Core i5-1240U vs Ryzen 9 5900H

Core i5-1240U vs Ryzen 9 5900H Performance Spectrum

Core i5-1240U

10 / 12

13,387

0.0%

13,510

+0.9%

Ryzen Threadripper PRO 7945WX

Ryzen Threadripper PRO 9955WX

Ryzen Threadripper 9960X

About PassMark

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 i5-1240U vs Ryzen 9 5900H 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 i5-1240U vs Ryzen 9 5900H: Pros, Cons & Final Verdict

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

Core i5-1240U

2022

Why buy it

✅Draws 10W instead of 45W, a 36W reduction.
✅Newer platform on FCBGA1781 with DDR5 support instead of FP6 and older memory support.
✅100+% more PCIe lanes (14 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with Iris Xe Graphics 80EU, while Ryzen 9 5900H needs a discrete GPU.

Trade-offs

❌Lower PassMark (13,387 vs 13,510).
❌Smaller total L3 cache (12 MB vs 16 MB).

Ryzen 9 5900H

2021

Why buy it

✅+33.3% larger total L3 cache (16 MB vs 12 MB).

Trade-offs

❌373.7% higher power demand at 45W vs 9.5W.
❌Older platform position on FP6, while Core i5-1240U moves to FCBGA1781 and DDR5.
❌No integrated graphics, while Core i5-1240U can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Ryzen 9 5900H better than Core i5-1240U?

Yes. Ryzen 9 5900H is the better all-around CPU here. It gives you a 0.6% average FPS lead across 50 shared CPU game tests in our data and 0.9% better PassMark, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Ryzen 9 5900H is the better pick. According to our tests, it delivers 0.6% 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, Ryzen 9 5900H is the stronger fit. You are getting 0.9% better PassMark, 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?

Ryzen 9 5900H still makes the most sense overall. Ryzen 9 5900H comes in at an unclear MSRP at unclear MSRP versus unclear MSRP, and it still gives you a 0.6% average FPS lead across 50 shared CPU game tests in our data.

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

Core i5-1240U makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2022 vs 2021) and a healthier platform with FCBGA1781 and DDR5 instead of FP6. That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

Core i5-1240U vs Ryzen 9 5900H Technical Specifications

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

Core i5-1240U

The Core i5-1240U is manufactured by Intel. It was released in 23 February 2022 (3 years ago). It is based on the Alder Lake-U (2022) architecture. It features 10 cores and 12 threads. Base frequency is 1.1 GHz, with boost up to 4.4 GHz. L3 cache: 12 MB (total). L2 cache: 1.25 MB (per core). Built on Intel 7 nm process technology. Socket: FCBGA1781. Thermal design power (TDP): 9.5 MB + 12 MB. Memory support: DDR4, DDR5. Passmark benchmark score: 13,387 points. Launch price was $149.

Ryzen 9 5900H

The Ryzen 9 5900H is manufactured by AMD. It was released in 7 January 2021 (4 years ago). It is based on the Cezanne U (Zen 3) (2021−2022) architecture. It features 8 cores and 16 threads. Base frequency is 3.3 GHz, with boost up to 4.6 GHz. L3 cache: 16 MB. L2 cache: 4 MB. Built on 7 nm process technology. Socket: FP6. Thermal design power (TDP): 45 Watt. Passmark benchmark score: 13,510 points. Launch price was $149.

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Processing Power

The Core i5-1240U packs 10 cores / 12 threads, while the Ryzen 9 5900H offers 8 cores / 16 threads — the Core i5-1240U has 2 more cores. Boost clocks reach 4.4 GHz on the Core i5-1240U versus 4.6 GHz on the Ryzen 9 5900H — a 4.4% clock advantage for the Ryzen 9 5900H (base: 1.1 GHz vs 3.3 GHz). The Core i5-1240U uses the Alder Lake-U (2022) architecture (Intel 7 nm), while the Ryzen 9 5900H uses Cezanne U (Zen 3) (2021−2022) (7 nm). In PassMark, the Core i5-1240U scores 13,387 against the Ryzen 9 5900H's 13,510 — a 0.9% lead for the Ryzen 9 5900H. L3 cache: 12 MB (total) on the Core i5-1240U vs 16 MB on the Ryzen 9 5900H.

Feature	Core i5-1240U	Ryzen 9 5900H
Cores / Threads	10 / 12+25%	8 / 16
Boost Clock	4.4 GHz	4.6 GHz+5%
Base Clock	1.1 GHz	3.3 GHz+200%
L3 Cache	12 MB (total)	16 MB+33%
L2 Cache	1.25 MB (per core)	4 MB+220%
Process	Intel 7 nm	7 nm
Architecture	Alder Lake-U (2022)	Cezanne U (Zen 3) (2021−2022)
PassMark	13,387	13,510
Geekbench 6 Single	1,650	—

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Memory & Platform

The Core i5-1240U uses the FCBGA1781 socket (PCIe 5.0), while the Ryzen 9 5900H uses FP6 (PCIe 4.0) — making them incompatible on the same motherboard.

Feature	Core i5-1240U	Ryzen 9 5900H
Socket	FCBGA1781	FP6
PCIe Generation	PCIe 5.0+25%	PCIe 4.0
Max RAM Speed	LPDDR5-5200	—
Max RAM Capacity	64 GB	—
RAM Channels	2	—
ECC Support	No	—
PCIe Lanes	14	—

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Advanced Features

Virtualization: VT-x, VT-d, EPT (Core i5-1240U) / not specified (Ryzen 9 5900H). The Core i5-1240U includes integrated graphics (Iris Xe Graphics 80EU), while the Ryzen 9 5900H requires a dedicated GPU. Primary use case: Core i5-1240U targets Thin & Light Laptop. Direct competitor: Core i5-1240U rivals Ryzen 5 5600U.