Core Ultra 7 255HX vs Ryzen 7 7800X3D

Core Ultra 7 255HX vs Ryzen 7 7800X3D Performance Spectrum

Core Ultra 7 255HX

20 / 20

49,765

+45.1%

34,293

0.0%

Ryzen Threadripper PRO 7965WX

Ryzen Threadripper 7970X

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 7 7800X3D 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 7 7800X3D: 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

✅+12.6% higher Geekbench multi-core.
✅Draws 55W instead of 120W, a 65W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 7 7800X3D across 30 shared CPU benchmark tests.

Ryzen 7 7800X3D

2023

Why buy it

✅Better for gaming: +28.9% higher average FPS across 30 shared CPU benchmark tests.
✅16.7% more PCIe lanes (28 vs 24) for storage and expansion-heavy builds.

Trade-offs

❌Lower Geekbench multi-core (15,000 vs 16,885).
❌Launch MSRP is still $449 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 Core Ultra 7 255HX better than Ryzen 7 7800X3D?

It depends on what you want from the system. For gaming, Ryzen 7 7800X3D is ahead with a 28.9% average FPS lead across 30 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Core Ultra 7 255HX pulls ahead with 12.6% better Geekbench multi-core. Ryzen 7 7800X3D also has the bigger cache pool with 220% larger total L3 cache (96 MB vs 30 MB).

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

For streaming, content creation, and heavier multitasking, Core Ultra 7 255HX is the stronger fit. You are getting 12.6% better Geekbench multi-core, backed by 20 cores and 20 threads.

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

Core Ultra 7 255HX is still the faster CPU overall, but Ryzen 7 7800X3D is easier to justify if budget matters more than peak performance. Core Ultra 7 255HX comes in at an unclear MSRP at unclear MSRP versus $449 MSRP, and it still gives you 12.6% better Geekbench multi-core. The compromise is that Ryzen 7 7800X3D is still the better pure gaming CPU with a 28.9% average FPS lead across 30 shared CPU game tests in our data. Ryzen 7 7800X3D is also 100.0% better value on MSRP (76.4 vs 0.0 PassMark/$), which is why it can still make sense for tighter-budget builds 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) and more multi-core headroom with 20 cores / 20 threads instead of 8/16. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Core Ultra 7 255HX vs Ryzen 7 7800X3D 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 7 7800X3D

The Ryzen 7 7800X3D is manufactured by AMD. It was released in 4 January 2023 (2 years ago). It is based on the Raphael (Zen4) (2022−2023) architecture. It features 8 cores and 16 threads. Base frequency is 4.4 GHz, with boost up to 5 GHz. L3 cache: 96 MB (total). L2 cache: 1 MB (per core). Built on 5 nm process technology. Socket: AM5. Thermal design power (TDP): 120 Watt. Memory support: DDR5-5200. Passmark benchmark score: 34,293 points. Launch price was $449.

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Processing Power

The Core Ultra 7 255HX packs 20 cores / 20 threads, while the Ryzen 7 7800X3D offers 8 cores / 16 threads — the Core Ultra 7 255HX has 12 more cores. Boost clocks reach 5.2 GHz on the Core Ultra 7 255HX versus 5 GHz on the Ryzen 7 7800X3D — a 3.9% clock advantage for the Core Ultra 7 255HX (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 7 7800X3D uses Raphael (Zen4) (2022−2023) (5 nm). In PassMark, the Core Ultra 7 255HX scores 49,765 against the Ryzen 7 7800X3D's 34,293 — a 36.8% lead for the Core Ultra 7 255HX. Geekbench 6 single-core — the metric most relevant to gaming — records 2,923 vs 2,700, a 7.9% lead for the Core Ultra 7 255HX that directly translates to higher frame rates. Multi-core Geekbench: 16,885 vs 15,000 (11.8% advantage for the Core Ultra 7 255HX). L3 cache: 30 MB (total) on the Core Ultra 7 255HX vs 96 MB (total) on the Ryzen 7 7800X3D.

Feature	Core Ultra 7 255HX	Ryzen 7 7800X3D
Cores / Threads	20 / 20+150%	8 / 16
Boost Clock	5.2 GHz+4%	5 GHz
Base Clock	2.4 GHz	4.4 GHz+83%
L3 Cache	30 MB (total)	96 MB (total)+220%
L2 Cache	3 MB (per core)+200%	1 MB (per core)
Process	3 nm-40%	5 nm
Architecture	Arrow Lake-HX (2025)	Raphael (Zen4) (2022−2023)
PassMark	49,765+45%	34,293
Cinebench R23 Multi	—	18,500
Geekbench 6 Single	2,923+8%	2,700
Geekbench 6 Multi	16,885+13%	15,000

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Memory & Platform

The Core Ultra 7 255HX uses the FCBGA2114 socket (PCIe 5.0), while the Ryzen 7 7800X3D 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 DDR5-5200 on the Ryzen 7 7800X3D — 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 7 7800X3D) — the Ryzen 7 7800X3D offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Intel HM870,Intel WM880 (Core Ultra 7 255HX) and X670E,X670,B650E,B650,A620 (Ryzen 7 7800X3D).

Feature	Core Ultra 7 255HX	Ryzen 7 7800X3D
Socket	FCBGA2114	AM5
PCIe Generation	PCIe 5.0	PCIe 5.0
Max RAM Speed	DDR5-6400+23%	DDR5-5200
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 7 7800X3D supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: true (Core Ultra 7 255HX) vs AMD-V (Ryzen 7 7800X3D). Both include integrated graphics — Intel Arc Xe-LPG (Core Ultra 7 255HX) and AMD Radeon Graphics (2-core) (Ryzen 7 7800X3D) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Ryzen 7 7800X3D targets Gaming. Direct competitor: Core Ultra 7 255HX rivals Ryzen 9 9850HX; Ryzen 7 7800X3D rivals Intel Core i7-14700K.