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r8a.48xlarge by Amazon Web Services

r8a.48xlarge is a Memory optimized [AMD processors] Gen8 48xlarge server offered by Amazon Web Services with 192 vCPUs, 1536 GiB of memory and 0 GB of storage. The pricing starts at 1.8501 USD per hour.
192 vCPU
1536 GiB Memory
Spare SCore
684883
(All-cores)
3773
(Single-core)

Specifications

Server Metadata

Vendor ID
aws
Name
r8a.48xlarge
Description
Memory optimized [AMD processors] Gen8 48xlarge
Family
r8a
Hw Virt
Status
active
Observed At
2026-07-29T08:53:58.065558

Availability

REGION / IDSPOTONDEMAND
Oregon (US) / us-west-2
4.68215 USD/h 15.337 USD/h
Northern Virgina (US) / us-east-1
5.9504 USD/h 15.337 USD/h
Ohio (US) / us-east-2
8.841867 USD/h 15.337 USD/h
Aragón (ES) / eu-south-2
3.966567 USD/h 17.1619 USD/h
Dublin (IE) / eu-west-1
4.61645 USD/h 17.1619 USD/h
Tokyo (JP) / ap-northeast-1
2.838367 USD/h 18.5011 USD/h
Frankfurt (DE) / eu-central-1
6.361167 USD/h 18.5011 USD/h

Processor

vCPUs
192
Hypervisor
nitro
CPU Allocation
Dedicated
CPU Cores
192
CPU Speed
4.5 GHz
CPU Architecture
x86_64
CPU Manufacturer
AMD
CPU Family
EPYC
CPU Model
9R45
CPU L1D Cache
48 KiB
CPU L1D Cache Total
9 MiB
CPU L1I Cache
32 KiB
CPU L1I Cache Total
6 MiB
CPU L2 Cache
1 MiB
CPU L2 Cache Total
192 MiB
CPU L3 Cache
32 MiB
CPU L3 Cache Total
768 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, ht, syscall, nx, mmxext, fxsr_opt, pdpe1gb, rdtscp, lm, constant_tsc, rep_good, nopl, xtopology, nonstop_tsc, cpuid, extd_apicid, aperfmperf, tsc_known_freq, pni, pclmulqdq, monitor, ssse3, fma, cx16, pcid, sse4_1, sse4_2, x2apic, movbe, popcnt, aes, xsave, avx, f16c, rdrand, hypervisor, lahf_lm, cmp_legacy, cr8_legacy, abm, sse4a, misalignsse, 3dnowprefetch, topoext, perfctr_core, ssbd, perfmon_v2, ibrs, ibpb, stibp, ibrs_enhanced, vmmcall, 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, clzero, xsaveerptr, rdpru, wbnoinvd, arat, avx512vbmi, pku, ospke, avx512_vbmi2, gfni, vaes, vpclmulqdq, avx512_vnni, avx512_bitalg, avx512_vpopcntdq, rdpid, movdiri, movdir64b, fsrm, avx512_vp2intersect, flush_l1d
Ecpus
181.5
Scalability
94.53

System Resources and Accelerators

MEMORY
Memory Amount
2 TB
Memory Amount Actual
2 TB
Memory Generation
DDR5
Memory Speed
6400 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
      75 Gbps
      Network Speed Max
      75 Gbps
      Network Storage Speed Baseline
      60 Gbps
      Network Storage Speed Max
      60 Gbps
      Inbound Traffic
      0 GB/month
      Outbound Traffic
      0 GB/month
      IPv4
      0

      CPU and System Topology

      Server Description

      A high-density, memory-optimized platform featuring dedicated AMD EPYC processors and DDR5 memory for demanding enterprise databases and analytical workloads.

      Memory OptimizedCompute Optimized

      Amazon Web Services r8a.48xlarge is a memory-optimized server instance featuring 192 dedicated physical cores powered by AMD EPYC 9R45 processors running at 4.5 GHz on the Nitro hypervisor. It is configured with 1536.0 GB of DDR5 memory at 6 GHz, yielding 8.0 GB of RAM per core, with no local storage or GPUs. The instance delivers a baseline network bandwidth of 75 Gbps. Benchmarks place this server in the top tier for both single-core and multi-core CPU performance, alongside exceptional memory bandwidth. It is highly optimized for memory-intensive workloads, including large-scale database operations, Redis deployments, software compilation, and large language model inference.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      13.5Score
      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) 48,566,405 ops/sec 1,896,415 ops/sec 25.6 50.00% 50.00% +406.00%
      Redis RPS (pipeline=16, SET) 317,140,521 ops/sec 11,539,523 ops/sec 27.5 20.00% 20.00% +94.00%
      PassMark Memory Mark (composite) 2,951 2,411 1.22 10.00% 10.00% +2.01%
      Memory bandwidth (read, 16 MB ~ L3) 1,298,382 MB/sec 107,368 MB/sec 12.1 10.00% 10.00% +28.30%
      PassMark single-thread CPU 3,830 Mops/s 2,363 Mops/s 1.62 10.00% 10.00% +4.94%

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 2,824

      Geekbench Multi-Core

      Score: 27,479

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 184882
      Compression
      		 4719312
      Encryption
      		 267647
      Extended Instructions
      		 396018
      Floating Point Maths
      		 1266544
      Integer Maths
      		 1384107
      Physics
      		 56853
      Prime Numbers
      		 4157
      Single Threaded
      		 3830
      String Sorting
      		 648733

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 2951
      Database Operations
      		 44396
      Memory Latency
      		 82
      Memory Read Cached
      		 33893
      Memory Read Uncached
      		 32794
      Memory Write
      		 32997

      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
      r8a.medium 18 GiB0
      r8a.large 216 GiB0
      r8a.xlarge 432 GiB0
      r8a.2xlarge 864 GiB0
      r8a.4xlarge 16128 GiB0
      r8a.8xlarge 32256 GiB0
      r8a.12xlarge 48384 GiB0

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      r8a.48xlarge FAQs