c3-128 by OVHcloud

c3-128 is a Compute Optimized (64 vCPUs, 128 GiB RAM, 400 GB NVMe) server offered by OVHcloud with 64 vCPUs, 128 GiB of memory and 400 GB of storage. The pricing starts at 1.6265 USD per hour.
64 vCPU
128 GiB Memory
400 GB Storage
Spare SCore
194,471
(All-cores)
3,073
(Single-core)

Specifications

Server Metadata

Vendor ID
ovh
Name
c3-128
Description
Compute Optimized (64 vCPUs, 128 GiB RAM, 400 GB NVMe)
Family
Compute Optimized
Hw Virt
Average Time To Start
39
Status
active
Observed At
2026-10-28T17:31:02.440575

Availability

REGION / IDSPOTONDEMAND
AP-SOUTHEAST-SYD-2 (AU) / AP-SOUTHEAST-SYD-2
- 1.6265 USD/h
AP-SOUTH-MUM-1 (IN) / AP-SOUTH-MUM-1
- 1.6265 USD/h
BHS5 (CA) / BHS5
- 1.6265 USD/h
DE1 (DE) / DE1
- 1.6265 USD/h
EU-SOUTH-MIL (IT) / EU-SOUTH-MIL
- 1.6265 USD/h
EU-WEST-PAR (FR) / EU-WEST-PAR
- 1.6265 USD/h
GRA11 (FR) / GRA11
- 1.6265 USD/h
GRA7 (FR) / GRA7
- 1.6265 USD/h
GRA9 (FR) / GRA9
- 1.6265 USD/h
RBX-A (FR) / RBX-A
- 1.6265 USD/h
SBG5 (FR) / SBG5
- 1.6265 USD/h
SBG7 (FR) / SBG7
- 1.6265 USD/h
SGP1 (SG) / SGP1
- 1.6265 USD/h
SYD1 (AU) / SYD1
- 1.6265 USD/h
UK1 (GB) / UK1
- 1.6265 USD/h
WAW1 (PL) / WAW1
- 1.6265 USD/h

Processor

vCPUs
64
Hypervisor
KVM
CPU Allocation
Dedicated
CPU Cores
64
CPU Speed
2.3 GHz
CPU Architecture
x86_64
CPU Manufacturer
AMD
CPU Family
EPYC
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
512 KiB
CPU L2 Cache Total
32 MiB
CPU L3 Cache
32 MiB
CPU L3 Cache Total
2 GiB
CPU Flags
fpu, vme, de, pse, tsc, msr, pae, mce, cx8, apic, sep, mtrr, pge, mca, cmov, pat, pse36, clflush, mmx, fxsr, sse, sse2, syscall, nx, mmxext, fxsr_opt, pdpe1gb, rdtscp, lm, rep_good, nopl, cpuid, extd_apicid, tsc_known_freq, pni, pclmulqdq, ssse3, fma, cx16, pcid, sse4_1, sse4_2, x2apic, movbe, popcnt, aes, xsave, avx, f16c, rdrand, hypervisor, lahf_lm, svm, cr8_legacy, abm, sse4a, misalignsse, 3dnowprefetch, osvw, topoext, perfctr_core, ssbd, ibrs, ibpb, stibp, vmmcall, fsgsbase, bmi1, avx2, smep, bmi2, erms, invpcid, rdseed, adx, smap, clflushopt, clwb, sha_ni, xsaveopt, xsavec, xgetbv1, xsaves, clzero, xsaveerptr, wbnoinvd, arat, npt, nrip_save, umip, pku, ospke, rdpid, fsrm
Ecpus
63.3
Scalability
98.91

System Resources and Accelerators

MEMORY
Memory Amount
128 GiB
Memory Amount Actual
125 GiB
ACCELERATORS
Accelerator Count
0
Accelerator Memory Min
0 MiB
Accelerator Memory Total
0 MiB
Accelerators
    STORAGE
    Storage Size
    400 GB
    Storage Type
    nvme ssd
    Storages
    • 400 GB nvme ssd
    NETWORK
    Network Speed Baseline
    8 Gbps
    Network Speed Max
    8 Gbps
    Inbound Traffic
    0 GB/month
    Outbound Traffic
    0 GB/month
    IPv4
    1

    CPU and System Topology

    Server Description

    A dedicated sixty-four core compute instance designed for highly parallelized workloads, multi-threaded software compilation, and high-throughput caching.

    Compute OptimizedStorage & Database

    OVHcloud c3-128 is a compute-optimized server featuring 64 dedicated physical cores on an AMD EPYC x86_64 processor running at 2.3 GHz with no hyperthreading. It is equipped with 128 GB of RAM, a 400 GB NVMe SSD, and an 8 Gbps baseline network interface. Benchmark results indicate top-tier multi-core CPU performance, software compilation speeds, and Redis SET throughput, alongside strong database and static web serving capabilities. Conversely, single-threaded performance and LLM text generation speeds fall into the average range. With a low memory-to-core ratio of 2.0 GB per core, this instance represents a tradeoff favoring dense parallel processing over memory-intensive operations. It is suited for multi-threaded workloads such as software compilation, ray tracing, image processing, and high-throughput caching.

    Economics

    Average Price per Region

    Prices per Zone

    Lowest Prices

    Performance

    Workload Profiles

    3.1Score
    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) 6,931,224 ops/sec 1,919,289 ops/sec 3.6 50.00% 50.00% +90.00%
    Redis RPS (pipeline=16, SET) 66,431,232 ops/sec 11,728,058 ops/sec 5.5 20.00% 20.00% +41.00%
    PassMark Memory Mark (composite) 3,039 2,416 1.2 10.00% 10.00% +1.80%
    Memory bandwidth (read, 16 MB ~ L3) 333,274 MB/sec 108,466 MB/sec 3 10.00% 10.00% +12.00%
    PassMark single-thread CPU 2,939 Mops/s 2,365 Mops/s 1.2 10.00% 10.00% +1.80%

    Memory Bandwidth

    Compression

    OpenSSL

    Geekbench Single-Core

    Score: 1,904

    Geekbench Multi-Core

    Score: 20,572

    Passmark CPU Scores

    BENCHMARKSCORE
    Mark
    		 94,254
    Compression
    		 1,564,581
    Encryption
    		 82,965
    Extended Instructions
    		 119,637
    Floating Point Maths
    		 348,118
    Integer Maths
    		 381,829
    Physics
    		 18,355
    Prime Numbers
    		 1,216
    Single Threaded
    		 2,939
    String Sorting
    		 227,599

    Passmark Memory Scores

    BENCHMARKSCORE
    Memory Mark
    		 3,039
    Database Operations
    		 31,627
    Memory Latency
    		 69
    Memory Read Cached
    		 27,871
    Memory Read Uncached
    		 27,090
    Memory Write
    		 23,582

    Stress-ng Stressors

    CPU integerSingleMultiScaling
    atomic
    		 896.67 332.25 0.37×
    bitops
    		 160,030 10,124,675 63.27×
    branch
    		 212,451 11,765,386 55.38×
    funccall
    		 617.81 38,476 62.28×
    funcret
    		 20,964 1,251,047 59.67×
    hash
    		 163,137 10,403,252 63.77×
    intmath
    		 66,382 4,210,389 63.43×
    nop
    		 625,835 39,498,894 63.11×
    prime
    		 492,524 29,123,259 59.13×
    rotate
    		 87,944 5,592,020 63.59×
    str
    		 1,017,239 58,772,503 57.78×
    wcs
    		 684,906 36,649,383 53.51×
    CryptographySingleMultiScaling
    crypt
    		 3,736 219,726 58.81×
    CompressionSingleMultiScaling
    jpeg
    		 848.18 44,108 52.00×
    zlib
    		 64.13 3,851 60.05×
    HypervisorSingleMultiScaling
    clock
    		 18,851 229,017 12.15×
    clone
    		 288.87 5,603 19.40×
    context
    		 2,947 187,467 63.62×
    cpu-sched
    		 55.94 4,013 71.74×
    eventfd
    		 36,928 1,823,400 49.38×
    fault
    		 10,521 166,065 15.78×
    fork
    		 3,326 81,507 24.50×
    getrandom
    		 52,385 3,269,178 62.41×
    hrtimers
    		 224,265 5,429,379 24.21×
    mprotect
    		 590,758 12,485,185 21.13×
    mtx
    		 43,847,563 6,078,135,037 138.62×
    munmap
    		 2,379 78,351 32.93×
    null
    		 354,748 22,589,041 63.68×
    pipe
    		 380,257 16,507,090 43.41×
    priv-instr
    		 419,781 14,000,481 33.35×
    resched
    		 6,813,397 10,347,712 1.52×
    switch
    		 98,444 5,972,626 60.67×
    timermix
    		 164,486 10,153,729 61.73×
    tlb-shootdown
    		 14,722 229,656 15.60×
    tsc
    		 783,495 49,571,899 63.27×
    usersyscall
    		 324,887 12,528,384 38.56×
    vdso
    		 83,938,293 5,354,553,135 63.79×
    vfork
    		 21,157 137,185 6.48×
    x86syscall
    		 3,992,638 254,325,370 63.70×
    yield
    		 42,290,455 50,598,318 1.20×
    zero
    		 2,764,253 176,336,689 63.79×
    CPU float/SIMDSingleMultiScaling
    eigen
    		 16,357 1,016,061 62.12×
    expmath
    		 3,070 193,382 62.99×
    fma
    		 919,981 55,798,922 60.65×
    fp
    		 251.71 15,883 63.10×
    fractal
    		 7.4 428.18 57.86×
    hyperbolic
    		 3,569 242,123 67.83×
    logmath
    		 4,565 284,628 62.35×
    matrix
    		 4,988 274,436 55.02×
    matrix-3d
    		 951.12 9,152 9.62×
    monte-carlo
    		 171.44 10,780 62.88×
    mpfr
    		 1,708 102,640 60.08×
    powmath
    		 1,365 87,054 63.79×
    trig
    		 1,875 113,822 60.71×
    veccmp
    		 19,087 1,130,792 59.24×
    vecfp
    		 1,815 106,649 58.75×
    vecmath
    		 4,042 254,507 62.97×
    vecshuf
    		 638.27 39,927 62.56×
    vecwide
    		 28,563 1,531,266 53.61×
    AlgorithmsSingleMultiScaling
    bitonicsort
    		 10.4 631.98 60.77×
    bsearch
    		 304.57 17,901 58.77×
    bubblesort
    		 0.8 51.2 64.00×
    fibsearch
    		 380.56 24,255 63.74×
    heapsort
    		 11 645.58 58.69×
    hsearch
    		 11,315 650,051 57.45×
    insertionsort
    		 13.2 705.79 53.47×
    malloc
    		 3,811,356 110,903,285 29.10×
    mcontend
    		 80.1 9,923 123.88×
    mergesort
    		 34 1,957 57.56×
    qsort
    		 22.2 1,252 56.39×
    skiplist
    		 7,064 425,843 60.28×
    tree
    		 2 107.68 53.84×
    MemorySingleMultiScaling
    cache
    		 759,071 1,236,960 1.63×
    cachehammer
    		 290,196 14,020,990 48.32×
    cacheline
    		 48.78 3,623 74.28×
    l1cache
    		 263.21 16,381 62.24×
    memcpy
    		 448.94 27,042 60.23×
    memrate
    		 3.53 24.78 7.02×
    memthrash
    		 223.59 1,506 6.74×
    ptr-chase
    		 41,283,208 690,629,646 16.73×
    spinmem
    		 222.19 3,378 15.20×
    stream
    		 119.93 36,342 303.03×
    vm
    		 102,046 301,019 2.95×

    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

    PostgreSQL heavy read-only throughput

    Alternatives

    Servers of the Same Family

    INSTANCEvCPUsMEMORYAccelerators
    c3-4 24 GiB0
    c2-7 27 GiB0
    c3-8 48 GiB0
    c2-15 415 GiB0
    c3-16 816 GiB0
    c2-30 830 GiB0
    c3-32 1632 GiB0

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    c3-128 FAQs