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

✅+42% higher Geekbench multi-core.
✅Draws 55W instead of 105W, a 50W reduction.
✅Newer platform on FCBGA2114 with DDR5 support instead of AM4 and DDR4.
✅Integrated graphics onboard with Intel Arc Xe-LPG, while Ryzen 9 5900X needs a discrete GPU.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 5900X across 50 shared CPU benchmark tests.
❌Smaller total L3 cache (30 MB vs 64 MB).

Ryzen 9 5900X

2020

Why buy it

✅Better for gaming: +12.0% higher average FPS across 50 shared CPU benchmark tests.
✅+113.3% larger total L3 cache (64 MB vs 30 MB).

Trade-offs

❌Lower Geekbench multi-core (11,888 vs 16,885).
❌Launch MSRP is still $549 MSRP, while Core Ultra 7 255HX mostly shows up through inconsistent older-market listings.
❌90.9% higher power demand at 105W vs 55W.
❌Older platform position on AM4 with DDR4, while Core Ultra 7 255HX moves to FCBGA2114 and DDR5.
❌No integrated graphics, while Core Ultra 7 255HX can still boot and troubleshoot without a discrete GPU.

Core Ultra 7 255HX

2025

Ryzen 9 5900X

2020

Why buy it

✅+42% higher Geekbench multi-core.
✅Draws 55W instead of 105W, a 50W reduction.
✅Newer platform on FCBGA2114 with DDR5 support instead of AM4 and DDR4.
✅Integrated graphics onboard with Intel Arc Xe-LPG, while Ryzen 9 5900X needs a discrete GPU.

Why buy it

✅Better for gaming: +12.0% higher average FPS across 50 shared CPU benchmark tests.
✅+113.3% larger total L3 cache (64 MB vs 30 MB).

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 5900X across 50 shared CPU benchmark tests.
❌Smaller total L3 cache (30 MB vs 64 MB).

Trade-offs

❌Lower Geekbench multi-core (11,888 vs 16,885).
❌Launch MSRP is still $549 MSRP, while Core Ultra 7 255HX mostly shows up through inconsistent older-market listings.
❌90.9% higher power demand at 105W vs 55W.
❌Older platform position on AM4 with DDR4, while Core Ultra 7 255HX moves to FCBGA2114 and DDR5.
❌No integrated graphics, while Core Ultra 7 255HX can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Core Ultra 7 255HX better than Ryzen 9 5900X?

It depends on what matters more to you. For gaming, Ryzen 9 5900X is ahead with a 12.0% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Core Ultra 7 255HX pulls ahead with 42% better Geekbench multi-core. Ryzen 9 5900X also has the bigger cache pool with 113.3% larger total L3 cache (64 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 better fit. You are getting 42% 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 9 5900X makes more sense if price matters more than absolute performance. Core Ultra 7 255HX is at an unclear MSRP at unclear MSRP versus $549 MSRP, and it gives you 42% better Geekbench multi-core. The trade-off is that Ryzen 9 5900X is still the better pure gaming CPU with a 12.0% average FPS lead across 50 shared CPU game tests in our data. Ryzen 9 5900X is also 100.0% better value on MSRP (71.0 vs 0.0 PassMark/$), which is why it is easier to justify for price-conscious builds 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 2020), a healthier platform with FCBGA2114 and DDR5 instead of AM4, and more multi-core headroom with 20 cores / 20 threads instead of 12/24. 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 255HX Benchmark Check

Ryzen 9 5900X Benchmark Check

Path of Exile 2

Preset	Core Ultra 7 255HX	Ryzen 9 5900X
1080p
low	280 FPS	323 FPS
medium	272 FPS	291 FPS
high	228 FPS	243 FPS
ultra	191 FPS	193 FPS
1440p
low	225 FPS	307 FPS
medium	193 FPS	248 FPS
high	156 FPS	192 FPS
ultra	135 FPS	157 FPS
4K
low	151 FPS	193 FPS
medium	129 FPS	156 FPS
high	99 FPS	115 FPS
ultra	87 FPS	103 FPS

Open Core Ultra 7 255HX Open Ryzen 9 5900X

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Core Ultra 7 255HX	Ryzen 9 5900X
1080p
low	673 FPS	772 FPS
medium	574 FPS	647 FPS
high	483 FPS	508 FPS
ultra	438 FPS	450 FPS
1440p
low	584 FPS	619 FPS
medium	515 FPS	536 FPS
high	434 FPS	443 FPS
ultra	370 FPS	364 FPS
4K
low	345 FPS	365 FPS
medium	310 FPS	318 FPS
high	292 FPS	289 FPS
ultra	254 FPS	255 FPS

Open Core Ultra 7 255HX Open Ryzen 9 5900X

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Core Ultra 7 255HX	Ryzen 9 5900X
1080p
low	839 FPS	832 FPS
medium	685 FPS	645 FPS
high	610 FPS	558 FPS
ultra	522 FPS	459 FPS
1440p
low	727 FPS	721 FPS
medium	596 FPS	565 FPS
high	519 FPS	488 FPS
ultra	441 FPS	407 FPS
4K
low	515 FPS	511 FPS
medium	434 FPS	421 FPS
high	394 FPS	374 FPS
ultra	336 FPS	308 FPS

Open Core Ultra 7 255HX Open Ryzen 9 5900X

League of Legends

League of Legends

Valorant

Preset	Core Ultra 7 255HX	Ryzen 9 5900X
1080p
low	995 FPS	974 FPS
medium	901 FPS	974 FPS
high	782 FPS	934 FPS
ultra	709 FPS	826 FPS
1440p
low	814 FPS	959 FPS
medium	724 FPS	843 FPS
high	627 FPS	726 FPS
ultra	555 FPS	617 FPS
4K
low	555 FPS	694 FPS
medium	501 FPS	621 FPS
high	449 FPS	541 FPS
ultra	396 FPS	437 FPS

Open Core Ultra 7 255HX Open Ryzen 9 5900X

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Core Ultra 7 255HX and Ryzen 9 5900X

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 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.

⚡

Processing Power

The Core Ultra 7 255HX packs 20 cores / 20 threads, while the Ryzen 9 5900X 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 4.8 GHz on the Ryzen 9 5900X — a 8% clock advantage for the Core Ultra 7 255HX (base: 2.4 GHz vs 3.7 GHz). The Core Ultra 7 255HX uses the Arrow Lake-HX (2025) architecture (3 nm), while the Ryzen 9 5900X uses Vermeer (Zen3) (2020−2022) (7 nm, 12 nm). In PassMark, the Core Ultra 7 255HX scores 49,765 against the Ryzen 9 5900X's 38,955 — a 24.4% lead for the Core Ultra 7 255HX. Geekbench 6 single-core — the metric most relevant to gaming — records 2,923 vs 2,174, a 29.4% lead for the Core Ultra 7 255HX that directly translates to higher frame rates. Multi-core Geekbench: 16,885 vs 11,888 (34.7% advantage for the Core Ultra 7 255HX). L3 cache: 30 MB (total) on the Core Ultra 7 255HX vs 64 MB on the Ryzen 9 5900X.

Feature	Core Ultra 7 255HX	Ryzen 9 5900X
Cores / Threads	20 / 20+67%	12 / 24
Boost Clock	5.2 GHz+8%	4.8 GHz
Base Clock	2.4 GHz	3.7 GHz+54%
L3 Cache	30 MB (total)	64 MB+113%
L2 Cache	3 MB (per core)+500%	512K (per core)
Process	3 nm-57%	7 nm, 12 nm
Architecture	Arrow Lake-HX (2025)	Vermeer (Zen3) (2020−2022)
PassMark	49,765+28%	38,955
Cinebench R23 Multi	—	21,000
Geekbench 6 Single	2,923+34%	2,174
Geekbench 6 Multi	16,885+42%	11,888

🧠

Memory & Platform

The Core Ultra 7 255HX uses the FCBGA2114 socket (PCIe 5.0), while the Ryzen 9 5900X uses AM4 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-6400 on the Core Ultra 7 255HX versus DDR4-3200 on the Ryzen 9 5900X — the Core Ultra 7 255HX supports 22.2% 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 — 40% more capacity for professional workloads. Both feature 2-channel memory with ECC support. Both provide 24 PCIe lanes. Chipset compatibility: Intel HM870,Intel WM880 (Core Ultra 7 255HX) and A320,B350,X370,B450,X470,B550,X570 (Ryzen 9 5900X).

Feature	Core Ultra 7 255HX	Ryzen 9 5900X
Socket	FCBGA2114	AM4
PCIe Generation	PCIe 5.0+25%	PCIe 4.0
Max RAM Speed	DDR5-6400+25%	DDR4-3200
Max RAM Capacity	192 GB+50%	128 GB
RAM Channels	2	2
ECC Support	No	Yes
PCIe Lanes	24	24

🔧

Advanced Features

Both processors feature an unlocked multiplier for overclocking. Virtualization support: true (Core Ultra 7 255HX) vs AMD-V (Ryzen 9 5900X). The Core Ultra 7 255HX includes integrated graphics (Intel Arc Xe-LPG), while the Ryzen 9 5900X requires a dedicated GPU. Primary use case: Ryzen 9 5900X targets Workstation. Direct competitor: Core Ultra 7 255HX rivals Ryzen 9 9850HX; Ryzen 9 5900X rivals Core i9-12900K.