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Core i5-8400B - Intel
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Core i5-8400B
coffee lake h (front).png
General Info
DesignerIntel
ManufacturerIntel
Model Numberi5-8400B
MarketMobile
IntroductionApril 2, 2018 (announced)
April 2, 2018 (launched)
Release Price$182
ShopAmazon
General Specs
FamilyCore i5
Seriesi5-8000
LockedYes
Frequency2,800 MHz
Turbo Frequency4,000 MHz (1 core)
Bus typeDMI 3.0
Bus rate4 × 8 GT/s
Clock multiplier28
Microarchitecture
ISAx86-64 (x86)
MicroarchitectureCoffee Lake
Core NameCoffee Lake H
Process14 nm
TechnologyCMOS
Die126 mm²
Word Size64 bit
Cores6
Threads6
Max Memory64 GiB
Multiprocessing
Max SMP1-Way (Uniprocessor)
Electrical
TDP65 W

Core i5-8400B is a 64-bit hexa-core mid-range performance x86 mobile 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.

Cache

Main article: Coffee Lake § Cache

[Edit/Modify Cache Info]

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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$384 KiB
393,216 B
0.375 MiB
L1I$192 KiB
196,608 B
0.188 MiB
6x32 KiB8-way set associative 
L1D$192 KiB
196,608 B
0.188 MiB
6x32 KiB8-way set associativewrite-back
L2$1.5 MiB
1,536 KiB
1,572,864 B
0.00146 GiB
  6x256 KiB4-way set associativewrite-back
L3$9 MiB
9,216 KiB
9,437,184 B
0.00879 GiB
  6x1.5 MiB12-way set associativewrite-back

Memory controller

[Edit/Modify Memory Info]

ram icons.svg
Integrated Memory Controller
Max TypeDDR4-2666
Supports ECCNo
Max Mem64 GiB
Controllers1
Channels2
Max Bandwidth39.74 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]

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


Graphics

[Edit/Modify IGP Info]

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Integrated Graphics Information
GPUUHD Graphics 630
DesignerIntelDevice ID0x3E9B
Execution Units24Max Displays3
Max Memory64 GiB
65,536 MiB
67,108,864 KiB
68,719,476,736 B
Frequency350 MHz
0.35 GHz
350,000 KHz
Burst Frequency1,050 MHz
1.05 GHz
1,050,000 KHz
OutputDP, eDP, HDMI, DVI
Max Resolution
HDMI4096x2304 @24 Hz
DP4096x2304 @60 Hz
eDP4096x2304 @60 Hz
Standards
DirectX12
OpenGL4.5
OpenCL2.0
DP1.2
eDP1.4
HDMI1.4a
Additional Features
Intel Quick Sync Video
Intel InTru 3D
Intel Clear Video
Intel Clear Video HD

Features

[Edit/Modify Supported Features]

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Supported x86 Extensions & Processor Features
MMXMMX Extension
EMMXExtended MMX Extension
SSEStreaming SIMD Extensions
SSE2Streaming SIMD Extensions 2
SSE3Streaming SIMD Extensions 3
SSSE3Supplemental SSE3
SSE4.1Streaming SIMD Extensions 4.1
SSE4.2Streaming SIMD Extensions 4.2
AVXAdvanced Vector Extensions
AVX2Advanced Vector Extensions 2
ABMAdvanced Bit Manipulation
BMI1Bit Manipulation Instruction Set 1
BMI2Bit Manipulation Instruction Set 2
FMA33-Operand Fused-Multiply-Add
AESAES Encryption Instructions
RdRandHardware RNG
ADXMulti-Precision Add-Carry
CLMULCarry-less Multiplication Extension
F16C16-bit Floating Point Conversion
x86-1616-bit x86
x86-3232-bit x86
x86-6464-bit x86
RealReal Mode
ProtectedProtected Mode
SMMSystem Management Mode
FPUIntegrated x87 FPU
NXNo-eXecute
TBT 2.0Turbo Boost Technology 2.0
EISTEnhanced SpeedStep Technology
VT-xVT-x (Virtualization)
VT-dVT-d (I/O MMU virtualization)
EPTExtended Page Tables (SLAT)
MPXMemory Protection Extensions
SGXSoftware Guard Extensions
Secure KeySecure Key Technology
SMEPOS Guard Technology
IPTIdentity Protection Technology
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Facts about "Core i5-8400B - Intel"
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Core i5-8400B - Intel#pcie +
base frequency2,800 MHz (2.8 GHz, 2,800,000 kHz) +
bus links4 +
bus rate8,000 MT/s (8 GT/s, 8,000,000 kT/s) +
bus typeDMI 3.0 +
clock multiplier28 +
core count6 +
core nameCoffee Lake H +
designerIntel +
device id0x3E9B +
die area126 mm² (0.195 in², 1.26 cm², 126,000,000 µm²) +
familyCore i5 +
first announcedApril 2, 2018 +
first launchedApril 2, 2018 +
full page nameintel/core i5/i5-8400b +
has advanced vector extensionstrue +
has advanced vector extensions 2true +
has ecc memory supportfalse +
has extended page tables supporttrue +
has featureAdvanced Vector Extensions +, Advanced Vector Extensions 2 +, Advanced Encryption Standard Instruction Set Extension +, Enhanced SpeedStep Technology +, Intel VT-x +, Intel VT-d +, Secure Key Technology +, Identity Protection Technology +, Turbo Boost Technology 2.0 +, OS Guard +, Extended Page Tables +, Software Guard Extensions + and Memory Protection Extensions +
has intel enhanced speedstep technologytrue +
has intel identity protection technology supporttrue +
has intel secure key technologytrue +
has intel supervisor mode execution protectiontrue +
has intel turbo boost technology 2 0true +
has intel vt-d technologytrue +
has intel vt-x technologytrue +
has locked clock multipliertrue +
has second level address translation supporttrue +
has x86 advanced encryption standard instruction set extensiontrue +
instance ofmicroprocessor +
integrated gpuUHD Graphics 630 +
integrated gpu base frequency350 MHz (0.35 GHz, 350,000 KHz) +
integrated gpu designerIntel +
integrated gpu execution units24 +
integrated gpu max frequency1,050 MHz (1.05 GHz, 1,050,000 KHz) +
integrated gpu max memory65,536 MiB (67,108,864 KiB, 68,719,476,736 B, 64 GiB) +
isax86-64 +
isa familyx86 +
l1$ size384 KiB (393,216 B, 0.375 MiB) +
l1d$ description8-way set associative +
l1d$ size192 KiB (196,608 B, 0.188 MiB) +
l1i$ description8-way set associative +
l1i$ size192 KiB (196,608 B, 0.188 MiB) +
l2$ description4-way set associative +
l2$ size1.5 MiB (1,536 KiB, 1,572,864 B, 0.00146 GiB) +
l3$ description12-way set associative +
l3$ size9 MiB (9,216 KiB, 9,437,184 B, 0.00879 GiB) +
ldateApril 2, 2018 +
main imageFile:coffee lake h (front).png +
manufacturerIntel +
market segmentMobile +
max cpu count1 +
max memory65,536 MiB (67,108,864 KiB, 68,719,476,736 B, 64 GiB, 0.0625 TiB) +
max memory bandwidth39.74 GiB/s (40,693.76 MiB/s, 42.671 GB/s, 42,670.5 MB/s, 0.0388 TiB/s, 0.0427 TB/s) +
max memory channels2 +
microarchitectureCoffee Lake +
model numberi5-8400B +
nameCore i5-8400B +
process14 nm (0.014 μm, 1.4e-5 mm) +
release price$ 182.00 (€ 163.80, £ 147.42, ¥ 18,806.06) +
seriesi5-8000 +
smp max ways1 +
supported memory typeDDR4-2666 +
tdp65 W (65,000 mW, 0.0872 hp, 0.065 kW) +
technologyCMOS +
thread count6 +
turbo frequency (1 core)4,000 MHz (4 GHz, 4,000,000 kHz) +
word size64 bit (8 octets, 16 nibbles) +
x86/has memory protection extensionstrue +
x86/has software guard extensionstrue +