Celeron 3965Y vs Pentium 3805U

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 3965Y vs Pentium 3805U 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 3965Y vs Pentium 3805U: Pros, Cons & Final Verdict

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

Celeron 3965Y

2017

Why buy it

✅+0.4% higher PassMark.
✅Draws 6W instead of 512W, a 506W reduction.

Trade-offs

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

Pentium 3805U

2015

Why buy it

Trade-offs

❌Lower PassMark (1,196 vs 1,201).
❌8433.3% higher power demand at 512W vs 6W.

Quick Answers

So, is Celeron 3965Y better than Pentium 3805U?

It depends on what you want from the system. For gaming, Pentium 3805U is ahead with a 0.4% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Celeron 3965Y 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 3965Y 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 3965Y still makes the most sense overall. Celeron 3965Y 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 3965Y makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2017 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 3965Y vs Pentium 3805U Technical Specifications

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

Celeron 3965Y

The Celeron 3965Y is manufactured by Intel. It was released in 2007-01-01. It is based on the Kaby Lake (2016−2019) architecture. It features 2 cores and 2 threads. Base frequency is 1.5 GHz, with boost up to 1.3 GHz. L3 cache: 2 MB. L2 cache: 512 kB. Built on 14 nm process technology. Socket: FCBGA1515. Thermal design power (TDP): 6 Watt. Memory support: DDR3. Passmark benchmark score: 1,201 points. Launch price was $69.

Pentium 3805U

The Pentium 3805U is manufactured by Intel. It was released in 1 March 2015 (10 years ago). It is based on the Broadwell-U (2015) 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 (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: FCBGA1168. Thermal design power (TDP): 15 Watt. Memory support: DDR3. Passmark benchmark score: 1,196 points. Launch price was $161.

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Processing Power

Both the Celeron 3965Y and Pentium 3805U share an identical 2-core/2-thread configuration. Boost clocks reach 1.3 GHz on the Celeron 3965Y versus 1.9 GHz on the Pentium 3805U — a 37.5% clock advantage for the Pentium 3805U (base: 1.5 GHz vs 1.9 GHz). The Celeron 3965Y uses the Kaby Lake (2016−2019) architecture (14 nm), while the Pentium 3805U uses Broadwell-U (2015) (14 nm). In PassMark, the Celeron 3965Y scores 1,201 against the Pentium 3805U's 1,196 — a 0.4% lead for the Celeron 3965Y. L3 cache: 2 MB on the Celeron 3965Y vs 2 MB (total) on the Pentium 3805U.

Feature	Celeron 3965Y	Pentium 3805U
Cores / Threads	2 / 2	2 / 2
Boost Clock	1.3 GHz	1.9 GHz+46%
Base Clock	1.5 GHz	1.9 GHz+27%
L3 Cache	2 MB	2 MB (total)
L2 Cache	512 kB+100%	256K (per core)
Process	14 nm	14 nm
Architecture	Kaby Lake (2016−2019)	Broadwell-U (2015)
PassMark	1,201	1,196
Geekbench 6 Single	372	—
Geekbench 6 Multi	708	—

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Memory & Platform

The Celeron 3965Y uses the FCBGA1515 socket (PCIe 3.0), while the Pentium 3805U uses FCBGA1168 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches LPDDR3-1866 on the Celeron 3965Y versus DDR3L-1600 on the Pentium 3805U — the Celeron 3965Y supports 16.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. Both support up to 16 GB of RAM. Both feature 2-channel memory with ECC support. PCIe lanes: 10 (Celeron 3965Y) vs 12 (Pentium 3805U) — the Pentium 3805U offers 2 more lanes for additional GPUs or NVMe drives.

Feature	Celeron 3965Y	Pentium 3805U
Socket	FCBGA1515	FCBGA1168
PCIe Generation	PCIe 3.0	PCIe 3.0
Max RAM Speed	LPDDR3-1866+17%	DDR3L-1600
Max RAM Capacity	16 GB	16 GB
RAM Channels	2	2
ECC Support	No	No
PCIe Lanes	10	12+20%

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Advanced Features

Neither processor supports overclocking. Both support VT-x, VT-d virtualization. Both include integrated graphics — Intel HD Graphics 615 (Celeron 3965Y) and HD Graphics (Broadwell) (Pentium 3805U) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Celeron 3965Y targets Low Power, Pentium 3805U targets Mobile. Direct competitor: Celeron 3965Y rivals Pentium Gold 4415Y.

Feature	Celeron 3965Y	Pentium 3805U
Integrated GPU	Yes	Yes
IGPU Model	Intel HD Graphics 615	HD Graphics (Broadwell)
Unlocked	No	No
AVX-512	No	No
Virtualization	VT-x, VT-d	VT-x, VT-d
Target Use	Low Power	Mobile