c3-256-flex by OVHcloud

c3-256-flex is a Compute Optimized (128 vCPUs, 256 GiB RAM, 50 GB NVMe) server offered by OVHcloud with 128 vCPUs, 256 GiB of memory and 50 GB of storage. The pricing starts at 3.2776 USD per hour.
128 vCPU
256 GiB Memory
50 GB Storage
Spare SCore
288,874
(All-cores)
3,078
(Single-core)

Specifications

Server Metadata

Vendor ID
ovh
Name
c3-256-flex
Description
Compute Optimized (128 vCPUs, 256 GiB RAM, 50 GB NVMe)
Family
Compute Optimized
Hw Virt
Average Time To Start
57
Status
active
Observed At
2026-11-10T08:53:09.235959

Availability

REGION / IDSPOTONDEMAND
AP-SOUTHEAST-SYD-2 (AU) / AP-SOUTHEAST-SYD-2
- 3.2776 USD/h
AP-SOUTH-MUM-1 (IN) / AP-SOUTH-MUM-1
- 3.2776 USD/h
BHS5 (CA) / BHS5
- 3.2776 USD/h
EU-SOUTH-MIL (IT) / EU-SOUTH-MIL
- 3.2776 USD/h
EU-WEST-PAR (FR) / EU-WEST-PAR
- 3.2776 USD/h
GRA11 (FR) / GRA11
- 3.2776 USD/h
GRA7 (FR) / GRA7
- 3.2776 USD/h
GRA9 (FR) / GRA9
- 3.2776 USD/h
RBX-A (FR) / RBX-A
- 3.2776 USD/h
SBG5 (FR) / SBG5
- 3.2776 USD/h
SBG7 (FR) / SBG7
- 3.2776 USD/h
SGP1 (SG) / SGP1
- 3.2776 USD/h
SYD1 (AU) / SYD1
- 3.2776 USD/h
UK1 (GB) / UK1
- 3.2776 USD/h
WAW1 (PL) / WAW1
- 3.2776 USD/h

Processor

vCPUs
128
Hypervisor
KVM
CPU Allocation
Dedicated
CPU Cores
128
CPU Speed
2.3 GHz
CPU Architecture
x86_64
CPU Manufacturer
AMD
CPU Family
EPYC
CPU L1D Cache
32 KiB
CPU L1D Cache Total
4 MiB
CPU L1I Cache
32 KiB
CPU L1I Cache Total
4 MiB
CPU L2 Cache
512 KiB
CPU L2 Cache Total
64 MiB
CPU L3 Cache
32 MiB
CPU L3 Cache Total
4 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
93.8
Scalability
73.28

System Resources and Accelerators

MEMORY
Memory Amount
256 GiB
Memory Amount Actual
250 GiB
ACCELERATORS
Accelerator Count
0
Accelerator Memory Min
0 MiB
Accelerator Memory Total
0 MiB
Accelerators
    STORAGE
    Storage Size
    50 GB
    Storage Type
    nvme ssd
    Storages
    • 50 GB nvme ssd
    NETWORK
    Network Speed Baseline
    20 Gbps
    Network Speed Max
    20 Gbps
    Inbound Traffic
    0 GB/month
    Outbound Traffic
    0 GB/month
    IPv4
    0

    CPU and System Topology

    Economics

    Average Price per Region

    Prices per Zone

    Lowest Prices

    Performance

    Workload Profiles

    4.6Score
    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.Partial coverage: missing component benchmark(s): PassMark Memory Mark (composite), PassMark single-thread CPU.
    Component Score Weight Impact
    Raw Reference Normalized Target Actual
    Redis RPS (pipeline=1, SET) 9,711,137 ops/sec 1,921,522 ops/sec 5.1 50.00% 62.00% +170.00%
    Redis RPS (pipeline=16, SET) 88,092,295 ops/sec 11,803,344 ops/sec 7.3 20.00% 25.00% +64.00%
    PassMark Memory Mark (composite) — 2,406 — 10.00% 0.00% —
    Memory bandwidth (read, 16 MB ~ L3) 124,803 MB/sec 108,665 MB/sec 1.1 10.00% 13.00% +1.20%
    PassMark single-thread CPU — 2,365 Mops/s — 10.00% 0.00% —

    Memory Bandwidth

    Compression

    Stress-ng Stressors

    CPU integerSingleMultiScaling
    atomic
    		 943.72 250.91 0.27×
    bitops
    		 160,333 13,815,278 86.17×
    branch
    		 213,176 18,476,622 86.67×
    funccall
    		 619.5 55,461 89.53×
    funcret
    		 20,963 1,796,651 85.70×
    hash
    		 163,480 16,291,835 99.66×
    intmath
    		 66,537 6,826,903 102.60×
    nop
    		 626,400 57,884,335 92.41×
    prime
    		 489,949 40,676,436 83.02×
    rotate
    		 88,311 7,994,085 90.52×
    str
    		 1,048,052 76,834,556 73.31×
    wcs
    		 691,285 46,686,016 67.54×
    CryptographySingleMultiScaling
    crypt
    		 3,740 287,479 76.86×
    CompressionSingleMultiScaling
    jpeg
    		 903.82 37,283 41.25×
    zlib
    		 74.21 6,248 84.19×
    HypervisorSingleMultiScaling
    clock
    		 17,288 203,055 11.75×
    clone
    		 307.53 4,802 15.61×
    context
    		 2,852 315,826 110.76×
    cpu-sched
    		 66.79 7,630 114.24×
    eventfd
    		 46,132 3,667,943 79.51×
    fault
    		 10,570 121,478 11.49×
    fork
    		 2,991 64,993 21.73×
    getrandom
    		 50,664 4,371,845 86.29×
    hrtimers
    		 133,381 8,612,011 64.57×
    mprotect
    		 606,905 19,164,408 31.58×
    mtx
    		 37,599,601 8,334,915,518 221.68×
    munmap
    		 2,124 77,714 36.58×
    null
    		 338,032 35,785,197 105.86×
    pipe
    		 368,404 23,900,528 64.88×
    priv-instr
    		 434,170 17,428,113 40.14×
    resched
    		 6,796,101 18,605,583 2.74×
    switch
    		 119,277 13,902,476 116.56×
    timermix
    		 153,020 15,227,912 99.52×
    tlb-shootdown
    		 13,801 185,476 13.44×
    tsc
    		 783,076 96,941,270 123.80×
    usersyscall
    		 322,796 15,889,793 49.23×
    vdso
    		 82,335,142 8,172,350,128 99.26×
    vfork
    		 20,073 111,118 5.54×
    x86syscall
    		 3,832,267 413,324,331 107.85×
    yield
    		 63,255,742 79,889,639 1.26×
    zero
    		 2,618,558 274,812,438 104.95×
    CPU float/SIMDSingleMultiScaling
    eigen
    		 16,614 1,344,994 80.95×
    expmath
    		 2,995 286,670 95.71×
    fma
    		 920,723 82,148,581 89.22×
    fp
    		 251.69 24,022 95.44×
    fractal
    		 7.4 657.87 88.90×
    hyperbolic
    		 3,817 361,990 94.84×
    logmath
    		 4,562 415,109 91.00×
    matrix
    		 5,007 357,383 71.37×
    matrix-3d
    		 972.52 6,826 7.02×
    monte-carlo
    		 161.77 16,481 101.88×
    mpfr
    		 1,704 139,150 81.66×
    powmath
    		 1,325 132,221 99.78×
    trig
    		 1,863 166,922 89.58×
    veccmp
    		 19,092 1,536,119 80.46×
    vecfp
    		 1,814 154,077 84.94×
    vecmath
    		 4,023 384,105 95.48×
    vecshuf
    		 637.53 55,325 86.78×
    vecwide
    		 28,646 2,076,001 72.47×
    AlgorithmsSingleMultiScaling
    bitonicsort
    		 10.4 817.17 78.57×
    bsearch
    		 306.38 25,455 83.08×
    bubblesort
    		 0.8 65.8 82.25×
    fibsearch
    		 380.39 34,182 89.86×
    heapsort
    		 10.8 896.97 83.05×
    hsearch
    		 11,334 827,919 73.05×
    insertionsort
    		 13 873.39 67.18×
    malloc
    		 3,633,378 194,149,758 53.44×
    mcontend
    		 79.52 19,087 240.03×
    mergesort
    		 33.8 2,807 83.04×
    qsort
    		 21.8 1,753 80.41×
    skiplist
    		 7,028 645,211 91.81×
    tree
    		 2 121.73 60.87×
    MemorySingleMultiScaling
    cache
    		 747,206 1,535,911 2.06×
    cachehammer
    		 283,542 17,814,154 62.83×
    cacheline
    		 43.78 4,674 106.77×
    l1cache
    		 262.34 21,459 81.80×
    memcpy
    		 448.8 34,434 76.73×
    memrate
    		 3.53 23.16 6.56×
    memthrash
    		 352.34 230.42 0.65×
    ptr-chase
    		 39,481,238 939,596,774 23.80×
    spinmem
    		 210.39 5,864 27.87×
    stream
    		 120.01 101,624 846.80×
    vm
    		 93,730 309,506 3.30×

    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
    c3-8-flex 48 GiB0
    c2-15 415 GiB0
    c2-15-flex 415 GiB0
    c3-16 816 GiB0

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    c3-256-flex FAQs