r7a.12xlarge by Amazon Web Services

r7a.12xlarge is a Memory optimized [AMD processors] Gen7 12xlarge server offered by Amazon Web Services with 48 vCPUs, 384 GiB of memory and 0 GB of storage. The pricing starts at 0.3768 USD per hour.
48 vCPU
384 GiB Memory
Spare SCore
147,630
(All-cores)
3,077
(Single-core)

Specifications

Server Metadata

Vendor ID
aws
Name
r7a.12xlarge
Description
Memory optimized [AMD processors] Gen7 12xlarge
Family
r7a
Hw Virt
Status
active
Observed At
2026-10-15T00:45:58.555218

Availability

REGION / IDSPOTONDEMAND
Ohio (US) / us-east-2
0.7795 USD/h 3.6516 USD/h
Northern Virgina (US) / us-east-1
1.2139 USD/h 3.6516 USD/h
Oregon (US) / us-west-2
1.425125 USD/h 3.6516 USD/h
Hyderabad (IN) / ap-south-2
0.74705 USD/h 3.7675 USD/h
Stockholm (SE) / eu-north-1
0.5617 USD/h 3.8832 USD/h
Aragón (ES) / eu-south-2
1.026933 USD/h 4.0862 USD/h
Dublin (IE) / eu-west-1
2.210467 USD/h 4.0862 USD/h
Tokyo (JP) / ap-northeast-1
1.329833 USD/h 4.405 USD/h
Frankfurt (DE) / eu-central-1
1.671833 USD/h 4.405 USD/h

Processor

vCPUs
48
Hypervisor
nitro
CPU Allocation
Dedicated
CPU Cores
48
CPU Speed
3.7 GHz
CPU Architecture
x86_64
CPU Manufacturer
AMD
CPU Family
EPYC
CPU Model
9R14
CPU L1D Cache
32 KiB
CPU L1D Cache Total
2 MiB
CPU L1I Cache
32 KiB
CPU L1I Cache Total
2 MiB
CPU L2 Cache
1 MiB
CPU L2 Cache Total
48 MiB
CPU L3 Cache
32 MiB
CPU L3 Cache Total
192 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, 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, bmi1, avx2, smep, bmi2, invpcid, avx512f, avx512dq, rdseed, adx, smap, avx512ifma, clflushopt, clwb, avx512cd, sha_ni, avx512bw, avx512vl, xsaveopt, xsavec, xgetbv1, xsaves, avx512_bf16, clzero, xsaveerptr, rdpru, wbnoinvd, arat, avx512vbmi, pku, ospke, avx512_vbmi2, gfni, vaes, vpclmulqdq, avx512_vnni, avx512_bitalg, avx512_vpopcntdq, rdpid, flush_l1d
Ecpus
48
Scalability
100

System Resources and Accelerators

MEMORY
Memory Amount
384 GiB
Memory Amount Actual
384 GiB
Memory Generation
DDR5
Memory Speed
4800 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
      18.75 Gbps
      Network Speed Max
      18.75 Gbps
      Network Storage Speed Baseline
      15 Gbps
      Network Storage Speed Max
      15 Gbps
      Inbound Traffic
      0 GB/month
      Outbound Traffic
      0 GB/month
      IPv4
      0

      Server Description

      A memory-optimized platform combining dedicated AMD EPYC processors and high-speed DDR5 memory for demanding database and compute workloads.

      Memory OptimizedCompute Optimized

      Amazon Web Services r7a.12xlarge is a memory-optimized instance featuring 48 dedicated physical cores powered by an AMD EPYC 9R14 processor running at 3.7 GHz. It is equipped with 384.0 GB of DDR5 memory operating at 5 GHz, delivering a high memory-to-core ratio of 8.0 GB per core. Operating on the AWS Nitro hypervisor, the instance provides 19 Gbps of baseline network bandwidth but contains no local storage. Performance benchmarks place this instance in the top 10% for multi-core CPU execution and software compilation, alongside strong memory bandwidth and database operation metrics. Qualitatively, its high-density DDR5 memory and dedicated compute resources offer strong efficiency for memory-bound workloads. It is highly suited for in-memory databases, Redis caching layers, software compilation pipelines, and large-scale data processing tasks.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      2.9Score
      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) 6,695,712 ops/sec 1,917,050 ops/sec 3.5 50.00% 50.00% +87.00%
      Redis RPS (pipeline=16, SET) 58,698,425 ops/sec 11,661,818 ops/sec 4.9 20.00% 20.00% +37.00%
      PassMark Memory Mark (composite) 2,777 2,417 1.2 10.00% 10.00% +1.80%
      Memory bandwidth (read, 16 MB ~ L3) 286,122 MB/sec 108,361 MB/sec 2.6 10.00% 10.00% +10.00%
      PassMark single-thread CPU 2,883 Mops/s 2,365 Mops/s 1.2 10.00% 10.00% +1.80%

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 1,994

      Geekbench Multi-Core

      Score: 21,368

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 79414
      Compression
      		 1195413
      Encryption
      		 62860
      Extended Instructions
      		 97657
      Floating Point Maths
      		 255041
      Integer Maths
      		 290101
      Physics
      		 11818
      Prime Numbers
      		 895
      Single Threaded
      		 2883
      String Sorting
      		 173779

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 2777
      Database Operations
      		 28962
      Memory Latency
      		 80
      Memory Read Cached
      		 27848
      Memory Read Uncached
      		 26941
      Memory Write
      		 25653

      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
      r7a.medium 18 GiB0
      r7a.large 216 GiB0
      r7a.xlarge 432 GiB0
      r7a.2xlarge 864 GiB0
      r7a.4xlarge 16128 GiB0
      r7a.8xlarge 32256 GiB0
      r7a.16xlarge 64512 GiB0

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      r7a.12xlarge FAQs