Celeron 3755U vs Pentium T4400

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 3755U vs Pentium T4400 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 3755U vs Pentium T4400: Pros, Cons & Final Verdict

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

Celeron 3755U

2015

Why buy it

✅+100% larger total L3 cache (2 MB vs 1 MB).
✅Draws 15W instead of 35W, a 20W reduction.
✅100+% more PCIe lanes (12 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with HD Graphics (Broadwell), while Pentium T4400 needs a discrete GPU.

Trade-offs

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

Pentium T4400

2009

Why buy it

Trade-offs

❌Lower PassMark (1,175 vs 1,182).
❌Smaller total L3 cache (1 MB vs 2 MB).
❌Launch MSRP is still $107 MSRP, while Celeron 3755U mostly shows up through inconsistent older-market listings.
❌133.3% higher power demand at 35W vs 15W.
❌No integrated graphics, while Celeron 3755U can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Celeron 3755U better than Pentium T4400?

Yes. Celeron 3755U is the better all-around CPU here. It gives you a 1.3% average FPS lead across 50 shared CPU game tests in our data, 0.6% better PassMark, and the stronger long-term platform, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Celeron 3755U is the better pick. According to our tests, it delivers 1.3% 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 3755U is the stronger fit. You are getting 0.6% better PassMark, backed by 2 cores and 2 threads. It also has the larger cache pool with 100% larger total L3 cache (2 MB vs 1 MB).

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

Celeron 3755U is still the much better call for a fresh build. Celeron 3755U comes in at an unclear MSRP at unclear MSRP versus $107 MSRP, and it still gives you a 1.3% average FPS lead across 50 shared CPU game tests in our data. Pentium T4400 only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2009 platform. Even with 100.0% better value on paper (11.0 vs 0.0 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on PGA478.

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

Celeron 3755U makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2015 vs 2009) and 100% larger total L3 cache (2 MB vs 1 MB). That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Celeron 3755U vs Pentium T4400 Technical Specifications

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

Celeron 3755U

The Celeron 3755U 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 1.7 GHz, with boost up to 1.7 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: 1,182 points. Launch price was $107.

Pentium T4400

The Pentium T4400 is manufactured by Intel. It was released in 2007-01-01. Base frequency: 2.2 GHz. L3 cache: 1 MB L2 Cache. Built on 45 nm process technology. Socket: PGA478. Thermal design power (TDP): 35 Watt. Passmark benchmark score: 1,175 points. Launch price was $69.

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Processing Power

The Celeron 3755U is built on the Broadwell-U (2015) architecture. In PassMark, the Celeron 3755U scores 1,182 against the Pentium T4400's 1,175 — a 0.6% lead for the Celeron 3755U. L3 cache: 2 MB (total) on the Celeron 3755U vs 1 MB L2 Cache on the Pentium T4400.

Feature	Celeron 3755U	Pentium T4400
Cores / Threads	2 / 2	—
Boost Clock	1.7 GHz	—
Base Clock	1.7 GHz	2.2 GHz+29%
L3 Cache	2 MB (total)+100%	1 MB L2 Cache
L2 Cache	256K (per core)	—
Process	14 nm-69%	45 nm
Architecture	Broadwell-U (2015)	—
PassMark	1,182	1,175
Geekbench 6 Single	—	249
Geekbench 6 Multi	625	—

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Memory & Platform

The Celeron 3755U uses the FCBGA1168 socket (PCIe 3.0), while the Pentium T4400 uses PGA478 (PCIe 2.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3L-1600 on the Celeron 3755U versus DDR3-800 on the Pentium T4400 — the Celeron 3755U supports 100% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Celeron 3755U supports up to 16 GB of RAM compared to 8 GB — 100% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 12 (Celeron 3755U) vs 0 (Pentium T4400) — the Celeron 3755U offers 12 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Wildcat Point-LP (Celeron 3755U) and GL40,GM45 (Pentium T4400).

Feature	Celeron 3755U	Pentium T4400
Socket	FCBGA1168	PGA478
PCIe Generation	PCIe 3.0+50%	PCIe 2.0
Max RAM Speed	DDR3L-1600+100%	DDR3-800
Max RAM Capacity	16 GB+100%	8 GB
RAM Channels	2	2
ECC Support	No	No
PCIe Lanes	12	0

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Advanced Features

Neither processor supports overclocking. Virtualization support: VT-x, VT-d (Celeron 3755U) vs None (Pentium T4400). The Celeron 3755U includes integrated graphics (HD Graphics (Broadwell)), while the Pentium T4400 requires a dedicated GPU. Primary use case: Celeron 3755U targets Budget, Pentium T4400 targets Budget. Direct competitor: Celeron 3755U rivals Pentium 3825U; Pentium T4400 rivals AMD A4-3300M.