A6-5400B vs Celeron 3867U

A6-5400B vs Celeron 3867U Performance Spectrum

A6-5400B

2 / 2

1,465

+1.1%

Ryzen Threadripper PRO 3955WX

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Celeron 3867U

2 / 2

1,449

0.0%

About PassMark

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.

A6-5400B vs Celeron 3867U 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.

A6-5400B vs Celeron 3867U: Pros, Cons & Final Verdict

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

A6-5400B

2012

Why buy it

✅Better for gaming: +5.5% higher average FPS across 50 shared CPU benchmark tests.
✅Draws 65W instead of 512W, a 447W reduction.
✅33.3% more PCIe lanes (16 vs 12) for storage and expansion-heavy builds.
✅Includes a boxed cooler (Yes), unlike Celeron 3867U.

Trade-offs

❌Fewer obvious downsides in this matchup outside of normal market pricing swings.

Celeron 3867U

2019

Why buy it

Trade-offs

❌Worse for gaming: lower average FPS than A6-5400B across 50 shared CPU benchmark tests.
❌Lower PassMark (1,449 vs 1,465).
❌687.7% higher power demand at 512W vs 65W.
❌No boxed cooler included, unlike A6-5400B.

Quick Answers

So, is A6-5400B better than Celeron 3867U?

Yes. A6-5400B is the better all-around CPU here. It gives you a 5.5% average FPS lead across 50 shared CPU game tests in our data and 1.1% better PassMark, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, A6-5400B is the better pick. According to our tests, it delivers 5.5% more average FPS across 50 shared CPU game tests.

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

For streaming, content creation, and heavier multitasking, A6-5400B is the stronger fit. You are getting 1.1% better PassMark, backed by 2 cores and 2 threads.

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

A6-5400B still makes the most sense overall. A6-5400B comes in at an unclear MSRP at unclear MSRP versus unclear MSRP, and it still gives you a 5.5% average FPS lead across 50 shared CPU game tests in our data.

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 2012). That makes it the safer long-term bet.

A6-5400B vs Celeron 3867U Technical Specifications

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

A6-5400B

The A6-5400B is manufactured by AMD. It was released in 2014-01-01. It is based on the Trinity (2012−2013) architecture. It features 2 cores and 2 threads. Base frequency is 3.6 GHz, with boost up to 3.8 GHz. L3 cache: 0 kB. L2 cache: 1 MB (per core). Built on 32 nm process technology. Socket: FM2. Thermal design power (TDP): 65 Watt. Memory support: DDR3. Passmark benchmark score: 1,465 points. Launch price was $70.

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.

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Processing Power

Both the A6-5400B and Celeron 3867U share an identical 2-core/2-thread configuration. Boost clocks reach 3.8 GHz on the A6-5400B versus 1.8 GHz on the Celeron 3867U — a 71.4% clock advantage for the A6-5400B (base: 3.6 GHz vs 1.8 GHz). The A6-5400B uses the Trinity (2012−2013) architecture (32 nm), while the Celeron 3867U uses Kaby Lake (2016−2019) (14 nm). In PassMark, the A6-5400B scores 1,465 against the Celeron 3867U's 1,449 — a 1.1% lead for the A6-5400B. L3 cache: 0 kB on the A6-5400B vs 2 MB on the Celeron 3867U.

Feature	A6-5400B	Celeron 3867U
Cores / Threads	2 / 2	2 / 2
Boost Clock	3.8 GHz+111%	1.8 GHz
Base Clock	3.6 GHz+100%	1.8 GHz
L3 Cache	0 kB	2 MB
L2 Cache	1 MB (per core)+100%	512 kB
Process	32 nm	14 nm-56%
Architecture	Trinity (2012−2013)	Kaby Lake (2016−2019)
PassMark	1,465+1%	1,449
Geekbench 6 Single	380	—

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Memory & Platform

The A6-5400B uses the FM2 socket (PCIe 2.0), while the Celeron 3867U uses BGA1356 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1866 on the A6-5400B versus DDR4-2133 on the Celeron 3867U — the Celeron 3867U supports 14.3% faster memory, which can translate to measurable gains in memory-sensitive workloads. Both support up to 32 GB of RAM. Both feature 2-channel memory with ECC support. PCIe lanes: 16 (A6-5400B) vs 12 (Celeron 3867U) — the A6-5400B offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: A55,A75,A85X (A6-5400B) and Kaby Lake-U (Celeron 3867U).

Feature	A6-5400B	Celeron 3867U
Socket	FM2	BGA1356
PCIe Generation	PCIe 2.0	PCIe 3.0+50%
Max RAM Speed	DDR3-1866	DDR4-2133+14%
Max RAM Capacity	32 GB	32 GB
RAM Channels	2	2
ECC Support	No	No
PCIe Lanes	16+33%	12

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Advanced Features

Neither processor supports overclocking. Virtualization support: AMD-V (A6-5400B) vs VT-x, VT-d (Celeron 3867U). Both include integrated graphics — Radeon HD 7540D (A6-5400B) and HD Graphics 610 (Celeron 3867U) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: A6-5400B targets Business Desktop, Celeron 3867U targets Budget. Direct competitor: A6-5400B rivals Pentium G2020; Celeron 3867U rivals Pentium Gold 4417U.