b3-640 by OVHcloud

b3-640 is a General Purpose (160 vCPUs, 640 GiB RAM, 400 GB NVMe) server offered by OVHcloud with 160 vCPUs, 640 GiB of memory and 400 GB of storage. The pricing starts at 4.7209 USD per hour.
160 vCPU
640 GiB Memory
400 GB Storage
Spare SCore
288,171
(All-cores)
3,078
(Single-core)

Specifications

Server Metadata

Vendor ID
ovh
Name
b3-640
Description
General Purpose (160 vCPUs, 640 GiB RAM, 400 GB NVMe)
Family
General Purpose
Hw Virt
Status
active
Observed At
2026-09-17T10:13:44.410337

Availability

REGION / IDSPOTONDEMAND
AP-SOUTHEAST-SYD-2 (AU) / AP-SOUTHEAST-SYD-2
- 4.7209 USD/h
AP-SOUTH-MUM-1 (IN) / AP-SOUTH-MUM-1
- 4.7209 USD/h
BHS5 (CA) / BHS5
- 4.7209 USD/h
DE1 (DE) / DE1
- 4.7209 USD/h
EU-SOUTH-MIL (IT) / EU-SOUTH-MIL
- 4.7209 USD/h
EU-WEST-PAR (FR) / EU-WEST-PAR
- 4.7209 USD/h
GRA11 (FR) / GRA11
- 4.7209 USD/h
GRA7 (FR) / GRA7
- 4.7209 USD/h
GRA9 (FR) / GRA9
- 4.7209 USD/h
RBX-A (FR) / RBX-A
- 4.7209 USD/h
SBG5 (FR) / SBG5
- 4.7209 USD/h
SBG7 (FR) / SBG7
- 4.7209 USD/h
SGP1 (SG) / SGP1
- 4.7209 USD/h
SYD1 (AU) / SYD1
- 4.7209 USD/h
UK1 (GB) / UK1
- 4.7209 USD/h
WAW1 (PL) / WAW1
- 4.7209 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
93.6
Scalability
58.5

System Resources and Accelerators

MEMORY
Memory Amount
640 GiB
Memory Amount Actual
625 GiB
GPU
GPU Count
0
GPU Memory Min
0 MiB
GPU Memory Total
0 MiB
GPUs
    STORAGE
    Storage Size
    400 GB
    Storage Type
    nvme ssd
    Storages
    • 400 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
    1

    CPU and System Topology

    Server Description

    A high-density, 160-core dedicated processor platform designed for parallel compute, software compilation, and high-throughput memory operations.

    General PurposeCompute Optimized

    OVHcloud b3-640 is a general-purpose server featuring 160 dedicated physical AMD EPYC cores on the x86_64 architecture, paired with 640 GB of RAM and a 400 GB local NVMe SSD. Operating at 2.3 GHz with a 20 Gbps network baseline, this KVM-based instance delivers top-tier multi-core and memory bandwidth performance, as evidenced by high scores in Passmark CPU and multi-threaded bzip3 decompression benchmarks. However, single-core performance and single-threaded compression tasks remain average. Lacking GPU acceleration, it struggles with large LLM text generation, but excels at highly parallelized workloads. The server is suited for software compilation, in-memory databases, and parallel data processing.

    Economics

    Average Price per Region

    Prices per Zone

    Lowest Prices

    Performance

    Workload Profiles

    4.13Score
    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) 10,782,099 ops/sec 1,919,696 ops/sec 5.62 50.00% 50.00% +137.00%
    Redis RPS (pipeline=16, SET) 95,392,108 ops/sec 11,736,081 ops/sec 8.13 20.00% 20.00% +52.10%
    PassMark Memory Mark (composite) 3,003 2,418 1.24 10.00% 10.00% +2.17%
    Memory bandwidth (read, 16 MB ~ L3) 276,182 MB/sec 108,260 MB/sec 2.55 10.00% 10.00% +9.81%
    PassMark single-thread CPU 2,941 Mops/s 2,365 Mops/s 1.24 10.00% 10.00% +2.17%

    Memory Bandwidth

    Compression

    OpenSSL

    Geekbench Single-Core

    Score: 1,912

    Geekbench Multi-Core

    Score: 20,311

    Passmark CPU Scores

    BENCHMARKSCORE
    Mark
    		 117207
    Compression
    		 2436969
    Encryption
    		 160620
    Extended Instructions
    		 150405
    Floating Point Maths
    		 453501
    Integer Maths
    		 764616
    Physics
    		 18558
    Prime Numbers
    		 1397
    Single Threaded
    		 2941
    String Sorting
    		 340318

    Passmark Memory Scores

    BENCHMARKSCORE
    Memory Mark
    		 3003
    Database Operations
    		 30806
    Memory Latency
    		 72
    Memory Read Cached
    		 27856
    Memory Read Uncached
    		 26728
    Memory Write
    		 25964

    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

    Alternatives

    Servers of the Same Family

    INSTANCEvCPUsMEMORYGPUs
    b2-7 27 GiB0
    b3-8 28 GiB0
    b2-15 415 GiB0
    b3-16 416 GiB0
    b2-30 830 GiB0
    b3-32 832 GiB0
    b2-60 1660 GiB0

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    b3-640 FAQs