logo

r8a.2xlarge by Amazon Web Services

r8a.2xlarge is a Memory optimized [AMD 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 0.1536 USD per hour.
8 vCPU
64 GiB Memory
Spare SCore
30092
(All-cores)
3776
(Single-core)

Specifications

Server Metadata

Vendor ID
aws
Name
r8a.2xlarge
Description
Memory optimized [AMD processors] Gen8 2xlarge
Family
r8a
Hw Virt
Status
active
Observed At
2026-07-26T16:53:00.820823

Availability

REGION / IDSPOTONDEMAND
Oregon (US) / us-west-2
0.218675 USD/h 0.639 USD/h
Ohio (US) / us-east-2
0.210067 USD/h 0.639 USD/h
Northern Virgina (US) / us-east-1
0.2895 USD/h 0.639 USD/h
Aragón (ES) / eu-south-2
0.156867 USD/h 0.7151 USD/h
Dublin (IE) / eu-west-1
0.34115 USD/h 0.7151 USD/h
Tokyo (JP) / ap-northeast-1
0.213667 USD/h 0.7709 USD/h
Frankfurt (DE) / eu-central-1
0.300233 USD/h 0.7709 USD/h

Processor

vCPUs
8
Hypervisor
nitro
CPU Allocation
Dedicated
CPU Cores
8
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
384 KiB
CPU L1I Cache
32 KiB
CPU L1I Cache Total
256 KiB
CPU L2 Cache
1 MiB
CPU L2 Cache Total
8 MiB
CPU L3 Cache
32 MiB
CPU L3 Cache Total
32 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
8
Scalability
100

System Resources and Accelerators

MEMORY
Memory Amount
64 GiB
Memory Amount Actual
64 GiB
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
      3.75 Gbps
      Network Speed Max
      15 Gbps
      Network Storage Speed Baseline
      2.5 Gbps
      Network Storage Speed Max
      10 Gbps
      Inbound Traffic
      0 GB/month
      Outbound Traffic
      0 GB/month
      IPv4
      0

      Server Description

      A memory-optimized instance combining high-speed DDR5 RAM with top-tier single-core performance for memory-intensive and caching workloads.

      Memory Optimized

      Amazon Web Services r8a.2xlarge is a memory-optimized instance featuring 8 dedicated physical cores powered by an AMD EPYC 9R45 processor running at 4.5 GHz. Built on the AWS Nitro hypervisor, it provides 64.0 GB of high-speed 6 GHz DDR5 memory, establishing an 8.0 GB per core ratio. The instance lacks local storage, relying entirely on network-attached storage, and features a baseline network bandwidth of 4 Gbps. Performance benchmarks highlight top-tier single-core capabilities, including exceptional single-threaded compression and small-model LLM text generation, while multi-core operations and memory bandwidth remain in the average tier. This hardware profile makes the r8a.2xlarge highly suitable for memory-intensive applications, caching systems, and single-thread-bound database workloads.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      1.41Score
      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) 2,988,289 ops/sec 1,896,415 ops/sec 1.58 50.00% 50.00% +25.70%
      Redis RPS (pipeline=16, SET) 19,752,636 ops/sec 11,539,523 ops/sec 1.71 20.00% 20.00% +11.30%
      PassMark Memory Mark (composite) 2,697 2,411 1.12 10.00% 10.00% +1.14%
      Memory bandwidth (read, 16 MB ~ L3) 62,650 MB/sec 107,368 MB/sec 0.584 10.00% 10.00% -5.24%
      PassMark single-thread CPU 3,815 Mops/s 2,363 Mops/s 1.61 10.00% 10.00% +4.88%

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 2,811

      Geekbench Multi-Core

      Score: 14,192

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 25528
      Compression
      		 263601
      Encryption
      		 12659
      Extended Instructions
      		 24461
      Floating Point Maths
      		 60914
      Integer Maths
      		 60829
      Physics
      		 3076
      Prime Numbers
      		 218
      Single Threaded
      		 3815
      String Sorting
      		 35777

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 2697
      Database Operations
      		 10325
      Memory Latency
      		 82
      Memory Read Cached
      		 33904
      Memory Read Uncached
      		 32195
      Memory Write
      		 32867

      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.4xlarge 16128 GiB0
      r8a.8xlarge 32256 GiB0
      r8a.12xlarge 48384 GiB0
      r8a.16xlarge 64512 GiB0

      Similar Servers

      INSTANCEVENDORvCPUsMEMORYGPUs

      r8a.2xlarge FAQs