Celeron 3865U vs Core i3-L13G4

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 Core i3-L13G4 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 Core i3-L13G4: 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

Trade-offs

❌Lower PassMark (1,343 vs 1,349).
❌Smaller total L3 cache (2 MB vs 4 MB).
❌114.3% higher power demand at 15W vs 7W.

Core i3-L13G4

2020

Why buy it

✅+100% larger total L3 cache (4 MB vs 2 MB).
✅Draws 7W instead of 15W, a 8W reduction.

Trade-offs

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

Quick Answers

So, is Core i3-L13G4 better than Celeron 3865U?

Yes. Core i3-L13G4 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, 0.4% 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, Core i3-L13G4 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, Core i3-L13G4 is the stronger fit. You are getting 0.4% better PassMark, backed by 5 cores and 5 threads. It also has the larger cache pool with 100% larger total L3 cache (4 MB vs 2 MB).

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

Core i3-L13G4 still makes the most sense overall. Core i3-L13G4 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?

Core i3-L13G4 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2020 vs 2017), 100% larger total L3 cache (4 MB vs 2 MB), and more multi-core headroom with 5 cores / 5 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 Core i3-L13G4 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.

Core i3-L13G4

The Core i3-L13G4 is manufactured by Intel. It was released in Junho 2020 (5 years ago). It is based on the Lakefield (2020) architecture. It features 5 cores and 5 threads. Base frequency is 0.8 GHz, with boost up to 2.8 GHz. L3 cache: 4 MB (total). L2 cache: 512 kB. Built on 10 nm process technology. Socket: FC-CSP1016. Thermal design power (TDP): 7 Watt. Memory support: DDR4. Passmark benchmark score: 1,349 points. Launch price was $281.

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Processing Power

The Celeron 3865U packs 2 cores / 2 threads, while the Core i3-L13G4 offers 5 cores / 5 threads — the Core i3-L13G4 has 3 more cores. Boost clocks reach 1.8 GHz on the Celeron 3865U versus 2.8 GHz on the Core i3-L13G4 — a 43.5% clock advantage for the Core i3-L13G4 (base: 1.8 GHz vs 0.8 GHz). The Celeron 3865U uses the Kaby Lake-U (2017) architecture (14 nm), while the Core i3-L13G4 uses Lakefield (2020) (10 nm). In PassMark, the Celeron 3865U scores 1,343 against the Core i3-L13G4's 1,349 — a 0.4% lead for the Core i3-L13G4. L3 cache: 2 MB (total) on the Celeron 3865U vs 4 MB (total) on the Core i3-L13G4.

Feature	Celeron 3865U	Core i3-L13G4
Cores / Threads	2 / 2	5 / 5+150%
Boost Clock	1.8 GHz	2.8 GHz+56%
Base Clock	1.8 GHz+125%	0.8 GHz
L3 Cache	2 MB (total)	4 MB (total)+100%
L2 Cache	256K (per core)	512 kB+100%
Process	14 nm	10 nm-29%
Architecture	Kaby Lake-U (2017)	Lakefield (2020)
PassMark	1,343	1,349
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 Core i3-L13G4 uses FC-CSP1016 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-2133 / LPDDR3-1866 on the Celeron 3865U versus LPDDR4x-4267 on the Core i3-L13G4 — the Core i3-L13G4 supports 100% 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. Memory channels: 2 (Celeron 3865U) vs 4 (Core i3-L13G4). PCIe lanes: 10 (Celeron 3865U) vs 8 (Core i3-L13G4) — the Celeron 3865U offers 2 more lanes for additional GPUs or NVMe drives.

Feature	Celeron 3865U	Core i3-L13G4
Socket	BGA1356	FC-CSP1016
PCIe Generation	PCIe 3.0	PCIe 3.0
Max RAM Speed	DDR4-2133 / LPDDR3-1866	LPDDR4x-4267+100%
Max RAM Capacity	32 GB+300%	8 GB
RAM Channels	2	4+100%
ECC Support	No	No
PCIe Lanes	10+25%	8

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Advanced Features

Neither processor supports overclocking. Virtualization support: VT-x / VT-d / EPT (Celeron 3865U) vs VT-x, VT-d (Core i3-L13G4). Both include integrated graphics — Intel HD Graphics 610 (Celeron 3865U) and UHD Graphics (Core i3-L13G4) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Celeron 3865U targets Entry-level, Core i3-L13G4 targets Mobile. Direct competitor: Celeron 3865U rivals Pentium Gold 4415U.

Feature	Celeron 3865U	Core i3-L13G4
Integrated GPU	Yes	Yes
IGPU Model	Intel HD Graphics 610	UHD Graphics
Unlocked	No	No
AVX-512	No	No
Virtualization	VT-x / VT-d / EPT	VT-x, VT-d
Target Use	Entry-level	Mobile