Core i5-10400F vs Core Ultra 5 135U

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.

Core i5-10400F vs Core Ultra 5 135U 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.

Core i5-10400F vs Core Ultra 5 135U: Pros, Cons & Final Verdict

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

Core i5-10400F

2020

Why buy it

✅Includes a boxed cooler (Yes), unlike Core Ultra 5 135U.

Trade-offs

❌Worse for gaming: lower average FPS than Core Ultra 5 135U across 50 shared CPU benchmark tests.
❌Lower Cinebench R23 multi-core (8,191 vs 9,315).
❌Launch MSRP is still $160 MSRP, while Core Ultra 5 135U mostly shows up through inconsistent older-market listings.
❌Older platform position on LGA1200 with DDR4, while Core Ultra 5 135U moves to FCBGA2049 and DDR5.
❌No integrated graphics, while Core Ultra 5 135U can still boot and troubleshoot without a discrete GPU.

Core Ultra 5 135U

2023

Why buy it

✅Better for gaming: +9.9% higher average FPS across 50 shared CPU benchmark tests.
✅Newer platform on FCBGA2049 with DDR5 support instead of LGA1200 and DDR4.
✅25% more PCIe lanes (20 vs 16) for storage and expansion-heavy builds.
✅Integrated graphics onboard with Intel Arc Graphics, while Core i5-10400F needs a discrete GPU.

Trade-offs

❌No boxed cooler included, unlike Core i5-10400F.

Quick Answers

So, is Core Ultra 5 135U better than Core i5-10400F?

Yes. Core Ultra 5 135U is the better all-around CPU here. It gives you a 9.9% average FPS lead across 50 shared CPU game tests in our data, 13.7% better Cinebench R23 multi-core, 29.7% higher 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 Ultra 5 135U is the better pick. According to our tests, it delivers 9.9% 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 Ultra 5 135U is the stronger fit. You are getting 13.7% better Cinebench R23 multi-core, backed by 12 cores and 14 threads.

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

Core Ultra 5 135U is still the faster CPU overall, but Core i5-10400F is easier to justify if budget matters more than peak performance. Core Ultra 5 135U comes in at an unclear MSRP at unclear MSRP versus $160 MSRP, and it still gives you a 9.9% average FPS lead across 50 shared CPU game tests in our data. Core i5-10400F is also 100.0% better value on MSRP (81.4 vs 0.0 PassMark/$), which is why it can still make sense for tighter-budget builds on paper.

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

Core Ultra 5 135U makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2023 vs 2020), a healthier platform with FCBGA2049 and DDR5 instead of LGA1200, and more multi-core headroom with 12 cores / 14 threads instead of 6/12. That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

Core i5-10400F vs Core Ultra 5 135U Technical Specifications

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

Core i5-10400F

The Core i5-10400F is manufactured by Intel. It was released in 30 April 2020 (5 years ago). It is based on the Comet Lake (2020−2025) architecture. It features 6 cores and 12 threads. Base frequency is 2.9 GHz, with boost up to 4.3 GHz. L3 cache: 12 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA1200. Thermal design power (TDP): 65 Watt. Memory support: DDR4. Passmark benchmark score: 13,029 points. Launch price was $155.

Core Ultra 5 135U

The Core Ultra 5 135U is manufactured by Intel. It was released in 14 December 2023 (1 year ago). It is based on the Meteor Lake-P (2023) architecture. It features 12 cores and 14 threads. Base frequency is 1.6 GHz, with boost up to 4.4 GHz. L3 cache: 12 MB (total). L2 cache: 2 MB (per core). Built on 7 nm process technology. Socket: FCBGA2049. Thermal design power (TDP): + 12 MB. Memory support: DDR5. Passmark benchmark score: 16,900 points. Launch price was $332.

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Processing Power

The Core i5-10400F packs 6 cores / 12 threads, while the Core Ultra 5 135U offers 12 cores / 14 threads — the Core Ultra 5 135U has 6 more cores. Boost clocks reach 4.3 GHz on the Core i5-10400F versus 4.4 GHz on the Core Ultra 5 135U — a 2.3% clock advantage for the Core Ultra 5 135U (base: 2.9 GHz vs 1.6 GHz). The Core i5-10400F uses the Comet Lake (2020−2025) architecture (14 nm), while the Core Ultra 5 135U uses Meteor Lake-P (2023) (7 nm). In PassMark, the Core i5-10400F scores 13,029 against the Core Ultra 5 135U's 16,900 — a 25.9% lead for the Core Ultra 5 135U. Cinebench R23 multi-core: 8,191 vs 9,315 (12.8% advantage for the Core Ultra 5 135U). Geekbench 6 single-core — the metric most relevant to gaming — records 1,454 vs 1,948, a 29% lead for the Core Ultra 5 135U that directly translates to higher frame rates. Multi-core Geekbench: 5,783 vs 8,000 (32.2% advantage for the Core Ultra 5 135U). Both processors carry 12 MB (total) of L3 cache.

Feature	Core i5-10400F	Core Ultra 5 135U
Cores / Threads	6 / 12	12 / 14+100%
Boost Clock	4.3 GHz	4.4 GHz+2%
Base Clock	2.9 GHz+81%	1.6 GHz
L3 Cache	12 MB (total)	12 MB (total)
L2 Cache	256K (per core)+12700%	2 MB (per core)
Process	14 nm	7 nm-50%
Architecture	Comet Lake (2020−2025)	Meteor Lake-P (2023)
PassMark	13,029	16,900+30%
Cinebench R23 Multi	8,191	9,315+14%
Geekbench 6 Single	1,454	1,948+34%
Geekbench 6 Multi	5,783	8,000+38%

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Memory & Platform

The Core i5-10400F uses the LGA1200 socket (PCIe 3.0), while the Core Ultra 5 135U uses FCBGA2049 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-2666 on the Core i5-10400F versus DDR5-5600 on the Core Ultra 5 135U — the Core Ultra 5 135U supports 110.1% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core i5-10400F supports up to 128 GB of RAM compared to 96 GB — 33.3% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 16 (Core i5-10400F) vs 20 (Core Ultra 5 135U) — the Core Ultra 5 135U offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: H410,B460,H470,Z490,H510,B560,H570,Z590 (Core i5-10400F) and SoC (Core Ultra 5 135U).

Feature	Core i5-10400F	Core Ultra 5 135U
Socket	LGA1200	FCBGA2049
PCIe Generation	PCIe 3.0	PCIe 5.0+67%
Max RAM Speed	DDR4-2666	DDR5-5600+110%
Max RAM Capacity	128 GB+33%	96 GB
RAM Channels	2	2
ECC Support	No	No
PCIe Lanes	16	20+25%

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Advanced Features

Virtualization support: VT-x, VT-d (Core i5-10400F) vs Yes (Core Ultra 5 135U). The Core Ultra 5 135U includes integrated graphics (Intel Arc Graphics), while the Core i5-10400F requires a dedicated GPU. Primary use case: Core i5-10400F targets Gaming. Direct competitor: Core i5-10400F rivals Ryzen 5 3600.