
CPU L1I Cache
64 KiB
CPU L1I Cache Total
2 MiB
CPU L2 Cache
2 MiB
CPU L2 Cache Total
64 MiB
CPU L3 Cache
480 MiB
CPU L3 Cache Total
480 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, pdcm, pcid, sse4_1, sse4_2, x2apic, movbe, popcnt, tsc_deadline_timer, aes, xsave, avx, f16c, rdrand, hypervisor, lahf_lm, abm, 3dnowprefetch, cpuid_fault, 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, avx_vnni, avx512_bf16, wbnoinvd, ida, arat, avx512vbmi, umip, pku, ospke, waitpkg, avx512_vbmi2, gfni, vaes, vpclmulqdq, avx512_vnni, avx512_bitalg, tme, avx512_vpopcntdq, rdpid, bus_lock_detect, cldemote, movdiri, movdir64b, md_clear, serialize, amx_bf16, avx512_fp16, amx_tile, amx_int8, flush_l1d, arch_capabilities
Ecpus
32.6
Scalability
101.88

System Resources and Accelerators

MEMORY
Memory Amount
512 GiB
Memory Amount Actual
512 GiB
Memory Generation
DDR5
Memory Speed
7200 Mhz
GPU
GPU Count
0
GPU Memory Min
0 MiB
GPU Memory Total
0 MiB
GPUs
    STORAGE
    Storage Size
    0 GB
    Storages
      NETWORK
      Network Speed Baseline
      30 Gbps
      Network Speed Max
      30 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 server featuring 512 GB of DDR5 RAM and Intel Xeon processors for high-throughput database and compilation workloads.

      Memory OptimizedStorage & Database

      Amazon Web Services r8i.16xlarge is a memory-optimized server powered by the Nitro hypervisor and an Intel Xeon 6975P-C processor. Built on the x86_64 architecture, it features 64 dedicated vCPUs, 32 physical cores, and 512.0 GB of DDR5 memory operating at 7 GHz. The processor includes a 480 MB L3 cache and supports Intel Advanced Matrix Extensions (AMX) and AVX-512. While it lacks local storage, it offers a 30 Gbps baseline network bandwidth. In benchmarks, the server delivers top-tier multi-core performance, ranking in the top 10% for Geekbench multi-core scores and software compilation. It also shows strong memory bandwidth and handles 120.37 million operations per second in Redis SET tests. This profile makes the r8i.16xlarge highly cost-efficient for memory-intensive workloads, such as in-memory databases, large-scale data processing, and enterprise application hosting.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      4.56Score
      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) 14,613,586 ops/sec 1,917,397 ops/sec 7.62 50.00% 50.00% +176.00%
      Redis RPS (pipeline=16, SET) 80,733,135 ops/sec 11,681,410 ops/sec 6.91 20.00% 20.00% +47.20%
      PassMark Memory Mark (composite) 2,663 2,418 1.1 10.00% 10.00% +0.96%
      Memory bandwidth (read, 16 MB ~ L3) 226,285 MB/sec 108,140 MB/sec 2.09 10.00% 10.00% +7.65%
      PassMark single-thread CPU 3,267 Mops/s 2,365 Mops/s 1.38 10.00% 10.00% +3.27%

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 2,188

      Geekbench Multi-Core

      Score: 21,093

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 82755
      Compression
      		 1269035
      Encryption
      		 72309
      Extended Instructions
      		 88555
      Floating Point Maths
      		 239070
      Integer Maths
      		 330263
      Physics
      		 8992
      Prime Numbers
      		 531
      Single Threaded
      		 3267
      String Sorting
      		 163903

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 2663
      Database Operations
      		 28497
      Memory Latency
      		 68
      Memory Read Cached
      		 27294
      Memory Read Uncached
      		 15700
      Memory Write
      		 10825

      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
      r8i.large 216 GiB0
      r8i.xlarge 432 GiB0
      r8i.2xlarge 864 GiB0
      r8i.4xlarge 16128 GiB0
      r8i.8xlarge 32256 GiB0
      r8i.12xlarge 48384 GiB0
      r8i.24xlarge 96768 GiB0

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      r8i.16xlarge FAQs