Celeron M U3400 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 M U3400 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 M U3400 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 M U3400

2010

Why buy it

✅+0.8% higher PassMark.

Trade-offs

❌Launch MSRP is still $86 MSRP, while Pentium 3805U mostly shows up through inconsistent older-market listings.
❌No integrated graphics, while Pentium 3805U can still boot and troubleshoot without a discrete GPU.

Pentium 3805U

2015

Why buy it

✅100+% more PCIe lanes (12 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with HD Graphics (Broadwell), while Celeron M U3400 needs a discrete GPU.

Trade-offs

❌Lower PassMark (1,196 vs 1,205).

Quick Answers

So, is Celeron M U3400 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 M U3400 pulls ahead with 0.8% better PassMark.

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

For streaming, content creation, and heavier multitasking, Celeron M U3400 is the stronger fit. You are getting 0.8% better PassMark, backed by 2 cores and 2 threads.

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

Celeron M U3400 is the better buy right now. Celeron M U3400 comes in at an unclear MSRP at $86 MSRP versus unclear MSRP, and it still gives you 0.8% better PassMark. The compromise is that Pentium 3805U is still the better pure gaming CPU with a 0.4% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (14.0 vs 0.0 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Pentium 3805U makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2015 vs 2010). That makes it the safer long-term bet.

Celeron M U3400 vs Pentium 3805U Technical Specifications

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

Celeron M U3400

The Celeron M U3400 is manufactured by Intel. It was released in 2007-01-01. It is based on the Arrandale (2010−2011) architecture. It features 2 cores and 2 threads. Max frequency: 1.06 GHz. L3 cache: 2 MB. L2 cache: 512 kB. Built on 32 nm process technology. Socket: BGA1288. Thermal design power (TDP): 512 kB + 2 MB. Memory support: DDR3. Passmark benchmark score: 1,205 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 M U3400 and Pentium 3805U share an identical 2-core/2-thread configuration. Boost clocks reach 1.06 GHz on the Celeron M U3400 versus 1.9 GHz on the Pentium 3805U — a 56.8% clock advantage for the Pentium 3805U. The Celeron M U3400 uses the Arrandale (2010−2011) architecture (32 nm), while the Pentium 3805U uses Broadwell-U (2015) (14 nm). In PassMark, the Celeron M U3400 scores 1,205 against the Pentium 3805U's 1,196 — a 0.7% lead for the Celeron M U3400. L3 cache: 2 MB on the Celeron M U3400 vs 2 MB (total) on the Pentium 3805U.

Feature	Celeron M U3400	Pentium 3805U
Cores / Threads	2 / 2	2 / 2
Boost Clock	1.06 GHz	1.9 GHz+79%
Base Clock	—	1.9 GHz
L3 Cache	2 MB	2 MB (total)
L2 Cache	512 kB+100%	256K (per core)
Process	32 nm	14 nm-56%
Architecture	Arrandale (2010−2011)	Broadwell-U (2015)
PassMark	1,205	1,196

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Memory & Platform

The Celeron M U3400 uses the BGA1288 socket (PCIe 2.0), while the Pentium 3805U uses FCBGA1168 (PCIe 3.0) — making them incompatible on the same motherboard.

Feature	Celeron M U3400	Pentium 3805U
Socket	BGA1288	FCBGA1168
PCIe Generation	PCIe 2.0	PCIe 3.0+50%
Max RAM Speed	—	DDR3L-1600
Max RAM Capacity	—	16 GB
RAM Channels	—	2
ECC Support	—	No
PCIe Lanes	—	12

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Advanced Features

Virtualization: not specified (Celeron M U3400) / VT-x, VT-d (Pentium 3805U). The Pentium 3805U includes integrated graphics (HD Graphics (Broadwell)), while the Celeron M U3400 requires a dedicated GPU. Primary use case: Pentium 3805U targets Mobile.