Core Ultra 9 275HX vs Ryzen 9 9955HX

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 9 275HX

2025

Why buy it

✅Better for gaming: +7.2% higher average FPS across 50 shared CPU benchmark tests.

Trade-offs

❌Lower Geekbench multi-core (17,908 vs 19,563).
❌Smaller total L3 cache (36 MB vs 64 MB).

Ryzen 9 9955HX

2025

Why buy it

✅+9.2% higher Geekbench multi-core.
✅+77.8% larger total L3 cache (64 MB vs 36 MB).
✅16.7% more PCIe lanes (28 vs 24) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Core Ultra 9 275HX across 50 shared CPU benchmark tests.

Core Ultra 9 275HX

2025

Ryzen 9 9955HX

2025

Why buy it

✅Better for gaming: +7.2% higher average FPS across 50 shared CPU benchmark tests.

Why buy it

✅+9.2% higher Geekbench multi-core.
✅+77.8% larger total L3 cache (64 MB vs 36 MB).
✅16.7% more PCIe lanes (28 vs 24) for storage and expansion-heavy builds.

Trade-offs

❌Lower Geekbench multi-core (17,908 vs 19,563).
❌Smaller total L3 cache (36 MB vs 64 MB).

Trade-offs

❌Worse for gaming: lower average FPS than Core Ultra 9 275HX across 50 shared CPU benchmark tests.

Quick Answers

So, is Core Ultra 9 275HX better than Ryzen 9 9955HX?

It depends on what matters more to you. For gaming, Core Ultra 9 275HX is ahead with a 7.2% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Ryzen 9 9955HX pulls ahead with 9.2% better Geekbench multi-core. Ryzen 9 9955HX also has the bigger cache pool with 77.8% larger total L3 cache (64 MB vs 36 MB).

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

For streaming, content creation, and heavier multitasking, Ryzen 9 9955HX is the better fit. You are getting 9.2% better Geekbench multi-core, backed by 16 cores and 32 threads. It also carries the larger cache pool with 77.8% larger total L3 cache (64 MB vs 36 MB).

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

Core Ultra 9 275HX still looks like the safer overall buy. Core Ultra 9 275HX is at an unclear MSRP at unclear MSRP versus unclear MSRP, and it gives you a 7.2% average FPS lead across 50 shared CPU game tests in our data.

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

Ryzen 9 9955HX is the safer long-term CPU choice because it gives you more overall headroom and a better platform outlook.

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 9 275HX Benchmark Check

Ryzen 9 9955HX Benchmark Check

Path of Exile 2

Preset	Core Ultra 9 275HX	Ryzen 9 9955HX
1080p
low	309 FPS	284 FPS
medium	299 FPS	261 FPS
high	246 FPS	214 FPS
ultra	208 FPS	180 FPS
1440p
low	269 FPS	260 FPS
medium	228 FPS	217 FPS
high	175 FPS	167 FPS
ultra	154 FPS	147 FPS
4K
low	179 FPS	181 FPS
medium	151 FPS	151 FPS
high	112 FPS	115 FPS
ultra	101 FPS	102 FPS

Open Core Ultra 9 275HX Open Ryzen 9 9955HX

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Core Ultra 9 275HX	Ryzen 9 9955HX
1080p
low	802 FPS	666 FPS
medium	700 FPS	577 FPS
high	565 FPS	433 FPS
ultra	495 FPS	369 FPS
1440p
low	682 FPS	564 FPS
medium	614 FPS	503 FPS
high	505 FPS	389 FPS
ultra	408 FPS	305 FPS
4K
low	382 FPS	318 FPS
medium	349 FPS	288 FPS
high	326 FPS	253 FPS
ultra	283 FPS	214 FPS

Open Core Ultra 9 275HX Open Ryzen 9 9955HX

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Core Ultra 9 275HX	Ryzen 9 9955HX
1080p
low	866 FPS	848 FPS
medium	708 FPS	678 FPS
high	628 FPS	600 FPS
ultra	537 FPS	515 FPS
1440p
low	744 FPS	678 FPS
medium	611 FPS	542 FPS
high	529 FPS	469 FPS
ultra	453 FPS	397 FPS
4K
low	527 FPS	482 FPS
medium	446 FPS	399 FPS
high	403 FPS	359 FPS
ultra	344 FPS	301 FPS

Open Core Ultra 9 275HX Open Ryzen 9 9955HX

League of Legends

League of Legends

Valorant

Preset	Core Ultra 9 275HX	Ryzen 9 9955HX
1080p
low	1078 FPS	1071 FPS
medium	959 FPS	966 FPS
high	841 FPS	843 FPS
ultra	757 FPS	759 FPS
1440p
low	862 FPS	840 FPS
medium	756 FPS	746 FPS
high	660 FPS	651 FPS
ultra	585 FPS	564 FPS
4K
low	635 FPS	618 FPS
medium	565 FPS	553 FPS
high	500 FPS	487 FPS
ultra	437 FPS	420 FPS

Open Core Ultra 9 275HX Open Ryzen 9 9955HX

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Core Ultra 9 275HX and Ryzen 9 9955HX

Core Ultra 9 275HX

The Core Ultra 9 275HX is manufactured by Intel. It was released in 2025-01-01. It is based on the Arrow Lake-HX (2025) architecture. It features 24 cores and 24 threads. Base frequency is 2.7 GHz, with boost up to 5.4 GHz. L3 cache: 36 MB (total). L2 cache: 3 MB (per core). Built on 3 nm process technology. Socket: FCBGA2114. Thermal design power (TDP): 55 Watt. Memory support: DDR5-6400. Passmark benchmark score: 56,018 points. Launch price was $600.

Ryzen 9 9955HX

The Ryzen 9 9955HX is manufactured by AMD. It was released in 2025-01-01. It is based on the Fire Range-HX (Zen 5) (2025) architecture. It features 16 cores and 32 threads. Base frequency is 2.5 GHz, with boost up to 5.4 GHz. L3 cache: 64 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: FL1. Thermal design power (TDP): 55 Watt. Memory support: DDR5. Passmark benchmark score: 55,711 points. Launch price was $650.

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Processing Power

The Core Ultra 9 275HX packs 24 cores / 24 threads, while the Ryzen 9 9955HX offers 16 cores / 32 threads — the Core Ultra 9 275HX has 8 more cores. Boost clocks reach 5.4 GHz on the Core Ultra 9 275HX versus 5.4 GHz on the Ryzen 9 9955HX — identical boost frequencies (base: 2.7 GHz vs 2.5 GHz). The Core Ultra 9 275HX uses the Arrow Lake-HX (2025) architecture (3 nm), while the Ryzen 9 9955HX uses Fire Range-HX (Zen 5) (2025) (4 nm). In PassMark, the Core Ultra 9 275HX scores 56,018 against the Ryzen 9 9955HX's 55,711 — a 0.5% lead for the Core Ultra 9 275HX. Geekbench 6 single-core — the metric most relevant to gaming — records 2,835 vs 3,219, a 12.7% lead for the Ryzen 9 9955HX that directly translates to higher frame rates. Multi-core Geekbench: 17,908 vs 19,563 (8.8% advantage for the Ryzen 9 9955HX). L3 cache: 36 MB (total) on the Core Ultra 9 275HX vs 64 MB (total) on the Ryzen 9 9955HX.

Feature	Core Ultra 9 275HX	Ryzen 9 9955HX
Cores / Threads	24 / 24+50%	16 / 32
Boost Clock	5.4 GHz	5.4 GHz
Base Clock	2.7 GHz+8%	2.5 GHz
L3 Cache	36 MB (total)	64 MB (total)+78%
L2 Cache	3 MB (per core)+200%	1 MB (per core)
Process	3 nm-25%	4 nm
Architecture	Arrow Lake-HX (2025)	Fire Range-HX (Zen 5) (2025)
PassMark	56,018	55,711
Cinebench R23 Multi	—	38,010
Geekbench 6 Single	2,835	3,219+14%
Geekbench 6 Multi	17,908	19,563+9%

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Memory & Platform

The Core Ultra 9 275HX uses the FCBGA2114 socket (PCIe 5.0), while the Ryzen 9 9955HX uses FL1 (PCIe 5.0) — making them incompatible on the same motherboard. Both support up to DDR5-6400 memory speed. The Core Ultra 9 275HX supports up to 256 GB of RAM compared to 96 GB — 90.9% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 24 (Core Ultra 9 275HX) vs 28 (Ryzen 9 9955HX) — the Ryzen 9 9955HX offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: HM870,WM880 (Core Ultra 9 275HX) and AMD FL1 (Ryzen 9 9955HX).

Feature	Core Ultra 9 275HX	Ryzen 9 9955HX
Socket	FCBGA2114	FL1
PCIe Generation	PCIe 5.0	PCIe 5.0
Max RAM Speed	DDR5-6400	DDR5-5600
Max RAM Capacity	256 GB+167%	96 GB
RAM Channels	2	2
ECC Support	No	Yes
PCIe Lanes	24	28+17%

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Advanced Features

Both processors feature an unlocked multiplier for overclocking. Only the Ryzen 9 9955HX supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: VT-x, VT-d (Core Ultra 9 275HX) vs true (Ryzen 9 9955HX). Both include integrated graphics — Intel Arc Graphics (Core Ultra 9 275HX) and Radeon 610M (Ryzen 9 9955HX) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Core Ultra 9 275HX targets High-End Gaming Laptop. Direct competitor: Core Ultra 9 275HX rivals Ryzen 9 9955HX; Ryzen 9 9955HX rivals Core Ultra 9 275HX.