Celeron 3867U vs Celeron 3955U

PassMark CPU Mark evaluates processor speed through complex mathematical computations. It provides a reliable metric to compare multi-core performance, where higher scores indicate faster processing for multitasking, gaming, and heavy workloads.

Celeron 3867U vs Celeron 3955U FPS Benchmarks

Predicted gaming performance across popular games. Tested paired with GeForce RTX 5090 to isolate CPU performance.

Search any supported game below to compare 1080p FPS for both components.

Celeron 3867U vs Celeron 3955U: Pros, Cons & Final Verdict

See where each CPU makes more sense in practice: gaming, heavier work, platform cost, power draw, and upgrade path.

Celeron 3867U

2019

Why buy it

✅+0.4% higher PassMark.

Trade-offs

❌3313.3% higher power demand at 512W vs 15W.

Celeron 3955U

2015

Why buy it

✅Draws 15W instead of 512W, a 497W reduction.

Trade-offs

❌Lower PassMark (1,443 vs 1,449).

Quick Answers

So, is Celeron 3867U better than Celeron 3955U?

It depends on what you want from the system. For gaming, Celeron 3955U is ahead with a 0.2% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Celeron 3867U pulls ahead with 0.4% better PassMark.

Which one is better for streaming, content creation, and heavy multitasking?

For streaming, content creation, and heavier multitasking, Celeron 3867U is the stronger fit. You are getting 0.4% better PassMark, backed by 2 cores and 2 threads.

Which one is the smarter buy today, not just the cheaper CPU?

Celeron 3867U still makes the most sense overall. Celeron 3867U comes in at an unclear MSRP at unclear MSRP versus unclear MSRP, and it still gives you 0.4% better PassMark.

Which one is more future-proof for 2026 and beyond?

Celeron 3867U makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2019 vs 2015) and more multi-core headroom with 2 cores / 2 threads instead of 2/2. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Celeron 3867U vs Celeron 3955U Technical Specifications

Side-by-side specs, architecture details, clocks, memory, power, and platform differences.

Celeron 3867U

The Celeron 3867U is manufactured by Intel. It was released in 1 March 2019 (6 years ago). It is based on the Kaby Lake (2016−2019) architecture. It features 2 cores and 2 threads. Base frequency is 1.8 GHz, with boost up to 1.8 GHz. L3 cache: 2 MB. L2 cache: 512 kB. Built on 14 nm process technology. Socket: BGA1356. Thermal design power (TDP): 15 Watt. Memory support: DDR3, DDR4. Passmark benchmark score: 1,449 points. Launch price was $107.

Celeron 3955U

The Celeron 3955U is manufactured by Intel. It was released in 15 August 2015 (10 years ago). It is based on the Skylake (2015−2016) architecture. It features 2 cores and 2 threads. Base frequency is 2 GHz, with boost up to 2 GHz. L3 cache: 2 MB. L2 cache: 512 kB. Built on 14 nm process technology. Socket: BGA1356. Thermal design power (TDP): 15 Watt. Memory support: DDR4-1866/2133, LPDDR3-1600/1866, DDR3L-1333/1600. Passmark benchmark score: 1,443 points. Launch price was $107.

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Processing Power

Both the Celeron 3867U and Celeron 3955U share an identical 2-core/2-thread configuration. Boost clocks reach 1.8 GHz on the Celeron 3867U versus 2 GHz on the Celeron 3955U — a 10.5% clock advantage for the Celeron 3955U (base: 1.8 GHz vs 2 GHz). The Celeron 3867U uses the Kaby Lake (2016−2019) architecture (14 nm), while the Celeron 3955U uses Skylake (2015−2016) (14 nm). In PassMark, the Celeron 3867U scores 1,449 against the Celeron 3955U's 1,443 — a 0.4% lead for the Celeron 3867U. Both processors carry 2 MB of L3 cache.

Feature	Celeron 3867U	Celeron 3955U
Cores / Threads	2 / 2	2 / 2
Boost Clock	1.8 GHz	2 GHz+11%
Base Clock	1.8 GHz	2 GHz+11%
L3 Cache	2 MB	2 MB
L2 Cache	512 kB	512 kB
Process	14 nm	14 nm
Architecture	Kaby Lake (2016−2019)	Skylake (2015−2016)
PassMark	1,449	1,443
Geekbench 6 Single	—	431
Geekbench 6 Multi	—	741

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Memory & Platform

Both processors use the BGA1356 socket with PCIe 3.0. Both support up to DDR4-2133 memory speed. Both support up to 32 GB of RAM. Both feature 2-channel memory with ECC support. Both provide 12 PCIe lanes. Chipset compatibility: Kaby Lake-U (Celeron 3867U) and Sunrise Point-LP (Celeron 3955U).

Feature	Celeron 3867U	Celeron 3955U
Socket	BGA1356	BGA1356
PCIe Generation	PCIe 3.0	PCIe 3.0
Max RAM Speed	DDR4-2133	DDR4-2133
Max RAM Capacity	32 GB	32 GB
RAM Channels	2	2
ECC Support	No	No
PCIe Lanes	12	12

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Advanced Features

Neither processor supports overclocking. Both support VT-x, VT-d virtualization. Both include integrated graphics — HD Graphics 610 (Celeron 3867U) and HD Graphics 510 (Celeron 3955U) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Celeron 3867U targets Budget, Celeron 3955U targets Budget. Direct competitor: Celeron 3867U rivals Pentium Gold 4417U; Celeron 3955U rivals Pentium 3825U.