b2-15-flex by OVHcloud

b2-15-flex is a General Purpose (4 vCPUs, 15 GiB RAM, 50 GB SSD) server offered by OVHcloud with 4 vCPUs, 15 GiB of memory and 50 GB of storage. The pricing starts at 0.1502 USD per hour.
4 vCPU
15 GiB Memory
50 GB Storage
Spare SCore
4,371
(All-cores)
1,110
(Single-core)

Specifications

Server Metadata

Vendor ID
ovh
Name
b2-15-flex
Description
General Purpose (4 vCPUs, 15 GiB RAM, 50 GB SSD)
Family
General Purpose
Hw Virt
Average Time To Start
88
Status
active
Observed At
2026-11-10T05:14:59.054532

Availability

REGION / IDSPOTONDEMAND
BHS5 (CA) / BHS5
- 0.1502 USD/h
DE1 (DE) / DE1
- 0.1502 USD/h
GRA11 (FR) / GRA11
- 0.1502 USD/h
GRA7 (FR) / GRA7
- 0.1502 USD/h
GRA9 (FR) / GRA9
- 0.1502 USD/h
RBX-A (FR) / RBX-A
- 0.1502 USD/h
SBG5 (FR) / SBG5
- 0.1502 USD/h
SBG7 (FR) / SBG7
- 0.1502 USD/h
SGP1 (SG) / SGP1
- 0.1502 USD/h
SYD1 (AU) / SYD1
- 0.1502 USD/h
UK1 (GB) / UK1
- 0.1502 USD/h
WAW1 (PL) / WAW1
- 0.1502 USD/h

Processor

vCPUs
4
Hypervisor
KVM
CPU Allocation
Dedicated
CPU Cores
4
CPU Speed
2 GHz
CPU Architecture
x86_64
CPU Manufacturer
Intel
CPU Model
(Haswell, no TSX)
CPU L1D Cache
32 KiB
CPU L1D Cache Total
128 KiB
CPU L1I Cache
32 KiB
CPU L1I Cache Total
128 KiB
CPU L2 Cache
4 MiB
CPU L2 Cache Total
16 MiB
CPU L3 Cache
16 MiB
CPU L3 Cache Total
64 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, syscall, nx, rdtscp, lm, constant_tsc, rep_good, nopl, xtopology, cpuid, tsc_known_freq, pni, pclmulqdq, vmx, ssse3, fma, cx16, pcid, sse4_1, sse4_2, x2apic, movbe, popcnt, tsc_deadline_timer, aes, xsave, avx, f16c, rdrand, hypervisor, lahf_lm, abm, cpuid_fault, pti, tpr_shadow, flexpriority, ept, vpid, ept_ad, fsgsbase, bmi1, avx2, smep, bmi2, erms, invpcid, xsaveopt, arat, vnmi, md_clear
Ecpus
3.9
Scalability
97.5

System Resources and Accelerators

MEMORY
Memory Amount
15 GiB
Memory Amount Actual
15 GiB
ACCELERATORS
Accelerator Count
0
Accelerator Memory Min
0 MiB
Accelerator Memory Total
0 MiB
Accelerators
    STORAGE
    Storage Size
    50 GB
    Storage Type
    ssd
    Storages
    • 50 GB ssd
    NETWORK
    Network Speed Baseline
    0.25 Gbps
    Network Speed Max
    1 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

    0.3Score
    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) 410,662 ops/sec 1,921,522 ops/sec 0.22 50.00% 50.00% -53.00%
    Redis RPS (pipeline=16, SET) 2,740,574 ops/sec 11,803,344 ops/sec 0.23 20.00% 20.00% -25.00%
    PassMark Memory Mark (composite) 1,700 2,406 0.71 10.00% 10.00% -3.40%
    Memory bandwidth (read, 16 MB ~ L3) 44,635 MB/sec 108,665 MB/sec 0.41 10.00% 10.00% -8.50%
    PassMark single-thread CPU 1,588 Mops/s 2,365 Mops/s 0.67 10.00% 10.00% -3.90%

    Memory Bandwidth

    Compression

    OpenSSL

    Geekbench Single-Core

    Score: 845

    Geekbench Multi-Core

    Score: 2,654

    Passmark CPU Scores

    BENCHMARKSCORE
    Mark
    		 4,915
    Compression
    		 63,603
    Encryption
    		 1,621
    Extended Instructions
    		 4,092
    Floating Point Maths
    		 10,007
    Integer Maths
    		 12,562
    Physics
    		 593
    Prime Numbers
    		 38
    Single Threaded
    		 1,588
    String Sorting
    		 7,705

    Passmark Memory Scores

    BENCHMARKSCORE
    Memory Mark
    		 1,700
    Database Operations
    		 1,992
    Memory Latency
    		 67
    Memory Read Cached
    		 19,021
    Memory Read Uncached
    		 7,879
    Memory Write
    		 8,249

    Stress-ng Stressors

    CPU integerSingleMultiScaling
    atomic
    		 135.53 143.71 1.06×
    bitops
    		 84,311 335,353 3.98×
    branch
    		 120,995 479,903 3.97×
    funccall
    		 432.69 1,644 3.80×
    funcret
    		 9,000 34,929 3.88×
    hash
    		 99,759 386,215 3.87×
    intmath
    		 17,400 68,415 3.93×
    nop
    		 150,744 584,873 3.88×
    prime
    		 245,648 957,832 3.90×
    rotate
    		 76,109 298,573 3.92×
    str
    		 533,731 1,995,482 3.74×
    wcs
    		 379,028 1,409,274 3.72×
    CryptographySingleMultiScaling
    crypt
    		 1,869 7,460 3.99×
    CompressionSingleMultiScaling
    jpeg
    		 443.33 1,688 3.81×
    zlib
    		 45.34 124.36 2.74×
    HypervisorSingleMultiScaling
    clock
    		 22,151 67,116 3.03×
    clone
    		 252.03 652.52 2.59×
    context
    		 1,622 6,367 3.93×
    cpu-sched
    		 57.52 264.18 4.59×
    eventfd
    		 41,336 221,447 5.36×
    fault
    		 8,008 24,720 3.09×
    fork
    		 2,128 9,967 4.68×
    getrandom
    		 35,356 137,512 3.89×
    hrtimers
    		 137,126 333,083 2.43×
    mprotect
    		 488,339 682,813 1.40×
    mtx
    		 8,956,990 97,916,707 10.93×
    munmap
    		 1,775 6,423 3.62×
    null
    		 166,708 640,793 3.84×
    pipe
    		 246,516 1,309,741 5.31×
    priv-instr
    		 366,561 1,298,167 3.54×
    resched
    		 870,026 456,993 0.53×
    switch
    		 116,456 598,539 5.14×
    timermix
    		 162,067 663,235 4.09×
    tlb-shootdown
    		 6,570 10,978 1.67×
    tsc
    		 790,954 3,059,733 3.87×
    usersyscall
    		 265,685 964,587 3.63×
    vdso
    		 53,847,449 203,443,893 3.78×
    vfork
    		 16,628 55,422 3.33×
    x86syscall
    		 1,958,306 7,387,821 3.77×
    yield
    		 2,058,048 2,115,009 1.03×
    zero
    		 1,243,691 4,871,961 3.92×
    CPU float/SIMDSingleMultiScaling
    eigen
    		 12,743 49,018 3.85×
    expmath
    		 2,216 8,369 3.78×
    fma
    		 445,278 1,745,635 3.92×
    fp
    		 97.91 376.94 3.85×
    fractal
    		 4 14.8 3.70×
    hyperbolic
    		 2,203 8,668 3.93×
    logmath
    		 3,571 13,862 3.88×
    matrix
    		 2,516 9,827 3.91×
    matrix-3d
    		 407.87 1,247 3.06×
    monte-carlo
    		 86.02 340.28 3.96×
    mpfr
    		 898.26 3,537 3.94×
    powmath
    		 1,251 4,852 3.88×
    trig
    		 1,374 5,298 3.86×
    veccmp
    		 12,279 47,286 3.85×
    vecfp
    		 1,037 4,033 3.89×
    vecmath
    		 1,768 6,722 3.80×
    vecshuf
    		 426.62 1,712 4.01×
    vecwide
    		 18,894 70,950 3.76×
    AlgorithmsSingleMultiScaling
    bitonicsort
    		 5.6 21.6 3.86×
    bsearch
    		 184.66 717.38 3.88×
    bubblesort
    		 0.6 2.2 3.67×
    fibsearch
    		 193.77 745.91 3.85×
    heapsort
    		 6.4 25 3.91×
    hsearch
    		 3,796 14,392 3.79×
    insertionsort
    		 6.4 24.6 3.84×
    malloc
    		 1,270,021 6,247,697 4.92×
    mcontend
    		 121.32 823.16 6.79×
    mergesort
    		 18.6 68.4 3.68×
    qsort
    		 11.4 43.2 3.79×
    skiplist
    		 3,821 14,866 3.89×
    tree
    		 0.8 3.2 4.00×
    MemorySingleMultiScaling
    cache
    		 241,866 326,718 1.35×
    cachehammer
    		 318,642 1,688,597 5.30×
    cacheline
    		 15.42 60.58 3.93×
    l1cache
    		 168.88 703.83 4.17×
    memcpy
    		 276.36 1,076 3.89×
    memrate
    		 1.16 3.67 3.16×
    memthrash
    		 55.47 162.7 2.93×
    ptr-chase
    		 12,868,395 35,838,564 2.79×
    spinmem
    		 87.16 58.77 0.67×
    stream
    		 59.21 1,041 17.59×
    vm
    		 28,238 250,904 8.89×

    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
    b2-7 27 GiB0
    b3-8 28 GiB0
    b2-15 415 GiB0
    b3-16 416 GiB0
    b3-16-flex 416 GiB0
    b2-30 830 GiB0
    b2-30-flex 830 GiB0

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    b2-15-flex FAQs