r8i-flex.2xlarge by Amazon Web Services

r8i-flex.2xlarge is a Memory optimized [Intel processors] Gen8 2xlarge server offered by Amazon Web Services with 8 vCPUs, 64 GiB of memory and 0 GB of storage. The pricing starts at 0.0545 USD per hour.
8 vCPU
64 GiB Memory
Spare SCore
8,656
(All-cores)
2,132
(Single-core)

Specifications

Server Metadata

Vendor ID
aws
Name
r8i-flex.2xlarge
Description
Memory optimized [Intel processors] Gen8 2xlarge
Family
r8i-flex
Hw Virt
Status
active
Observed At
2026-10-29T06:26:09.735682

Availability

REGION / IDSPOTONDEMAND
Ohio (US) / us-east-2
0.1432 USD/h 0.5279 USD/h
Oregon (US) / us-west-2
0.206125 USD/h 0.5279 USD/h
Northern Virgina (US) / us-east-1
0.24022 USD/h 0.5279 USD/h
(MY) / ap-southeast-5
0.159567 USD/h 0.5413 USD/h
Hyderabad (IN) / ap-south-2
0.0545 USD/h 0.5446 USD/h
Mumbai (IN) / ap-south-1
0.1665 USD/h 0.5446 USD/h
Stockholm (SE) / eu-north-1
0.0649 USD/h 0.5614 USD/h
Calgary (CA) / ca-west-1
0.14755 USD/h 0.5782 USD/h
Quebec (CA) / ca-central-1
0.300133 USD/h 0.5782 USD/h
California (US) / us-west-1
0.1619 USD/h 0.5865 USD/h
Aragón (ES) / eu-south-2
0.1003 USD/h 0.5907 USD/h
Dublin (IE) / eu-west-1
0.294533 USD/h 0.5907 USD/h
Paris (FR) / eu-west-3
0.2022 USD/h 0.62 USD/h
London (GB) / eu-west-2
0.194633 USD/h 0.62 USD/h
Milan (IT) / eu-south-1
0.213733 USD/h 0.62 USD/h
Sydney (AU) / ap-southeast-2
0.1863 USD/h 0.6326 USD/h
Seoul (KR) / ap-northeast-2
0.15135 USD/h 0.6368 USD/h
Frankfurt (DE) / eu-central-1
0.2322 USD/h 0.6368 USD/h
Tokyo (JP) / ap-northeast-1
0.2165 USD/h 0.6368 USD/h
Singapore (SG) / ap-southeast-1
0.242333 USD/h 0.6368 USD/h
(NZ) / ap-southeast-6
0.192267 USD/h 0.6642 USD/h
Zurich (CH) / eu-central-2
0.411233 USD/h 0.7005 USD/h
Cape Town (ZA) / af-south-1
0.190467 USD/h 0.7038 USD/h
Sao Paulo (BR) / sa-east-1
0.095267 USD/h 0.8421 USD/h

Processor

vCPUs
8
Hypervisor
nitro
CPU Allocation
Dedicated
CPU Cores
4
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
192 KiB
CPU L1I Cache
64 KiB
CPU L1I Cache Total
256 KiB
CPU L2 Cache
2 MiB
CPU L2 Cache Total
8 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, rep_good, nopl, xtopology, nonstop_tsc, cpuid, tsc_known_freq, pni, pclmulqdq, 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
4.1
Scalability
51.25

System Resources and Accelerators

MEMORY
Memory Amount
64 GiB
Memory Amount Actual
64 GiB
Memory Generation
DDR5
Memory Speed
7200 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
      1.875 Gbps
      Network Speed Max
      15 Gbps
      Network Storage Speed Baseline
      1.25 Gbps
      Network Storage Speed Max
      10 Gbps
      Inbound Traffic
      0 GB/month
      Outbound Traffic
      0 GB/month
      IPv4
      0

      Server Description

      A memory-optimized virtual instance featuring high-speed DDR5 RAM and advanced Intel Xeon matrix extensions for memory-intensive enterprise workloads.

      Memory OptimizedGeneral Purpose

      Amazon Web Services r8i-flex.2xlarge is a memory-optimized instance featuring 8 vCPUs, 4 physical cores, and 64.0 GB of DDR5 RAM running at 7 GHz. Powered by an Intel Xeon 6975P-C processor at 3.9 GHz on the Nitro hypervisor, it supports advanced instruction sets like AVX-512 and AMX for accelerated vector and matrix operations. The instance lacks local storage and dedicated GPUs, relying on a baseline network bandwidth of 2 Gbps. Benchmark results show strong single-core performance, particularly in text processing and single-threaded compression, while multi-core metrics and database operations align with average tiers. The high memory-to-vCPU ratio provides qualitative cost efficiency for memory-bound applications. It is highly suited for database operations, caching layers, and memory-intensive enterprise workloads.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      0.97Score
      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) 1,771,431 ops/sec 1,919,289 ops/sec 0.95 50.00% 50.00% -2.50%
      Redis RPS (pipeline=16, SET) 9,715,803 ops/sec 11,728,058 ops/sec 0.81 20.00% 20.00% -4.10%
      PassMark Memory Mark (composite) 2,252 2,416 0.96 10.00% 10.00% -0.41%
      Memory bandwidth (read, 16 MB ~ L3) 118,147 MB/sec 108,466 MB/sec 1.1 10.00% 10.00% +0.96%
      PassMark single-thread CPU 3,271 Mops/s 2,365 Mops/s 1.4 10.00% 10.00% +3.40%

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 2,137

      Geekbench Multi-Core

      Score: 8,350

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 15,612
      Compression
      		 161,537
      Encryption
      		 9,135
      Extended Instructions
      		 11,344
      Floating Point Maths
      		 29,883
      Integer Maths
      		 41,307
      Physics
      		 1,943
      Prime Numbers
      		 90
      Single Threaded
      		 3,271
      String Sorting
      		 21,461

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 2,252
      Database Operations
      		 4,607
      Memory Latency
      		 76
      Memory Read Cached
      		 28,679
      Memory Read Uncached
      		 11,021
      Memory Write
      		 11,198

      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
      r8i-flex.large 216 GiB0
      r8i-flex.xlarge 432 GiB0
      r8i-flex.4xlarge 16128 GiB0
      r8i-flex.8xlarge 32256 GiB0
      r8i-flex.12xlarge 48384 GiB0
      r8i-flex.16xlarge 64512 GiB0

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      r8i-flex.2xlarge FAQs