Core Ultra 7 255HX vs Ryzen 9 7900X3D

Core Ultra 7 255HX vs Ryzen 9 7900X3D Performance Spectrum

Core Ultra 7 255HX

20 / 20

49,765

0.0%

50,213

+0.9%

Ryzen 7 5800XT

Ryzen AI 9 HX PRO 375

Ryzen 9 5900X

Ryzen 9 5900XT

Ryzen 9 9950X

Ryzen Threadripper 3990X

Ryzen Threadripper 9960X

Ryzen Threadripper PRO 9975WX

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 Ultra 7 255HX vs Ryzen 9 7900X3D 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 Ultra 7 255HX vs Ryzen 9 7900X3D: Pros, Cons & Final Verdict

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

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.

Quick Answers

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

Yes. Ryzen 9 7900X3D is the better all-around CPU here. It gives you a 27.5% 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 7900X3D is the better pick. According to our tests, it delivers 27.5% more average FPS across 50 shared CPU game tests. It also has a clear cache advantage at 128 MB versus 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 stronger fit. You are getting 0.9% better PassMark, backed by 12 cores and 24 threads. It also has 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 better buy right now. Ryzen 9 7900X3D comes in at an unclear MSRP at $599 MSRP versus unclear MSRP, and it still gives you a 27.5% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (83.8 vs 0.0 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Core Ultra 7 255HX makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2025 vs 2023). That makes it the safer long-term bet.

Core Ultra 7 255HX vs Ryzen 9 7900X3D Technical Specifications

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

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 Core Ultra 7 255HX supports 23.1% 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 GB — 50% 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+23%	5200
Max RAM Capacity	192 GB+50%	128 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 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.