x8i.4xlarge by Amazon Web Services

x8i.4xlarge is a Memory intensive [Intel processors] Gen8 4xlarge server offered by Amazon Web Services with 16 vCPUs, 256 GiB of memory and 0 GB of storage. The pricing starts at 0.1996 USD per hour.
16 vCPU
256 GiB Memory
Spare SCore
17,299
(All-cores)
2,128
(Single-core)

Specifications

Server Metadata

Vendor ID
aws
Name
x8i.4xlarge
Description
Memory intensive [Intel processors] Gen8 4xlarge
Family
x8i
Hw Virt
Status
active
Observed At
2026-10-28T23:25:16.791986

Availability

REGION / IDSPOTONDEMAND
Ohio (US) / us-east-2
0.335467 USD/h 1.7506 USD/h
Northern Virgina (US) / us-east-1
0.48022 USD/h 1.7506 USD/h
Oregon (US) / us-west-2
0.61895 USD/h 1.7506 USD/h
Mumbai (IN) / ap-south-1
0.54565 USD/h 1.8062 USD/h
Stockholm (SE) / eu-north-1
0.2058 USD/h 1.9965 USD/h
Aragón (ES) / eu-south-2
0.39115 USD/h 2.1008 USD/h
Dublin (IE) / eu-west-1
0.877667 USD/h 2.1008 USD/h
Milan (IT) / eu-south-1
0.416567 USD/h 2.2051 USD/h
Paris (FR) / eu-west-3
0.4328 USD/h 2.2058 USD/h
(MY) / ap-southeast-5
0.2285 USD/h 2.2846 USD/h
Frankfurt (DE) / eu-central-1
0.8408 USD/h 2.451 USD/h
Seoul (KR) / ap-northeast-2
0.327667 USD/h 2.5385 USD/h
Sydney (AU) / ap-southeast-2
0.815433 USD/h 2.5385 USD/h
Tokyo (JP) / ap-northeast-1
0.8601 USD/h 2.5385 USD/h
Singapore (SG) / ap-southeast-1
0.9284 USD/h 2.5385 USD/h
Sao Paulo (BR) / sa-east-1
0.407133 USD/h 3.4138 USD/h

Processor

vCPUs
16
Hypervisor
nitro
CPU Allocation
Dedicated
CPU Cores
8
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
384 KiB
CPU L1I Cache
64 KiB
CPU L1I Cache Total
512 KiB
CPU L2 Cache
2 MiB
CPU L2 Cache Total
16 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
8.1
Scalability
50.62

System Resources and Accelerators

MEMORY
Memory Amount
256 GiB
Memory Amount Actual
256 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
      7.5 Gbps
      Network Speed Max
      15 Gbps
      Network Storage Speed Baseline
      5 Gbps
      Network Storage Speed Max
      10 Gbps
      Inbound Traffic
      0 GB/month
      Outbound Traffic
      0 GB/month
      IPv4
      0

      CPU and System Topology

      Server Description

      A memory-optimized server featuring high-speed DDR5 memory and strong single-core performance for memory-intensive enterprise workloads.

      Memory OptimizedGeneral Purpose

      Amazon Web Services x8i.4xlarge is a memory-optimized server featuring 16 dedicated vCPUs and 256.0 GB of DDR5 memory running at 7 GHz. Powered by an Intel Xeon 6975P-C processor with a 3.9 GHz clock speed and a 480 MB L3 cache, this instance operates on the Nitro hypervisor and delivers a baseline network bandwidth of 8 Gbps. It includes no local storage or GPUs. Benchmarks show strong single-core performance, particularly in text processing and small-model LLM text generation, where it ranks in the top 10%. Multi-core and memory bandwidth metrics remain in the average tier. Given its high memory-to-vCPU ratio of 16 GB per core and lack of local disks, the x8i.4xlarge is qualitatively cost-efficient for memory-intensive workloads such as in-memory databases, text processing, and lightweight inference tasks that rely on network-attached storage.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      1.7Score
      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) 3,559,892 ops/sec 1,919,289 ops/sec 1.9 50.00% 50.00% +38.00%
      Redis RPS (pipeline=16, SET) 19,840,391 ops/sec 11,728,058 ops/sec 1.7 20.00% 20.00% +11.00%
      PassMark Memory Mark (composite) 2,566 2,416 1.1 10.00% 10.00% +0.96%
      Memory bandwidth (read, 16 MB ~ L3) 164,848 MB/sec 108,466 MB/sec 1.5 10.00% 10.00% +4.10%
      PassMark single-thread CPU 3,280 Mops/s 2,365 Mops/s 1.4 10.00% 10.00% +3.40%

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 2,174

      Geekbench Multi-Core

      Score: 13,193

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 29,213
      Compression
      		 320,795
      Encryption
      		 18,166
      Extended Instructions
      		 22,939
      Floating Point Maths
      		 59,761
      Integer Maths
      		 82,517
      Physics
      		 3,837
      Prime Numbers
      		 177
      Single Threaded
      		 3,280
      String Sorting
      		 42,390

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 2,566
      Database Operations
      		 8,779
      Memory Latency
      		 70
      Memory Read Cached
      		 28,186
      Memory Read Uncached
      		 15,289
      Memory Write
      		 10,947

      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
      x8i.large 232 GiB0
      x8i.xlarge 464 GiB0
      x8i.2xlarge 8128 GiB0
      x8i.8xlarge 32512 GiB0
      x8i.12xlarge 48768 GiB0
      x8i.16xlarge 641024 GiB0
      x8i.24xlarge 961536 GiB0

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      x8i.4xlarge FAQs