r6a.12xlarge by Amazon Web Services

r6a.12xlarge is a Memory optimized [AMD processors] Gen6 12xlarge server offered by Amazon Web Services with 48 vCPUs, 384 GiB of memory and 0 GB of storage. The pricing starts at 0.1716 USD per hour.
48 vCPU
384 GiB Memory
Spare SCore
71,805
(All-cores)
2,988
(Single-core)

Specifications

Server Metadata

Vendor ID
aws
Name
r6a.12xlarge
Description
Memory optimized [AMD processors] Gen6 12xlarge
Family
r6a
Hw Virt
Status
active
Observed At
2026-11-02T00:23:49.873746

Availability

REGION / IDSPOTONDEMAND
Hyderabad (IN) / ap-south-2
0.1716 USD/h 1.716 USD/h
Mumbai (IN) / ap-south-1
0.799867 USD/h 1.716 USD/h
Ohio (US) / us-east-2
0.8511 USD/h 2.7216 USD/h
Northern Virgina (US) / us-east-1
0.88614 USD/h 2.7216 USD/h
Oregon (US) / us-west-2
1.1709 USD/h 2.7216 USD/h
Quebec (CA) / ca-central-1
1.32975 USD/h 2.9808 USD/h
California (US) / us-west-1
0.7628 USD/h 3.024 USD/h
Dublin (IE) / eu-west-1
1.211567 USD/h 3.0456 USD/h
London (GB) / eu-west-2
0.860833 USD/h 3.1968 USD/h
Sydney (AU) / ap-southeast-2
1.410833 USD/h 3.2616 USD/h
Tokyo (JP) / ap-northeast-1
1.310333 USD/h 3.2832 USD/h
Singapore (SG) / ap-southeast-1
1.51805 USD/h 3.2832 USD/h
Frankfurt (DE) / eu-central-1
1.5967 USD/h 3.2832 USD/h

Processor

vCPUs
48
Hypervisor
nitro
CPU Allocation
Dedicated
CPU Cores
24
CPU Speed
3.6 GHz
CPU Architecture
x86_64
CPU Manufacturer
AMD
CPU Family
EPYC
CPU Model
7R13
CPU L1D Cache
32 KiB
CPU L1D Cache Total
768 KiB
CPU L1I Cache
32 KiB
CPU L1I Cache Total
768 KiB
CPU L2 Cache
512 KiB
CPU L2 Cache Total
12 MiB
CPU L3 Cache
32 MiB
CPU L3 Cache Total
96 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, 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, ssbd, ibrs, ibpb, stibp, vmmcall, fsgsbase, bmi1, avx2, smep, bmi2, invpcid, rdseed, adx, smap, clflushopt, clwb, sha_ni, xsaveopt, xsavec, xgetbv1, clzero, xsaveerptr, rdpru, wbnoinvd, arat, npt, nrip_save, vaes, vpclmulqdq, rdpid
Ecpus
24
Scalability
50

System Resources and Accelerators

MEMORY
Memory Amount
384 GiB
Memory Amount Actual
384 GiB
Memory Generation
DDR4
Memory Speed
3200 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 x86_64 server featuring high memory density and strong multi-core processing for demanding database and enterprise workloads.

      Memory Optimized

      Amazon Web Services r6a.12xlarge is a memory-optimized instance featuring 48 vCPUs and 24 physical cores powered by an AMD EPYC 7R13 processor running at 3.6 GHz. Built on the x86_64 architecture and the AWS Nitro hypervisor, it delivers 384.0 GB of DDR4 memory with a high ratio of 8.0 GB per core. The instance lacks local storage and dedicated GPUs, relying instead on network-attached storage and a baseline network bandwidth of 19 Gbps. Benchmark results show strong performance in stress-ng CPU tests, Passmark memory evaluations, and cryptographic operations, alongside average memory bandwidth for large-block transfers. This configuration provides qualitative cost efficiency for memory-intensive tasks, making it highly suitable for large-scale databases, in-memory caching, and enterprise applications.

      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) 4,199,660 ops/sec 1,918,343 ops/sec 2.2 50.00% 50.00% +48.00%
      Redis RPS (pipeline=16, SET) 29,636,614 ops/sec 11,704,734 ops/sec 2.5 20.00% 20.00% +20.00%
      PassMark Memory Mark (composite) 2,828 2,416 1.2 10.00% 10.00% +1.80%
      Memory bandwidth (read, 16 MB ~ L3) 68,995 MB/sec 108,466 MB/sec 0.63 10.00% 10.00% -4.50%
      PassMark single-thread CPU 2,647 Mops/s 2,365 Mops/s 1.1 10.00% 10.00% +0.96%

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 1,673

      Geekbench Multi-Core

      Score: 14,544

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 54,507
      Compression
      		 838,516
      Encryption
      		 56,931
      Extended Instructions
      		 48,965
      Floating Point Maths
      		 121,264
      Integer Maths
      		 220,864
      Physics
      		 3,705
      Prime Numbers
      		 264
      Single Threaded
      		 2,647
      String Sorting
      		 99,235

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 2,828
      Database Operations
      		 18,039
      Memory Latency
      		 64
      Memory Read Cached
      		 26,391
      Memory Read Uncached
      		 17,372
      Memory Write
      		 16,570

      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
      r6a.large 216 GiB0
      r6a.xlarge 432 GiB0
      r6a.2xlarge 864 GiB0
      r6a.4xlarge 16128 GiB0
      r6a.8xlarge 32256 GiB0
      r6a.16xlarge 64512 GiB0
      r6a.24xlarge 96768 GiB0

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      r6a.12xlarge FAQs