Core i5-1240U vs Ryzen 9 5900H

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.

Head-to-Head Verdict, Benchmarks, Value & Long-Term Outlook

This comparison brings together gaming FPS, productivity performance, platform differences, power efficiency, pricing context, and upgrade path so you can see which CPU actually makes more sense.

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.

Core i5-1240U

2022

Ryzen 9 5900H

2021

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.

Why buy it

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

Trade-offs

❌Lower PassMark (13,387 vs 13,510).
❌Smaller total L3 cache (12 MB vs 16 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 overall CPU here. You are getting a 0.6% average FPS lead across 50 shared CPU game tests in our data and 0.9% better PassMark, which makes it the stronger all-around choice.

Which one is better for gaming?

If gaming is the priority, Ryzen 9 5900H is the better pick here. 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 better fit. You are getting 0.9% better PassMark, backed by 8 cores and 16 threads. It also carries 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 looks like the safer overall buy. Ryzen 9 5900H is at an unclear MSRP at unclear MSRP versus unclear MSRP, and it 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 is the more future-proof choice 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 should give you a better long-term upgrade path for motherboard, RAM, and future CPU swaps.

Games Benchmarks

Paired with RTX 4090

To accurately isolate CPU performance, all benchmarks below use an NVIDIA RTX 4090 as the reference GPU. This eliminates GPU-side bottlenecks and highlights pure processing throughput differences between the CPUs.

Note: Real-world results may vary based on your actual GPU. CPU performance impact is more visible in processing-intensive titles and high-refresh-rate gaming scenarios.

Core i5-1240U Benchmark Check

Ryzen 9 5900H Benchmark Check

Path of Exile 2

Preset	Core i5-1240U	Ryzen 9 5900H
1080p
low	186 FPS	181 FPS
medium	153 FPS	147 FPS
high	127 FPS	122 FPS
ultra	105 FPS	99 FPS
1440p
low	150 FPS	147 FPS
medium	119 FPS	116 FPS
high	97 FPS	95 FPS
ultra	80 FPS	78 FPS
4K
low	84 FPS	81 FPS
medium	72 FPS	69 FPS
high	58 FPS	55 FPS
ultra	45 FPS	43 FPS

Open Core i5-1240U Open Ryzen 9 5900H

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Core i5-1240U	Ryzen 9 5900H
1080p
low	208 FPS	338 FPS
medium	172 FPS	338 FPS
high	158 FPS	327 FPS
ultra	139 FPS	288 FPS
1440p
low	183 FPS	338 FPS
medium	156 FPS	338 FPS
high	146 FPS	300 FPS
ultra	125 FPS	256 FPS
4K
low	148 FPS	278 FPS
medium	130 FPS	246 FPS
high	124 FPS	227 FPS
ultra	107 FPS	197 FPS

Open Core i5-1240U Open Ryzen 9 5900H

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Core i5-1240U	Ryzen 9 5900H
1080p
low	335 FPS	338 FPS
medium	335 FPS	338 FPS
high	335 FPS	338 FPS
ultra	335 FPS	338 FPS
1440p
low	335 FPS	338 FPS
medium	335 FPS	338 FPS
high	335 FPS	338 FPS
ultra	335 FPS	338 FPS
4K
low	335 FPS	338 FPS
medium	335 FPS	338 FPS
high	335 FPS	326 FPS
ultra	272 FPS	259 FPS

Open Core i5-1240U Open Ryzen 9 5900H

League of Legends

League of Legends

Valorant

Preset	Core i5-1240U	Ryzen 9 5900H
1080p
low	335 FPS	338 FPS
medium	335 FPS	338 FPS
high	335 FPS	338 FPS
ultra	335 FPS	338 FPS
1440p
low	335 FPS	338 FPS
medium	335 FPS	338 FPS
high	335 FPS	338 FPS
ultra	335 FPS	338 FPS
4K
low	335 FPS	338 FPS
medium	335 FPS	338 FPS
high	335 FPS	338 FPS
ultra	335 FPS	338 FPS

Open Core i5-1240U Open Ryzen 9 5900H

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Core i5-1240U and Ryzen 9 5900H

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.