Celeron 3865U vs Pentium Dual Core T4500

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 3865U vs Pentium Dual Core T4500 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 3865U vs Pentium Dual Core T4500: Pros, Cons & Final Verdict

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

Celeron 3865U

2017

Why buy it

✅+0.5% higher PassMark.
✅Draws 15W instead of 35W, a 20W reduction.
✅100+% more PCIe lanes (10 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with Intel HD Graphics 610, while Pentium Dual Core T4500 needs a discrete GPU.

Trade-offs

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

Pentium Dual Core T4500

2010

Why buy it

Trade-offs

❌Lower PassMark (1,336 vs 1,343).
❌Launch MSRP is still $150 MSRP, while Celeron 3865U mostly shows up through inconsistent older-market listings.
❌133.3% higher power demand at 35W vs 15W.
❌No integrated graphics, while Celeron 3865U can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Celeron 3865U better than Pentium Dual Core T4500?

It depends on what you want from the system. For gaming, Pentium Dual Core T4500 is ahead with a 1.1% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Celeron 3865U pulls ahead with 0.5% better PassMark.

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

For streaming, content creation, and heavier multitasking, Celeron 3865U is the stronger fit. You are getting 0.5% better PassMark, backed by 2 cores and 2 threads.

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

Celeron 3865U is still the much better call for a fresh build. Celeron 3865U comes in at an unclear MSRP at unclear MSRP versus $150 MSRP, and it still gives you 0.5% better PassMark. Pentium Dual Core T4500 only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2010 platform. Even with 100.0% better value on paper (8.9 vs 0.0 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on P.

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

Celeron 3865U makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2017 vs 2010) 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 3865U vs Pentium Dual Core T4500 Technical Specifications

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

Celeron 3865U

The Celeron 3865U is manufactured by Intel. It was released in 3 January 2017 (8 years ago). It is based on the Kaby Lake-U (2017) 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 (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: BGA1356. Thermal design power (TDP): 15 Watt. Memory support: DDR3, DDR4. Passmark benchmark score: 1,343 points. Launch price was $107.

Pentium Dual Core T4500

The Pentium Dual Core T4500 is manufactured by Intel. It was released in 2007-01-01. It is based on the NetBurst (2000−2006) architecture. It features 2 cores and 2 threads. Base frequency is 2.3 GHz, with boost up to 2.3 GHz. L3 cache: 0 kB. L2 cache: 1 MB. Built on 45 nm process technology. Socket: P. Thermal design power (TDP): 35 Watt. Memory support: DDR3. Passmark benchmark score: 1,336 points. Launch price was $69.

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Processing Power

Both the Celeron 3865U and Pentium Dual Core T4500 share an identical 2-core/2-thread configuration. Boost clocks reach 1.8 GHz on the Celeron 3865U versus 2.3 GHz on the Pentium Dual Core T4500 — a 24.4% clock advantage for the Pentium Dual Core T4500 (base: 1.8 GHz vs 2.3 GHz). The Celeron 3865U uses the Kaby Lake-U (2017) architecture (14 nm), while the Pentium Dual Core T4500 uses NetBurst (2000−2006) (45 nm). In PassMark, the Celeron 3865U scores 1,343 against the Pentium Dual Core T4500's 1,336 — a 0.5% lead for the Celeron 3865U. L3 cache: 2 MB (total) on the Celeron 3865U vs 0 kB on the Pentium Dual Core T4500.

Feature	Celeron 3865U	Pentium Dual Core T4500
Cores / Threads	2 / 2	2 / 2
Boost Clock	1.8 GHz	2.3 GHz+28%
Base Clock	1.8 GHz	2.3 GHz+28%
L3 Cache	2 MB (total)	0 kB
L2 Cache	256K (per core)+25500%	1 MB
Process	14 nm-69%	45 nm
Architecture	Kaby Lake-U (2017)	NetBurst (2000−2006)
PassMark	1,343	1,336
Geekbench 6 Single	389	—
Geekbench 6 Multi	674	—

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Memory & Platform

The Celeron 3865U uses the BGA1356 socket (PCIe 3.0), while the Pentium Dual Core T4500 uses P (PCIe 1.1) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-2133 / LPDDR3-1866 on the Celeron 3865U versus DDR3-800 on the Pentium Dual Core T4500 — the Celeron 3865U supports 166.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Celeron 3865U supports up to 32 GB of RAM compared to 8 GB — 300% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 10 (Celeron 3865U) vs 0 (Pentium Dual Core T4500) — the Celeron 3865U offers 10 more lanes for additional GPUs or NVMe drives.

Feature	Celeron 3865U	Pentium Dual Core T4500
Socket	BGA1356	P
PCIe Generation	PCIe 3.0+173%	PCIe 1.1
Max RAM Speed	DDR4-2133 / LPDDR3-1866+167%	DDR3-800
Max RAM Capacity	32 GB+300%	8 GB
RAM Channels	2	2
ECC Support	No	No
PCIe Lanes	10	0

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Advanced Features

Neither processor supports overclocking. Virtualization support: VT-x / VT-d / EPT (Celeron 3865U) vs No VT-x (Pentium Dual Core T4500). The Celeron 3865U includes integrated graphics (Intel HD Graphics 610), while the Pentium Dual Core T4500 requires a dedicated GPU. Primary use case: Celeron 3865U targets Entry-level, Pentium Dual Core T4500 targets Mobile. Direct competitor: Celeron 3865U rivals Pentium Gold 4415U.