Core i5-11400 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 i5-11400 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 i5-11400 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 i5-11400

2021

Why buy it

✅+0.6% higher Geekbench single-core performance for gaming and desktop responsiveness.
✅Includes a boxed cooler (Stock), unlike Core Ultra 5 135U.

Trade-offs

❌Launch MSRP is still $182 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.

Core Ultra 5 135U

2023

Why buy it

✅Newer platform on FCBGA2049 with DDR5 support instead of LGA1200 and DDR4.

Trade-offs

❌Lower Geekbench single-core performance for gaming (1,948 vs 1,960).
❌Lower Cinebench R23 multi-core (9,315 vs 10,350).
❌No boxed cooler included, unlike Core i5-11400.

Quick Answers

So, is Core i5-11400 better than Core Ultra 5 135U?

Yes. Core i5-11400 is the better all-around CPU here. It gives you a 1.1% average FPS lead across 50 shared CPU game tests in our data and 11.1% better Cinebench R23 multi-core, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Core i5-11400 is the better pick. According to our tests, it delivers 1.1% 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 i5-11400 is the stronger fit. You are getting 11.1% better Cinebench R23 multi-core, backed by 6 cores and 12 threads.

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

Core i5-11400 is the better buy right now. Core i5-11400 comes in at an unclear MSRP at $182 MSRP versus unclear MSRP, and it still gives you a 1.1% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (91.6 vs 0.0 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Core Ultra 5 135U makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2023 vs 2021) and a healthier platform with FCBGA2049 and DDR5 instead of LGA1200. That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

Core i5-11400 vs Core Ultra 5 135U Technical Specifications

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

Core i5-11400

The Core i5-11400 is manufactured by Intel. It was released in 16 March 2021 (4 years ago). It is based on the Rocket Lake (2021) architecture. It features 6 cores and 12 threads. Base frequency is 2.6 GHz, with boost up to 4.4 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: DDR4-3200. Passmark benchmark score: 16,670 points. Launch price was $299.

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 i5-11400 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 4.4 GHz on the Core i5-11400 versus 4.4 GHz on the Core Ultra 5 135U — identical boost frequencies (base: 2.6 GHz vs 1.6 GHz). The Core i5-11400 uses the Rocket Lake (2021) architecture (14 nm), while the Core Ultra 5 135U uses Meteor Lake-P (2023) (7 nm). In PassMark, the Core i5-11400 scores 16,670 against the Core Ultra 5 135U's 16,900 — a 1.4% lead for the Core Ultra 5 135U. Cinebench R23 multi-core: 10,350 vs 9,315 (10.5% advantage for the Core i5-11400). Geekbench 6 single-core — the metric most relevant to gaming — records 1,960 vs 1,948, a 0.6% lead for the Core i5-11400 that directly translates to higher frame rates. Multi-core Geekbench: 7,260 vs 8,000 (9.7% advantage for the Core Ultra 5 135U). Both processors carry 12 MB (total) of L3 cache.

Feature	Core i5-11400	Core Ultra 5 135U
Cores / Threads	6 / 12	12 / 14+100%
Boost Clock	4.4 GHz	4.4 GHz
Base Clock	2.6 GHz+63%	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	Rocket Lake (2021)	Meteor Lake-P (2023)
PassMark	16,670	16,900+1%
Cinebench R23 Multi	10,350+11%	9,315
Geekbench 6 Single	1,960	1,948
Geekbench 6 Multi	7,260	8,000+10%

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Memory & Platform

The Core i5-11400 uses the LGA1200 socket (PCIe 4.0), while the Core Ultra 5 135U uses FCBGA2049 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-3200 on the Core i5-11400 versus DDR5-5600 on the Core Ultra 5 135U — the Core Ultra 5 135U supports 75% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core i5-11400 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. Both provide 20 PCIe lanes. Chipset compatibility: B560,Z590 (Core i5-11400) and SoC (Core Ultra 5 135U).

Feature	Core i5-11400	Core Ultra 5 135U
Socket	LGA1200	FCBGA2049
PCIe Generation	PCIe 4.0	PCIe 5.0+25%
Max RAM Speed	DDR4-3200	DDR5-5600+75%
Max RAM Capacity	128 GB+33%	96 GB
RAM Channels	2	2
ECC Support	No	No
PCIe Lanes	20	20

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Advanced Features

Only the Core i5-11400 supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: VT-x, VT-d (Core i5-11400) vs Yes (Core Ultra 5 135U). Both include integrated graphics — Intel UHD Graphics 730 (Core i5-11400) and Intel Arc Graphics (Core Ultra 5 135U) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Core i5-11400 targets Mainstream Desktop. Direct competitor: Core i5-11400 rivals Ryzen 5 5600X.

Feature	Core i5-11400	Core Ultra 5 135U
Integrated GPU	Yes	Yes
IGPU Model	Intel UHD Graphics 730	Intel Arc Graphics
Unlocked	No	—
AVX-512	Yes	No
Virtualization	VT-x, VT-d	Yes
Target Use	Mainstream Desktop	—