Celeron 3955U vs Celeron 5205U

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 3955U vs Celeron 5205U 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 3955U vs Celeron 5205U: Pros, Cons & Final Verdict

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

Celeron 3955U

2015

Why buy it

✅+11.9% higher Geekbench single-core performance for gaming and desktop responsiveness.

Trade-offs

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

Celeron 5205U

2019

Why buy it

Trade-offs

❌Lower Geekbench single-core performance for gaming (385 vs 431).
❌Lower Geekbench multi-core (650 vs 741).

Quick Answers

So, is Celeron 3955U better than Celeron 5205U?

Yes. Celeron 3955U is the better all-around CPU here. It gives you a 0.1% average FPS lead across 50 shared CPU game tests in our data, 14% better Geekbench multi-core, and 0.8% higher PassMark, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Celeron 3955U is the better pick. According to our tests, it delivers 0.1% 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, Celeron 3955U is the stronger fit. You are getting 14% better Geekbench multi-core, backed by 2 cores and 2 threads.

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

Celeron 3955U still makes the most sense overall. Celeron 3955U comes in at an unclear MSRP at unclear MSRP versus unclear MSRP, and it still gives you a 0.1% average FPS lead across 50 shared CPU game tests in our data.

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

Celeron 5205U makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2019 vs 2015). That makes it the safer long-term bet.

Celeron 3955U vs Celeron 5205U Technical Specifications

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

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.

Celeron 5205U

The Celeron 5205U is manufactured by Intel. It was released in 31 October 2019 (6 years ago). It is based on the Comet Lake-U (2019−2020) architecture. It features 2 cores and 2 threads. Base frequency is 1.9 GHz, with boost up to 1.9 GHz. L3 cache: 2 MB. L2 cache: 1 MB. Built on 14 nm process technology. Socket: FCBGA1528. Thermal design power (TDP): 15 Watt. Memory support: DDR3, DDR4. Passmark benchmark score: 1,432 points. Launch price was $107.

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Processing Power

Both the Celeron 3955U and Celeron 5205U share an identical 2-core/2-thread configuration. Boost clocks reach 2 GHz on the Celeron 3955U versus 1.9 GHz on the Celeron 5205U — a 5.1% clock advantage for the Celeron 3955U (base: 2 GHz vs 1.9 GHz). The Celeron 3955U uses the Skylake (2015−2016) architecture (14 nm), while the Celeron 5205U uses Comet Lake-U (2019−2020) (14 nm). In PassMark, the Celeron 3955U scores 1,443 against the Celeron 5205U's 1,432 — a 0.8% lead for the Celeron 3955U. Geekbench 6 single-core — the metric most relevant to gaming — records 431 vs 385, a 11.3% lead for the Celeron 3955U that directly translates to higher frame rates. Multi-core Geekbench: 741 vs 650 (13.1% advantage for the Celeron 3955U). Both processors carry 2 MB of L3 cache.

Feature	Celeron 3955U	Celeron 5205U
Cores / Threads	2 / 2	2 / 2
Boost Clock	2 GHz+5%	1.9 GHz
Base Clock	2 GHz+5%	1.9 GHz
L3 Cache	2 MB	2 MB
L2 Cache	512 kB	1 MB+100%
Process	14 nm	14 nm
Architecture	Skylake (2015−2016)	Comet Lake-U (2019−2020)
PassMark	1,443	1,432
Geekbench 6 Single	431+12%	385
Geekbench 6 Multi	741+14%	650

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Memory & Platform

The Celeron 3955U uses the BGA1356 socket (PCIe 3.0), while the Celeron 5205U uses FCBGA1528 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-2133 on the Celeron 3955U versus DDR4-2400 on the Celeron 5205U — the Celeron 5205U supports 12.5% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Celeron 5205U supports up to 64 GB of RAM compared to 32 GB — 100% more capacity for professional workloads. Both feature 2-channel memory with ECC support. Both provide 12 PCIe lanes. Chipset compatibility: Sunrise Point-LP (Celeron 3955U) and Comet Lake-U (Celeron 5205U).

Feature	Celeron 3955U	Celeron 5205U
Socket	BGA1356	FCBGA1528
PCIe Generation	PCIe 3.0	PCIe 3.0
Max RAM Speed	DDR4-2133	DDR4-2400+13%
Max RAM Capacity	32 GB	64 GB+100%
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 510 (Celeron 3955U) and UHD Graphics (Comet Lake) (Celeron 5205U) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Celeron 3955U targets Budget, Celeron 5205U targets Budget. Direct competitor: Celeron 3955U rivals Pentium 3825U; Celeron 5205U rivals Pentium Gold 6405U.