b3-640-flex by OVHcloud

b3-640-flex is a General Purpose (160 vCPUs, 640 GiB RAM, 50 GB NVMe) server offered by OVHcloud with 160 vCPUs, 640 GiB of memory and 50 GB of storage. The pricing starts at 4.5883 USD per hour.
160 vCPU
640 GiB Memory
50 GB Storage
Spare SCore
288,900
(All-cores)
3,077
(Single-core)

Specifications

Server Metadata

Vendor ID
ovh
Name
b3-640-flex
Description
General Purpose (160 vCPUs, 640 GiB RAM, 50 GB NVMe)
Family
General Purpose
Hw Virt
Average Time To Start
63
Status
active
Observed At
2026-11-10T01:50:44.128371

Availability

REGION / IDSPOTONDEMAND
AP-SOUTHEAST-SYD-2 (AU) / AP-SOUTHEAST-SYD-2
- 4.5883 USD/h
AP-SOUTH-MUM-1 (IN) / AP-SOUTH-MUM-1
- 4.5883 USD/h
BHS5 (CA) / BHS5
- 4.5883 USD/h
DE1 (DE) / DE1
- 4.5883 USD/h
EU-SOUTH-MIL (IT) / EU-SOUTH-MIL
- 4.5883 USD/h
EU-WEST-PAR (FR) / EU-WEST-PAR
- 4.5883 USD/h
GRA7 (FR) / GRA7
- 4.5883 USD/h
GRA9 (FR) / GRA9
- 4.5883 USD/h
RBX-A (FR) / RBX-A
- 4.5883 USD/h
SBG5 (FR) / SBG5
- 4.5883 USD/h
SBG7 (FR) / SBG7
- 4.5883 USD/h
SGP1 (SG) / SGP1
- 4.5883 USD/h
UK1 (GB) / UK1
- 4.5883 USD/h
WAW1 (PL) / WAW1
- 4.5883 USD/h

Processor

vCPUs
160
Hypervisor
KVM
CPU Allocation
Dedicated
CPU Cores
160
CPU Speed
2.3 GHz
CPU Architecture
x86_64
CPU Manufacturer
AMD
CPU Family
EPYC
CPU L1D Cache
32 KiB
CPU L1D Cache Total
5 MiB
CPU L1I Cache
32 KiB
CPU L1I Cache Total
5 MiB
CPU L2 Cache
512 KiB
CPU L2 Cache Total
80 MiB
CPU L3 Cache
32 MiB
CPU L3 Cache Total
5 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
93.9
Scalability
58.69

System Resources and Accelerators

MEMORY
Memory Amount
640 GiB
Memory Amount Actual
625 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

    5.6Score
    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) 10,713,044 ops/sec 1,922,940 ops/sec 5.8 50.00% 62.00% +200.00%
    Redis RPS (pipeline=16, SET) 92,861,436 ops/sec 11,797,257 ops/sec 7.8 20.00% 25.00% +67.00%
    PassMark Memory Mark (composite) — 2,406 — 10.00% 0.00% —
    Memory bandwidth (read, 16 MB ~ L3) 275,499 MB/sec 108,657 MB/sec 2.5 10.00% 13.00% +13.00%
    PassMark single-thread CPU — 2,365 Mops/s — 10.00% 0.00% —

    Memory Bandwidth

    Compression

    OpenSSL

    Stress-ng Stressors

    CPU integerSingleMultiScaling
    atomic
    		 872.43 197.53 0.23×
    bitops
    		 160,154 14,125,132 88.20×
    branch
    		 213,224 21,542,247 101.03×
    funccall
    		 619.29 59,343 95.82×
    funcret
    		 21,386 1,896,245 88.67×
    hash
    		 163,401 17,812,281 109.01×
    intmath
    		 66,546 7,302,113 109.73×
    nop
    		 626,235 59,317,372 94.72×
    prime
    		 494,664 42,516,587 85.95×
    rotate
    		 88,217 7,857,842 89.07×
    str
    		 1,045,453 83,146,627 79.53×
    wcs
    		 680,304 49,184,460 72.30×
    CryptographySingleMultiScaling
    crypt
    		 3,738 288,702 77.24×
    CompressionSingleMultiScaling
    jpeg
    		 840.11 47,152 56.13×
    zlib
    		 57.09 6,950 121.73×
    HypervisorSingleMultiScaling
    clock
    		 16,492 196,228 11.90×
    clone
    		 300.13 8,937 29.78×
    context
    		 2,813 362,868 128.98×
    cpu-sched
    		 71.57 10,059 140.54×
    eventfd
    		 46,871 3,351,244 71.50×
    fault
    		 10,571 126,866 12.00×
    fork
    		 2,935 61,847 21.07×
    getrandom
    		 50,059 4,551,883 90.93×
    hrtimers
    		 224,051 8,297,014 37.03×
    mprotect
    		 581,137 21,060,993 36.24×
    mtx
    		 38,118,751 7,642,914,673 200.50×
    munmap
    		 2,140 73,145 34.18×
    null
    		 337,117 40,810,526 121.06×
    pipe
    		 361,444 25,147,746 69.58×
    priv-instr
    		 424,385 20,212,075 47.63×
    resched
    		 6,777,113 20,289,466 2.99×
    switch
    		 99,386 10,061,867 101.24×
    timermix
    		 152,395 16,970,525 111.36×
    tlb-shootdown
    		 10,624 156,580 14.74×
    tsc
    		 783,087 115,057,908 146.93×
    usersyscall
    		 323,308 18,411,330 56.95×
    vdso
    		 82,392,063 9,007,679,864 109.33×
    vfork
    		 18,430 87,090 4.73×
    x86syscall
    		 3,827,804 474,003,318 123.83×
    yield
    		 71,340,844 96,138,182 1.35×
    zero
    		 2,665,955 311,465,654 116.83×
    CPU float/SIMDSingleMultiScaling
    eigen
    		 16,342 1,331,313 81.46×
    expmath
    		 3,010 313,322 104.11×
    fma
    		 919,507 88,479,214 96.22×
    fp
    		 251.8 26,288 104.40×
    fractal
    		 7.4 737.57 99.67×
    hyperbolic
    		 3,829 391,346 102.21×
    logmath
    		 4,573 450,076 98.43×
    matrix
    		 4,896 360,842 73.71×
    matrix-3d
    		 957.87 11,433 11.94×
    monte-carlo
    		 161.92 18,133 111.99×
    mpfr
    		 1,701 143,929 84.64×
    powmath
    		 1,342 148,512 110.63×
    trig
    		 1,873 181,717 97.01×
    veccmp
    		 19,046 1,587,156 83.33×
    vecfp
    		 1,815 168,049 92.57×
    vecmath
    		 4,021 422,359 105.05×
    vecshuf
    		 638.51 56,986 89.25×
    vecwide
    		 28,590 2,170,118 75.90×
    AlgorithmsSingleMultiScaling
    bitonicsort
    		 10.4 843.97 81.15×
    bsearch
    		 306.43 27,178 88.69×
    bubblesort
    		 0.8 71.2 89.00×
    fibsearch
    		 379.99 35,176 92.57×
    heapsort
    		 11 978.37 88.94×
    hsearch
    		 11,447 831,574 72.64×
    insertionsort
    		 13 843.39 64.88×
    malloc
    		 3,394,361 218,119,059 64.26×
    mcontend
    		 81.12 23,406 288.54×
    mergesort
    		 34 3,048 89.64×
    qsort
    		 22 1,865 84.75×
    skiplist
    		 7,094 716,789 101.04×
    tree
    		 2 133.32 66.66×
    MemorySingleMultiScaling
    cache
    		 728,297 1,746,852 2.40×
    cachehammer
    		 281,935 19,021,749 67.47×
    cacheline
    		 49.97 4,918 98.43×
    l1cache
    		 247.44 20,505 82.87×
    memcpy
    		 448.79 33,488 74.62×
    memrate
    		 3.73 31.52 8.45×
    memthrash
    		 404.53 118.5 0.29×
    ptr-chase
    		 39,250,525 1,152,735,890 29.37×
    spinmem
    		 210.99 6,707 31.79×
    stream
    		 127.37 189,337 1486.51×
    vm
    		 99,580 426,900 4.29×

    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

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    b3-16-flex 416 GiB0
    b2-30 830 GiB0

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    b3-640-flex FAQs