Intel Core i3-8100B

Laptop CPUIntel

Also called intel core i3-8100b, core i3-8100b, i3-8100b, core-i3-8100b

IntelLaptop CPUCoffee Lake

Intel Core i3 laptop processor on Coffee Lake, with 4 cores and 4 threads and 6 MB L3 at 65 W TDP on a 14 nm process addressing up to 64 GB and Intel UHD Graphics 630.

What you need to know

Intel Core i3-8100B is a legacy laptop cpu.

Intel Core i3-8100B launched in July 1, 2018., It has 4 cores and 4 threads on Coffee Lake, dropping into the FCBGA1440 socket. Treat the spec table as the facts. Age alone does not tell you to throw it out.

Still good?: Only if the workload is light
Product age: 8 years old
Upgrade pressure: Moderate

Feex says

Laptop SKUs are power-limited. The name on the lid is not the same chip you would get on a desktop board.

What this hardware means today

Age and usefulness are not the same number. This page keeps them separate.

Performance today: Average. Laptop performance depends on the OEM power limit as much as this SKU name.
Product age 8 years old: Legacy. Launched July 1, 2018. Newer platforms exist. That does not make this chip unusable by itself.
Support status: Supported. Current Windows and current applications still run on this class of CPU. Platform BIOS support depends on the motherboard or laptop vendor.
Upgrade pressure: Moderate. Upgrade pressure comes from platform features and specific CPU-bound work, not from the chip being unusable.

Where does it sit?

Coffee Lake sits on Intel's recent Core timeline. Later desktop branding moved toward Core Ultra.

11th Gen

12th Gen

13th Gen

14th Gen

Core Ultra

Performance context

These are qualitative readings, not a fake 8.7 out of 10. Workload still wins.

Gaming: Good

Fine when the laptop GPU is the limit. CPU names on thin laptops often are not.

Productivity: Average

4 cores cover office, browser, and compile work in this class.

Multithreaded workloads: Average

4 threads. Heavy encodes still scale further on higher-core parts.

General use: Good

Everyday Windows use is not where most people notice this SKU first.

Efficiency: Depends on the laptop

The same SKU in two laptops can draw very different power. Read the device, not the CPU name alone.

Should you upgrade?

Probably not based on CPU performance alone.

Upgrade makes more sense if

Your workload is strongly CPU limited
You need a newer platform for memory, I/O, or chipset features
You need substantially more multicore performance
You are buying a whole new laptop anyway

Upgrade makes less sense if

The GPU is the real bottleneck
Current applications are already responsive
The CPU rarely limits your workload

Specifications

Figures below follow the Feex Hardware Database record for this SKU. Fields without a recorded value are omitted.

Processor

Intel Core i3-8100B is built on Coffee Lake using a 14 nm process.

Intel Core i3-8100B specifications: Processor
Manufacturer	Intel
Family	Core i3
Architecture	Coffee Lake
Generation	8th Generation Intel Core i3 Processors
Manufacturing process	14 nm
Segment	Laptop

Cores and threads

Intel Core i3-8100B has 4 cores and 4 threads.

Intel Core i3-8100B specifications: Cores and threads
Cores	4
Threads	4

Clock speeds

Base clock is 3.6 GHz.

Intel Core i3-8100B specifications: Clock speeds
Base frequency	3.6 GHz

Cache

Cache on this sheet is 6 MB L3.

Intel Core i3-8100B specifications: Cache
L3 cache	6 MB
Total cache	6 MB

Memory

Intel Core i3-8100B addresses 64 GB across 2 memory channels.

Intel Core i3-8100B specifications: Memory
Supported types	DDR4
Max capacity	64 GB
Channels	2

Package and power

Intel Core i3-8100B uses the FCBGA1440 socket and a 65 W TDP.

Intel Core i3-8100B specifications: Package and power
Socket	FCBGA1440
TDP	65 W
PCIe	Revision 3.0, 16 lanes

Integrated graphics

Intel Core i3-8100B includes Intel UHD Graphics 630.

Intel Core i3-8100B specifications: Integrated graphics
Integrated graphics	Intel UHD Graphics 630

Market

Intel Core i3-8100B launched July 1, 2018.

Intel Core i3-8100B specifications: Market
Launch date	July 1, 2018
Model	i3-8100B

Features

Intel Core i3-8100B records 20 instruction sets on this sheet.

Intel Core i3-8100B specifications: Features
Instruction sets	AES-NIAVX2AVXFMA64-bit (x86-64)BMI1BMI2F16CPCLMULQDQRDRANDRDSEEDSSE4.1SSE4.2x86-64-v3SSESSE2SSE3SSSE3x86-64-v2MMX
Security	Execute Disable (NX)Boot GuardHardware RNGOS GuardSGXTrusted Execution
Virtualization	Extended Page Tables (EPT)VT-d (DMA Remapping)VT-x (Hardware Virtualization)Second-Level Address Translation

Compatibility

Compatibility
Socket	FCBGA1440
Board	A shared socket is not automatic compatibility. Check the motherboard CPU list and BIOS revision.
Memory	DDR4, up to 64 GB
Graphics	Intel UHD Graphics 630

A shared socket is not automatic compatibility. Boards often need a BIOS update before a newer chip in the same socket will post.

Laptop power limits, cooling, and the OEM firmware matter as much as the model name.

Read the memory list on the board. The CPU can list more standards than one motherboard will accept.

No post after a CPU swap

Clear CMOS only after you confirm the board list includes this SKU and the BIOS is new enough. A supported name on a box is not the same as a flashed board.

Sources and verification

Reviewed by Feex editorial. Last verified August 2026 Status: Partially Verified. How we research.

Feex Hardware Database · Specification source used for this sheet. CC BY 4.0.

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