HWBench.com

    Intel Core i3-8120 vs Intel Core i5-8400

    Intel Core i3-8120
    Intel Socket 1151DESKTOP
    3700 MHz / Cores: 4 / Sep 2018
    Intel Core i3-8120

    Intel Core i5-8400
    Intel Socket 1151DESKTOP
    2800 MHz / Cores: 6 / Jan 2018
    Intel Core i5-8400

    Summary

    Synthetic performance index

    • Intel Core i3-8120
      100%
    • Intel Core i5-8400
      112%

    Relative performance

    Single thread performance index

    • Intel Core i3-8120
      100%
    • Intel Core i5-8400
      106%

    Relative performance

    Multi thread performance index

    • Intel Core i3-8120
      100%
    • Intel Core i5-8400
      118%

    Relative performance

    Reasons to consider Intel Core i3-8120

    None

    Reasons to consider Intel Core i5-8400

    6% higher single threaded performance.
    18% higher multi threaded performance.
    Around 12% higher average synthetic performance.
    Intel Core i5-8400

    Gaming

    HWBench recommends Intel Core i5-8400

    Based on game and synthetic benchmarks, and theoretical specifications.
    No winner

    Productivity

    No clear winner declared

    Specifications

    Features

    Intel Core i3-8120Intel Core i5-8400
    MMX
    SSE
    SSE2
    SSE3
    SSSE3
    SSE4.2
    AVX
    AVX2
    EIST
    Intel 64
    XD bit
    VT-x
    VT-d
    AES-NI
    TSX
    TXT
    CLMUL
    FMA3
    F16C
    BMI1
    BMI2
    Boost 2.0

    Architecture

    Intel Core i3-8120Intel Core i5-8400
    ArchitectureIntel_CoffelakevsIntel_Coffelake
    MarketDesktopvsDesktop
    Memory SupportDDR4vsDDR4
    CodenameCoffee LakevsCoffee Lake
    Release DateSep 2018vsJan 2018

    Cores

    Intel Core i3-8120Intel Core i5-8400
    Cores4vs6
    Threads4vs6
    SMPs1vs1
    Integrated GraphicsUHD Graphics 630vsIntel UHD 630

    Cache

    Intel Core i3-8120Intel Core i5-8400
    L1 Cache64 KB (per core)vs64 KB (per core)
    L2 Cache256 KB (per core)vs256 KB (per core)
    L3 Cache6144 KB (shared)vs9216 KB (shared)

    Physical

    Intel Core i3-8120Intel Core i5-8400
    SocketIntel Socket 1151vsIntel Socket 1151
    Max Case Temp72°Cvs72°C
    PackageFC-LGA1151vsFC-LGA1151
    Die Sizeunknownvs151mm²
    Process14 nmvs14 nm

    Performance

    Intel Core i3-8120Intel Core i5-8400
    Cpu Frequency3700 MHzvs2800 MHz
    Turbo Clock Speednonevs4000 MHz
    Base Clock100 MHzvs100 MHz
    Voltagevariablevsunknown
    TDP65 Wvs65 W

    Raw performance index

    Raw single-thread performance estimation

    • Intel Core i3-8120
      4440 points
    • Intel Core i5-8400
      4800 points

    Points - higher is better

    Raw multi-thread performance estimation

    • Intel Core i3-8120
      17760 points
    • Intel Core i5-8400
      20160 points

    Points - higher is better

    Synthetic benchmarks

    Cinebench R15 CPU Single 64Bit

    • Intel Core i3-8120 (simulated)
      159.31
    • Intel Core i5-8400
      170

    points - higher is better

    Cinebench R15 CPU Multi 64Bit

    • Intel Core i3-8120 (simulated)
      790.21
    • Intel Core i5-8400
      939

    points - higher is better

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