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Core i5-8400B - Intel
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Core i5-8400B
General Info
DesignerIntel
ManufacturerIntel
Model Numberi5-8400B
General Specs
FamilyCore i5
Seriesi5-8000
LockedYes
Bus typeDMI 3.0
Bus rate4 × 8 GT/s
Microarchitecture
ISAx86-64 (x86)
MicroarchitectureCoffee Lake
Core NameCoffee Lake S
Process14 nm
TechnologyCMOS
Die126 mm²
Word Size64 bit
Cores6
Threads6
Max CPUs1 (Uniprocessor)
Max Memory64 GiB

Core i5-8400B is a 64-bit hexa-core mid-range performance x86 microprocessor set to be introduced by Intel in 2018. This processor, which is based on the Coffee Lake microarchitecture, is manufactured on Intel's 3rd generation enhanced 14nm++ process.


DIL16 Blank.svg 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[edit]

Main article: Coffee Lake § Cache

[Edit/Modify Cache Info]

hierarchy icon.svg
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
0.377 MiB
395,264 B
3.681183e-4 GiB
L1I$192 KiB
0.188 MiB
196,608 B
1.831055e-4 GiB
6x32 KiB8-way set associative 
L1D$192 KiB
0.188 MiB
196,608 B
1.831055e-4 GiB
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$9 MiB
9,216 KiB
9,437,184 B
0.00879 GiB
  6x1.5 MiB12-way set associativewrite-back
Facts about "Core i5-8400B - Intel"
bus links4 +
bus rate8,000 MT/s (8 GT/s, 8,000,000 kT/s) +
bus typeDMI 3.0 +
core count6 +
core nameCoffee Lake S +
designerIntel +
die area126 mm² (0.195 in², 1.26 cm², 126,000,000 µm²) +
familyCore i5 +
full page nameintel/core i5/i5-8400b +
has locked clock multipliertrue +
instance ofmicroprocessor +
isax86-64 +
isa familyx86 +
l1$ size0.377 MiB (386 KiB, 395,264 B, 3.681183e-4 GiB) +
l1d$ description8-way set associative +
l1d$ size0.188 MiB (192 KiB, 196,608 B, 1.831055e-4 GiB) +
l1i$ description8-way set associative +
l1i$ size0.188 MiB (192 KiB, 196,608 B, 1.831055e-4 GiB) +
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) +
ldate3000 +
manufacturerIntel +
max cpu count1 +
max memory65,536 MiB (67,108,864 KiB, 68,719,476,736 B, 64 GiB, 0.0625 TiB) +
microarchitectureCoffee Lake +
model numberi5-8400B +
nameCore i5-8400B +
process14 nm (0.014 μm, 1.4e-5 mm) +
seriesi5-8000 +
technologyCMOS +
thread count6 +
word size64 bit (8 octets, 16 nibbles) +