Intel Celeron G3900

Desktop CPUIntel

Also called intel celeron g3900, celeron g3900, g3900, celeron-g3900

IntelDesktop CPUSkylake

Intel Celeron desktop processor on Skylake, with 2 cores and 2 threads and 2 MB L3 at 51 W TDP on a 14 nm process addressing up to 64 GB and Intel HD Graphics 510.

What you need to know

Intel Celeron G3900 is a legacy desktop cpu.

Intel Celeron G3900 launched in October 1, 2015., It has 2 cores and 2 threads on Skylake, dropping into the FCLGA1151 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: 10 years old
Upgrade pressure: Moderate

Feex says

If apps already feel slow, check RAM and storage before you blame this CPU by name alone.

What this hardware means today

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

Performance today: Modest. Modest for the class when RAM, storage, and the GPU keep up.
Product age 10 years old: Legacy. Launched October 1, 2015. 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?

Skylake 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

Playable in lighter titles. A weak GPU will hide whatever this chip still has.

Productivity: Modest

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

Multithreaded workloads: Average

2 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: Good

Rated 51 W base power. That is a platform number, not a promise about your cooler.

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 need newer connectivity that your current board cannot offer

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 Celeron G3900 is built on Skylake using a 14 nm process.

Intel Celeron G3900 specifications: Processor
Manufacturer	Intel
Family	Celeron
Architecture	Skylake
Generation	Intel Celeron Processor G Series
Manufacturing process	14 nm
Segment	Desktop

Cores and threads

Intel Celeron G3900 has 2 cores and 2 threads.

Intel Celeron G3900 specifications: Cores and threads
Cores	2
Threads	2

Clock speeds

Base clock is 2.8 GHz.

Intel Celeron G3900 specifications: Clock speeds
Base frequency	2.8 GHz

Cache

Cache on this sheet is 2 MB L3.

Intel Celeron G3900 specifications: Cache
L3 cache	2 MB
Total cache	2 MB

Memory

Intel Celeron G3900 addresses 64 GB across 2 memory channels.

Intel Celeron G3900 specifications: Memory
Supported types	DDR4
Max capacity	64 GB
Channels	2

Package and power

Intel Celeron G3900 uses the FCLGA1151 socket and a 51 W TDP.

Intel Celeron G3900 specifications: Package and power
Socket	FCLGA1151
TDP	51 W
PCIe	Revision 3.0, 16 lanes

Integrated graphics

Intel Celeron G3900 includes Intel HD Graphics 510.

Intel Celeron G3900 specifications: Integrated graphics
Integrated graphics	Intel HD Graphics 510

Market

Intel Celeron G3900 launched October 1, 2015.

Intel Celeron G3900 specifications: Market
Launch date	October 1, 2015
Model	G3900

Features

Intel Celeron G3900 records 3 instruction sets on this sheet.

Intel Celeron G3900 specifications: Features
Instruction sets	64-bit (x86-64)SSE4.1SSE4.2
Security	Boot GuardHardware RNG
Virtualization	Extended Page Tables (EPT)VT-d (DMA Remapping)VT-x (Hardware Virtualization)

Compatibility

Compatibility
Socket	FCLGA1151
Board	A shared socket is not automatic compatibility. Check the motherboard CPU list and BIOS revision.
Memory	DDR4, up to 64 GB
Graphics	Intel HD Graphics 510

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

Cooler clearance, VRM quality, and power limits matter as much as the socket 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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