Core Ultra 7 255HX vs Ryzen 9 7900X3D

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 255HX

2025

Why buy it

✅Draws 55W instead of 120W, a 65W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 7900X3D across 50 shared CPU benchmark tests.
❌Lower PassMark (49,765 vs 50,213).

Ryzen 9 7900X3D

2023

Why buy it

✅Better for gaming: +27.5% higher average FPS across 50 shared CPU benchmark tests.
✅16.7% more PCIe lanes (28 vs 24) for storage and expansion-heavy builds.

Trade-offs

❌Launch MSRP is still $599 MSRP, while Core Ultra 7 255HX mostly shows up through inconsistent older-market listings.
❌118.2% higher power demand at 120W vs 55W.

Core Ultra 7 255HX

2025

Ryzen 9 7900X3D

2023

Why buy it

✅Draws 55W instead of 120W, a 65W reduction.

Why buy it

✅Better for gaming: +27.5% higher average FPS across 50 shared CPU benchmark tests.
✅16.7% more PCIe lanes (28 vs 24) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 7900X3D across 50 shared CPU benchmark tests.
❌Lower PassMark (49,765 vs 50,213).

Trade-offs

❌Launch MSRP is still $599 MSRP, while Core Ultra 7 255HX mostly shows up through inconsistent older-market listings.
❌118.2% higher power demand at 120W vs 55W.

Quick Answers

So, is Ryzen 9 7900X3D better than Core Ultra 7 255HX?

Yes. Ryzen 9 7900X3D is the better overall CPU here. You are getting a 27.5% 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 7900X3D is the better pick here. According to our tests, it delivers 27.5% more average FPS across 50 shared CPU game tests. It also has a big cache advantage at 128 MB vs 30 MB.

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

For streaming, content creation, and heavier multitasking, Ryzen 9 7900X3D is the better fit. You are getting 0.9% better PassMark, backed by 12 cores and 24 threads. It also carries the larger cache pool with 326.7% larger total L3 cache (128 MB vs 30 MB).

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

Ryzen 9 7900X3D is the smarter buy today. Ryzen 9 7900X3D is at an unclear MSRP at $599 MSRP versus unclear MSRP, and it gives you a 27.5% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (83.8 vs 0.0 PassMark/$), 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 255HX is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2025 vs 2023). That makes it the safer long-term pick.

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 255HX Benchmark Check

Ryzen 9 7900X3D Benchmark Check

Path of Exile 2

Preset	Core Ultra 7 255HX	Ryzen 9 7900X3D
1080p
low	280 FPS	272 FPS
medium	272 FPS	249 FPS
high	228 FPS	212 FPS
ultra	191 FPS	186 FPS
1440p
low	225 FPS	264 FPS
medium	193 FPS	217 FPS
high	156 FPS	172 FPS
ultra	135 FPS	155 FPS
4K
low	151 FPS	183 FPS
medium	129 FPS	150 FPS
high	99 FPS	113 FPS
ultra	87 FPS	101 FPS

Open Core Ultra 7 255HX Open Ryzen 9 7900X3D

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Core Ultra 7 255HX	Ryzen 9 7900X3D
1080p
low	673 FPS	845 FPS
medium	574 FPS	689 FPS
high	483 FPS	511 FPS
ultra	438 FPS	423 FPS
1440p
low	584 FPS	679 FPS
medium	515 FPS	578 FPS
high	434 FPS	445 FPS
ultra	370 FPS	345 FPS
4K
low	345 FPS	379 FPS
medium	310 FPS	326 FPS
high	292 FPS	286 FPS
ultra	254 FPS	241 FPS

Open Core Ultra 7 255HX Open Ryzen 9 7900X3D

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Core Ultra 7 255HX	Ryzen 9 7900X3D
1080p
low	839 FPS	1025 FPS
medium	685 FPS	1164 FPS
high	610 FPS	1101 FPS
ultra	522 FPS	875 FPS
1440p
low	727 FPS	972 FPS
medium	596 FPS	878 FPS
high	519 FPS	805 FPS
ultra	441 FPS	656 FPS
4K
low	515 FPS	597 FPS
medium	434 FPS	518 FPS
high	394 FPS	465 FPS
ultra	336 FPS	393 FPS

Open Core Ultra 7 255HX Open Ryzen 9 7900X3D

League of Legends

League of Legends

Valorant

Preset	Core Ultra 7 255HX	Ryzen 9 7900X3D
1080p
low	995 FPS	1255 FPS
medium	901 FPS	1015 FPS
high	782 FPS	993 FPS
ultra	709 FPS	865 FPS
1440p
low	814 FPS	1037 FPS
medium	724 FPS	899 FPS
high	627 FPS	774 FPS
ultra	555 FPS	649 FPS
4K
low	555 FPS	761 FPS
medium	501 FPS	664 FPS
high	449 FPS	578 FPS
ultra	396 FPS	437 FPS

Open Core Ultra 7 255HX Open Ryzen 9 7900X3D

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Core Ultra 7 255HX and Ryzen 9 7900X3D

Core Ultra 7 255HX

The Core Ultra 7 255HX is manufactured by Intel. It was released in 2025-01-01. It is based on the Arrow Lake-HX (2025) architecture. It features 20 cores and 20 threads. Base frequency is 2.4 GHz, with boost up to 5.2 GHz. L3 cache: 30 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: 49,765 points. Launch price was $450.

Ryzen 9 7900X3D

The Ryzen 9 7900X3D is manufactured by AMD. It was released in 4 January 2023 (2 years ago). It is based on the Raphael (2023−2025) architecture. It features 12 cores and 24 threads. Base frequency is 4.4 GHz, with boost up to 5.6 GHz. L3 cache: 128 MB (total). L2 cache: 1 MB (per core). Built on 5 nm, 6 nm process technology. Socket: AM5. Thermal design power (TDP): 120 Watt. Memory support: DDR5-5200. Passmark benchmark score: 50,213 points. Launch price was $599.

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Processing Power

The Core Ultra 7 255HX packs 20 cores / 20 threads, while the Ryzen 9 7900X3D offers 12 cores / 24 threads — the Core Ultra 7 255HX has 8 more cores. Boost clocks reach 5.2 GHz on the Core Ultra 7 255HX versus 5.6 GHz on the Ryzen 9 7900X3D — a 7.4% clock advantage for the Ryzen 9 7900X3D (base: 2.4 GHz vs 4.4 GHz). The Core Ultra 7 255HX uses the Arrow Lake-HX (2025) architecture (3 nm), while the Ryzen 9 7900X3D uses Raphael (2023−2025) (5 nm, 6 nm). In PassMark, the Core Ultra 7 255HX scores 49,765 against the Ryzen 9 7900X3D's 50,213 — a 0.9% lead for the Ryzen 9 7900X3D. L3 cache: 30 MB (total) on the Core Ultra 7 255HX vs 128 MB (total) on the Ryzen 9 7900X3D.

Feature	Core Ultra 7 255HX	Ryzen 9 7900X3D
Cores / Threads	20 / 20+67%	12 / 24
Boost Clock	5.2 GHz	5.6 GHz+8%
Base Clock	2.4 GHz	4.4 GHz+83%
L3 Cache	30 MB (total)	128 MB (total)+327%
L2 Cache	3 MB (per core)+200%	1 MB (per core)
Process	3 nm-40%	5 nm, 6 nm
Architecture	Arrow Lake-HX (2025)	Raphael (2023−2025)
PassMark	49,765	50,213
Geekbench 6 Single	2,923	—
Geekbench 6 Multi	16,885	—

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Memory & Platform

The Core Ultra 7 255HX uses the FCBGA2114 socket (PCIe 5.0), while the Ryzen 9 7900X3D uses AM5 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-6400 on the Core Ultra 7 255HX versus 5200 on the Ryzen 9 7900X3D — the Ryzen 9 7900X3D supports 199.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core Ultra 7 255HX supports up to 192 GB of RAM compared to 128 — 40% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 24 (Core Ultra 7 255HX) vs 28 (Ryzen 9 7900X3D) — the Ryzen 9 7900X3D offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Intel HM870,Intel WM880 (Core Ultra 7 255HX) and AM5 (Ryzen 9 7900X3D).

Feature	Core Ultra 7 255HX	Ryzen 9 7900X3D
Socket	FCBGA2114	AM5
PCIe Generation	PCIe 5.0	PCIe 5.0
Max RAM Speed	DDR5-6400	5200+103900%
Max RAM Capacity	192 GB+157286300%	128
RAM Channels	2	2
ECC Support	No	Yes
PCIe Lanes	24	28+17%

🔧

Advanced Features

Both processors feature an unlocked multiplier for overclocking. Only the Ryzen 9 7900X3D supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: true (Core Ultra 7 255HX) vs VT-x, VT-d, AMD-V (Ryzen 9 7900X3D). Both include integrated graphics — Intel Arc Xe-LPG (Core Ultra 7 255HX) and AMD Radeon Graphics (Ryzen 9 7900X3D) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Direct competitor: Core Ultra 7 255HX rivals Ryzen 9 9850HX; Ryzen 9 7900X3D rivals Core i7-14700K.