Intel® Core™ i5-8400B

The Intel Core i5-8400B is a laptop processor with 6 cores and 6 threads, built on the Coffee Lake architecture (14 nm process). It launched in Apr 2018. Clocks run from 2.8 GHz base to 4.0 GHz boost. A 9-MB L3 cache backs the cores (1.8 MB per core). It addresses DDR4 memory up to 64 GB across 2 channels. The chip drops into the FCBGA1440 socket and exposes PCIe 3.0 (16 lanes). Rated TDP is 65 W. Notable platform capabilities: Extended Page Tables (EPT).

The Intel Core i5-8400B has 6 physical cores and runs 6 logical threads. It does not support simultaneous multithreading, so its thread count equals its core count. It runs at a base clock of 2.80 GHz and boosts up to 4.00 GHz.

The Intel Core i5-8400B is a laptop processor, belongs to the Intel Core i5 family, uses the Coffee Lake architecture, carries the codename Coffee Lake and is manufactured on a 14 nm process. It launched in Apr 2018.

The Intel Core i5-8400B has 384 KB of L1 cache, 1.50 MB of L2 cache and 9 MB of L3 cache. That adds up to about 10.9 MB of cache, or 1.81 MB per core. Each core has 256 KB of private L2 cache.

The Intel Core i5-8400B has a 3-level cache hierarchy: L1 at 384 KB, L2 at 1.5 MB and L3 at 9 MB. L3 is the largest level and makes up about 83% of the cache listed here.

The Intel Core i5-8400B supports DDR4 memory, addresses up to 64 GB of memory, uses 2 memory channels, runs memory at up to 2,666 MT/s and delivers up to 42.7 GB/s of memory bandwidth. It does not support DDR5 and LPDDR memory.

The Intel Core i5-8400B includes integrated graphics (Intel UHD Graphics 630) and clocks the graphics up to 1.05 GHz.

The Intel Core i5-8400B uses the FCBGA1440 socket, supports PCI Express 3.0 and provides up to 16 PCIe lanes.

The Intel Core i5-8400B has a rated TDP of 65 W.

Instruction sets, security, virtualization, AI acceleration and OS readiness. Features are listed as supported, explicitly not supported, or not recorded; a feature that is not recorded is not the same as unsupported.

The Intel Core i5-8400B is also identified by the model number i5-8400B.

Feex has recorded 49% of the specifications it tracks for the Intel Core i5-8400B. Values Feex does not hold are shown as "Not recorded" rather than estimated.

Not recorded: Core Configuration: Performance Cores, Efficiency Cores, Hybrid Architecture, All-Core Boost and Unlocked Multiplier. Architecture & Generation: ISA Family and Market Status. Cache: L4 Cache. Memory Support: ECC Memory. Graphics: Execution Units, Display Outputs and Max Video Memory. Platform & Compatibility: Package and Package Size. Power & Thermals: Base Power, Maximum Turbo Power, Configurable TDP (Min), Configurable TDP (Max), Max Junction Temperature and Tcase. Physical & Manufacturing: Transistor Count, Die Size, Die Count, Foundry and Launch Price. Naming & Aliases: Normalized Name, SKU, Processor Number and Part Number. Performance: single-core and multi-core ratings and all computed performance metrics.

Processors close to the Intel Core i5-8400B in the Feex database, matched by socket, family, segment, architecture, core count, TDP and benchmark scores, include Intel Core i5-14450HX, Intel Core i5-14401EF, Intel Core i5-14500HX, Intel Core i5-1335U and Intel Core i5-1334U.