Core Ultra 7 155U vs Ryzen 9 5900X

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 Ultra 7 155U

2023

Why buy it

✅Newer platform on FCBGA2049 with DDR5 support instead of AM4 and DDR4.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 5900X across 46 shared CPU benchmark tests.
❌Lower PassMark (16,185 vs 38,955).
❌Smaller total L3 cache (12 MB vs 64 MB).

Ryzen 9 5900X

2020

Why buy it

✅Better for gaming: +40.8% higher average FPS across 46 shared CPU benchmark tests.
✅+433.3% larger total L3 cache (64 MB vs 12 MB).
✅100+% more PCIe lanes (24 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌Launch MSRP is still $549 MSRP, while Core Ultra 7 155U mostly shows up through inconsistent older-market listings.
❌Older platform position on AM4 with DDR4, while Core Ultra 7 155U moves to FCBGA2049 and DDR5.

Core Ultra 7 155U

2023

Ryzen 9 5900X

2020

Why buy it

✅Newer platform on FCBGA2049 with DDR5 support instead of AM4 and DDR4.

Why buy it

✅Better for gaming: +40.8% higher average FPS across 46 shared CPU benchmark tests.
✅+433.3% larger total L3 cache (64 MB vs 12 MB).
✅100+% more PCIe lanes (24 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 5900X across 46 shared CPU benchmark tests.
❌Lower PassMark (16,185 vs 38,955).
❌Smaller total L3 cache (12 MB vs 64 MB).

Trade-offs

❌Launch MSRP is still $549 MSRP, while Core Ultra 7 155U mostly shows up through inconsistent older-market listings.
❌Older platform position on AM4 with DDR4, while Core Ultra 7 155U moves to FCBGA2049 and DDR5.

Quick Answers

So, is Ryzen 9 5900X better than Core Ultra 7 155U?

Yes. Ryzen 9 5900X is the better overall CPU here. You are getting a 40.8% average FPS lead across 46 shared CPU game tests in our data and 140.7% better PassMark, which makes it the stronger all-around choice.

Which one is better for gaming?

If gaming is the priority, Ryzen 9 5900X is the better pick here. According to our tests, it delivers 40.8% more average FPS across 46 shared CPU game tests.

Which one is better for streaming, content creation, and heavy multitasking?

For streaming, content creation, and heavier multitasking, Ryzen 9 5900X is the better fit. You are getting 140.7% better PassMark, backed by 12 cores and 24 threads. It also carries the larger cache pool with 433.3% larger total L3 cache (64 MB vs 12 MB).

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

Ryzen 9 5900X is the smarter buy today. Ryzen 9 5900X is at an unclear MSRP at $549 MSRP versus unclear MSRP, and it gives you a 40.8% average FPS lead across 46 shared CPU game tests in our data. It is also 100.0% better value on MSRP (71.0 vs 0.0 PassMark/$), so the better CPU is not just faster, it is also the cleaner value play on paper.

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

Core Ultra 7 155U is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2023 vs 2020) and a healthier platform with FCBGA2049 and DDR5 instead of AM4. 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 Ultra 7 155U Benchmark Check

Ryzen 9 5900X Benchmark Check

Path of Exile 2

Preset	Core Ultra 7 155U	Ryzen 9 5900X
1080p
low	276 FPS	323 FPS
medium	248 FPS	291 FPS
high	209 FPS	243 FPS
ultra	180 FPS	193 FPS
1440p
low	230 FPS	307 FPS
medium	185 FPS	248 FPS
high	152 FPS	192 FPS
ultra	133 FPS	157 FPS
4K
low	160 FPS	193 FPS
medium	130 FPS	156 FPS
high	100 FPS	115 FPS
ultra	88 FPS	103 FPS

Open Core Ultra 7 155U Open Ryzen 9 5900X

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Core Ultra 7 155U	Ryzen 9 5900X
1080p
low	214 FPS	772 FPS
medium	176 FPS	647 FPS
high	159 FPS	508 FPS
ultra	140 FPS	450 FPS
1440p
low	181 FPS	619 FPS
medium	155 FPS	536 FPS
high	143 FPS	443 FPS
ultra	122 FPS	364 FPS
4K
low	141 FPS	365 FPS
medium	124 FPS	318 FPS
high	118 FPS	289 FPS
ultra	101 FPS	255 FPS

Open Core Ultra 7 155U Open Ryzen 9 5900X

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Core Ultra 7 155U	Ryzen 9 5900X
1080p
low	405 FPS	832 FPS
medium	405 FPS	645 FPS
high	405 FPS	558 FPS
ultra	405 FPS	459 FPS
1440p
low	405 FPS	721 FPS
medium	405 FPS	565 FPS
high	405 FPS	488 FPS
ultra	405 FPS	407 FPS
4K
low	405 FPS	511 FPS
medium	405 FPS	421 FPS
high	405 FPS	374 FPS
ultra	342 FPS	308 FPS

Open Core Ultra 7 155U Open Ryzen 9 5900X

League of Legends

League of Legends

Valorant

Preset	Core Ultra 7 155U	Ryzen 9 5900X
1080p
low	405 FPS	974 FPS
medium	405 FPS	974 FPS
high	405 FPS	934 FPS
ultra	405 FPS	826 FPS
1440p
low	405 FPS	959 FPS
medium	405 FPS	843 FPS
high	405 FPS	726 FPS
ultra	405 FPS	617 FPS
4K
low	405 FPS	694 FPS
medium	405 FPS	621 FPS
high	405 FPS	541 FPS
ultra	403 FPS	437 FPS

Open Core Ultra 7 155U Open Ryzen 9 5900X

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Core Ultra 7 155U and Ryzen 9 5900X

Core Ultra 7 155U

The Core Ultra 7 155U 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 1.7 GHz, with boost up to 4.8 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: 16,185 points. Launch price was $490.

Ryzen 9 5900X

The Ryzen 9 5900X is manufactured by AMD. It was released in 5 November 2020 (5 years ago). It is based on the Vermeer (Zen3) (2020−2022) architecture. It features 12 cores and 24 threads. Base frequency is 3.7 GHz, with boost up to 4.8 GHz. L3 cache: 64 MB. L2 cache: 512K (per core). Built on 7 nm, 12 nm process technology. Socket: AM4. Thermal design power (TDP): 105 Watt. Memory support: DDR4-3200. Passmark benchmark score: 38,955 points. Launch price was $549.

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Processing Power

The Core Ultra 7 155U packs 12 cores / 14 threads, matching the Ryzen 9 5900X's 12 cores. Boost clocks reach 4.8 GHz on the Core Ultra 7 155U versus 4.8 GHz on the Ryzen 9 5900X — identical boost frequencies (base: 1.7 GHz vs 3.7 GHz). The Core Ultra 7 155U uses the Meteor Lake-P (2023) architecture (7 nm), while the Ryzen 9 5900X uses Vermeer (Zen3) (2020−2022) (7 nm, 12 nm). In PassMark, the Core Ultra 7 155U scores 16,185 against the Ryzen 9 5900X's 38,955 — a 82.6% lead for the Ryzen 9 5900X. L3 cache: 12 MB (total) on the Core Ultra 7 155U vs 64 MB on the Ryzen 9 5900X.

Feature	Core Ultra 7 155U	Ryzen 9 5900X
Cores / Threads	12 / 14	12 / 24
Boost Clock	4.8 GHz	4.8 GHz
Base Clock	1.7 GHz	3.7 GHz+118%
L3 Cache	12 MB (total)	64 MB+433%
L2 Cache	2 MB (per core)+300%	512K (per core)
Process	7 nm	7 nm, 12 nm
Architecture	Meteor Lake-P (2023)	Vermeer (Zen3) (2020−2022)
PassMark	16,185	38,955+141%
Cinebench R23 Multi	—	21,000
Geekbench 6 Single	—	2,174
Geekbench 6 Multi	—	11,888

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Memory & Platform

The Core Ultra 7 155U uses the FCBGA2049 socket (PCIe 5.0), while the Ryzen 9 5900X uses AM4 (PCIe 4.0) — making them incompatible on the same motherboard.

Feature	Core Ultra 7 155U	Ryzen 9 5900X
Socket	FCBGA2049	AM4
PCIe Generation	PCIe 5.0+25%	PCIe 4.0
Max RAM Speed	—	DDR4-3200
Max RAM Capacity	—	128 GB
RAM Channels	—	2
ECC Support	—	Yes
PCIe Lanes	—	24

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Advanced Features

Virtualization: not specified (Core Ultra 7 155U) / AMD-V (Ryzen 9 5900X). Primary use case: Ryzen 9 5900X targets Workstation. Direct competitor: Ryzen 9 5900X rivals Core i9-12900K.