Revision as of 11:43, 4 April 2018

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Core i5-8400B
General Info
Designer	Intel
Manufacturer	Intel
Model Number	i5-8400B
Market	Mobile
Introduction	April 2, 2018 (announced) April 2, 2018 (launched)
Release Price	$182
Shop	Amazon
General Specs
Family	Core i5
Series	i5-8000
Locked	Yes
Frequency	2,800 MHz
Turbo Frequency	4,000 MHz (1 core)
Bus type	DMI 3.0
Bus rate	4 × 8 GT/s
Clock multiplier	28
Microarchitecture
ISA	x86-64 (x86)
Microarchitecture	Coffee Lake
Core Name	Coffee Lake S
Process	14 nm
Technology	CMOS
Die	126 mm²
Word Size	64 bit
Cores	6
Threads	6
Max Memory	64 GiB
Multiprocessing
Max SMP	1-Way (Uniprocessor)

Core i5-8400B is a 64-bit hexa-core mid-range performance x86 desktop microprocessor introduced by Intel in early 2018. This processor, which is based on the Coffee Lake microarchitecture, is manufactured on Intel's 3rd generation enhanced 14nm++ process. The i5-8400B operates at a 2.8 GHz with a TDP of 65 W and a Turbo Boost frequency of up to 4 GHz. This chip supports up to 64 GiB of dual-channel non-ECC DDR4-2666 memory and incorporates Intel's UHD Graphics 630 IGP operating at 350 MHz with a burst frequency of 1.05 GHz.

Preliminary Data! Information presented in this article deal with a microprocessor or chip that was recently announced or leaked, thus missing information regarding its features and exact specification. Information may be incomplete and can change by final release.

Cache

Main article: Coffee Lake § Cache

[Edit/Modify Cache Info]

Cache Organization Cache is a hardware component containing a relatively small and extremely fast memory designed to speed up the performance of a CPU by preparing ahead of time the data it needs to read from a relatively slower medium such as main memory. The organization and amount of cache can have a large impact on the performance, power consumption, die size, and consequently cost of the IC. Cache is specified by its size, number of sets, associativity, block size, sub-block size, and fetch and write-back policies. Note: All units are in kibibytes and mebibytes.

L1$ 386 KiB 395,264 B 0.377 MiB L1I$ 192 KiB 196,608 B 0.188 MiB 6x32 KiB 8-way set associative   L1D$ 192 KiB 196,608 B 0.188 MiB 6x32 KiB 8-way set associative write-back L2$ 1.5 MiB 1,536 KiB 1,572,864 B 0.00146 GiB     6x256 KiB 4-way set associative write-back L3$ 9 MiB 9,216 KiB 9,437,184 B 0.00879 GiB     6x1.5 MiB 12-way set associative write-back

Memory controller

[Edit/Modify Memory Info]

	Integrated Memory Controller
	Max Type DDR4-2666 Supports ECC No Max Mem 64 GiB Controllers 1 Channels 2 Max Bandwidth 39.74 GiB/s 40,693.76 MiB/s 42.671 GB/s 42,670.5 MB/s 0.0388 TiB/s 0.0427 TB/s Bandwidth Single 19.87 GiB/s Double 39.74 GiB/s

Expansions

[Edit/Modify Expansions Info]

	Expansion Options
PCIe Revision: 3.0 Max Lanes: 16 Configuration: 1x16, 2x8, 1x8+2x4

Graphics