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ecs.c8a.12xlarge by Alibaba Cloud

ecs.c8a.12xlarge is a ecs.c8a family (48 vCPUs, 96 GiB RAM, 0 GB storage) server offered by Alibaba Cloud with 48 vCPUs, 96 GiB of memory and 0 GB of storage. The pricing starts at 1.4385 USD per hour.
48 vCPU
96 GiB Memory
Spare SCore
73776
(All-cores)
3072
(Single-core)

Specifications

Server Metadata

Vendor ID
alicloud
Name
ecs.c8a.12xlarge
Description
ecs.c8a family (48 vCPUs, 96 GiB RAM, 0 GB storage)
Family
ecs.c8a
Hw Virt
Average Time To Start
13
Status
active
Observed At
2026-07-21T01:27:01.625256

Availability

REGION / IDSPOTONDEMAND
Shenzhen (CN) / cn-shenzhen
- 1.4385 USD/h

Processor

vCPUs
48
Hypervisor
KVM
CPU Allocation
Dedicated
CPU Cores
48
CPU Speed
2.7 GHz
CPU Architecture
x86_64
CPU Manufacturer
AMD
CPU Family
EPYC
CPU Model
9T24
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
1 MiB
CPU L2 Cache Total
24 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, amd_lbr_v2, 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, extapic, cr8_legacy, abm, sse4a, misalignsse, 3dnowprefetch, osvw, ibs, topoext, perfctr_core, perfctr_llc, mwaitx, 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, avx512_bf16, clzero, irperf, xsaveerptr, rdpru, wbnoinvd, arat, avx512vbmi, umip, pku, ospke, avx512_vbmi2, gfni, vaes, vpclmulqdq, avx512_vnni, avx512_bitalg, avx512_vpopcntdq, rdpid, fsrm
Ecpus
24
Scalability
50

System Resources and Accelerators

MEMORY
Memory Amount
96 GiB
Memory Amount Actual
96 GiB
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
      16 Gbps
      Inbound Traffic
      0 GB/month
      Outbound Traffic
      0 GB/month
      IPv4
      0

      CPU and System Topology

      Server Description

      A dedicated AMD EPYC compute-optimized instance delivering strong multi-core processing and high-throughput cryptographic performance without local storage.

      Compute OptimizedGeneral Purpose

      Alibaba Cloud ecs.c8a.12xlarge is an x86_64 compute-optimized instance featuring 48 dedicated physical cores powered by an AMD EPYC 9T24 processor at 2.7 GHz. Equipped with 96.0 GB of RAM, this KVM-based server provides a 1:2 core-to-memory ratio designed for high-density computational workloads. It lacks local storage but delivers a 16 Gbps baseline network bandwidth. Benchmark data indicates strong performance, with stress-ng CPU tests, PassMark CPU scores, and multi-threaded bzip3 decompression all ranking in the top 25%. Cryptographic operations are accelerated via AES and SHA_NI instruction sets, while Redis SET operations reach 64.43 million operations per second. This instance is optimized for compute-heavy tasks, cryptographic processing, and high-throughput database operations where local storage is not a primary requirement.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      1.99Score
      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) 4,380,528 ops/sec 1,896,415 ops/sec 2.31 50.00% 50.00% +52.00%
      Redis RPS (pipeline=16, SET) 33,935,587 ops/sec 11,539,523 ops/sec 2.94 20.00% 20.00% +24.10%
      PassMark Memory Mark (composite) 2,826 2,411 1.17 10.00% 10.00% +1.58%
      Memory bandwidth (read, 16 MB ~ L3) 126,399 MB/sec 107,368 MB/sec 1.18 10.00% 10.00% +1.67%
      PassMark single-thread CPU 2,871 Mops/s 2,363 Mops/s 1.22 10.00% 10.00% +2.01%

      Memory Bandwidth

      Compression

      OpenSSL

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		62854
      Compression
      		925111
      Encryption
      		57770
      Extended Instructions
      		64824
      Floating Point Maths
      		127522
      Integer Maths
      		228001
      Physics
      		7190
      Prime Numbers
      		365
      Single Threaded
      		2871
      String Sorting
      		134602

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		2826
      Database Operations
      		22342
      Memory Latency
      		75
      Memory Read Cached
      		27343
      Memory Read Uncached
      		26149
      Memory Write
      		25953

      Stress-ng Raw Scores

      Stress-ng Relative Multicore Performance

      Static Web Server

      Redis

      Alternatives

      Servers of the Same Family

      INSTANCEvCPUsMEMORYGPUs
      ecs.c8a.large 24 GiB0
      ecs.c8a.xlarge 48 GiB0
      ecs.c8a.2xlarge 816 GiB0
      ecs.c8a.4xlarge 1632 GiB0
      ecs.c8a.8xlarge 3264 GiB0
      ecs.c8a.16xlarge 64128 GiB0
      ecs.c8a.24xlarge 96192 GiB0

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      ecs.c8a.12xlarge FAQs