Core Ultra 5 135U vs Xeon E-2378

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 Ultra 5 135U vs Xeon E-2378 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 Ultra 5 135U vs Xeon E-2378: Pros, Cons & Final Verdict

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

Core Ultra 5 135U

2023

Why buy it

✅Newer platform on FCBGA2049 with DDR5 support instead of LGA1200 and DDR4.
✅Integrated graphics onboard with Intel Arc Graphics, while Xeon E-2378 needs a discrete GPU.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon E-2378 across 50 shared CPU benchmark tests.
❌Lower Geekbench multi-core (8,000 vs 9,986).
❌Smaller total L3 cache (12 MB vs 16 MB).
❌Less compelling for workstation-style loads than Xeon E-2378, which brings 8 cores / 16 threads.

Xeon E-2378

2021

Why buy it

✅Better for gaming: +13.6% higher average FPS across 50 shared CPU benchmark tests.
✅+33.3% larger total L3 cache (16 MB vs 12 MB).
✅Better for workstations and heavier parallel workloads: 8 cores / 16 threads.

Trade-offs

❌Launch MSRP is still $362 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.

Quick Answers

So, is Xeon E-2378 better than Core Ultra 5 135U?

Not really, because they are built for different jobs. Xeon E-2378 makes more sense for workstation-style multi-core throughput, while Core Ultra 5 135U is the more practical desktop choice for gaming, platform cost, and everyday use.

Which one is better for gaming?

If gaming is the priority, Xeon E-2378 is the better pick. According to our tests, it delivers 13.6% 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, Xeon E-2378 is the stronger fit. You are getting 24.8% better Geekbench multi-core, backed by 8 cores and 16 threads. It also has the larger cache pool with 33.3% larger total L3 cache (16 MB vs 12 MB).

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

Xeon E-2378 is the better buy right now. Xeon E-2378 comes in at an unclear MSRP at $362 MSRP versus unclear MSRP, and it still gives you a 13.6% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (47.2 vs 0.0 PassMark/$), 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 Ultra 5 135U vs Xeon E-2378 Technical Specifications

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

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.

Xeon E-2378

The Xeon E-2378 is manufactured by Intel. It was released in 2015-01-01. It is based on the Rocket Lake-E (2021) architecture. It features 8 cores and 16 threads. Base frequency is 2.6 GHz, with boost up to 4.8 GHz. L3 cache: 16 MB (total). L2 cache: 512K (per core). Built on 14 nm process technology. Socket: LGA1200. Thermal design power (TDP): 65 Watt. Memory support: DDR4-3200. Passmark benchmark score: 17,069 points. Launch price was $800.

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Processing Power

The Core Ultra 5 135U packs 12 cores / 14 threads, while the Xeon E-2378 offers 8 cores / 16 threads — the Core Ultra 5 135U has 4 more cores. Boost clocks reach 4.4 GHz on the Core Ultra 5 135U versus 4.8 GHz on the Xeon E-2378 — a 8.7% clock advantage for the Xeon E-2378 (base: 1.6 GHz vs 2.6 GHz). The Core Ultra 5 135U uses the Meteor Lake-P (2023) architecture (7 nm), while the Xeon E-2378 uses Rocket Lake-E (2021) (14 nm). In PassMark, the Core Ultra 5 135U scores 16,900 against the Xeon E-2378's 17,069 — a 1% lead for the Xeon E-2378. Geekbench 6 single-core — the metric most relevant to gaming — records 1,948 vs 1,821, a 6.7% lead for the Core Ultra 5 135U that directly translates to higher frame rates. Multi-core Geekbench: 8,000 vs 9,986 (22.1% advantage for the Xeon E-2378). L3 cache: 12 MB (total) on the Core Ultra 5 135U vs 16 MB (total) on the Xeon E-2378.

Feature	Core Ultra 5 135U	Xeon E-2378
Cores / Threads	12 / 14+50%	8 / 16
Boost Clock	4.4 GHz	4.8 GHz+9%
Base Clock	1.6 GHz	2.6 GHz+63%
L3 Cache	12 MB (total)	16 MB (total)+33%
L2 Cache	2 MB (per core)	512K (per core)+25500%
Process	7 nm-50%	14 nm
Architecture	Meteor Lake-P (2023)	Rocket Lake-E (2021)
PassMark	16,900	17,069+1%
Cinebench R23 Multi	9,315	—
Geekbench 6 Single	1,948+7%	1,821
Geekbench 6 Multi	8,000	9,986+25%

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Memory & Platform

The Core Ultra 5 135U uses the FCBGA2049 socket (PCIe 5.0), while the Xeon E-2378 uses LGA1200 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-5600 on the Core Ultra 5 135U versus DDR4-3200 on the Xeon E-2378 — the Core Ultra 5 135U supports 75% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon E-2378 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: SoC (Core Ultra 5 135U) and C252,C256 (Xeon E-2378).

Feature	Core Ultra 5 135U	Xeon E-2378
Socket	FCBGA2049	LGA1200
PCIe Generation	PCIe 5.0+25%	PCIe 4.0
Max RAM Speed	DDR5-5600+75%	DDR4-3200
Max RAM Capacity	96 GB	128 GB+33%
RAM Channels	2	2
ECC Support	No	Yes
PCIe Lanes	20	20

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Advanced Features

Only the Xeon E-2378 supports AVX-512 instructions — important for machine learning and scientific applications. Both support Yes virtualization. The Core Ultra 5 135U includes integrated graphics (Intel Arc Graphics), while the Xeon E-2378 requires a dedicated GPU.