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.

Ryzen 9 9900X3D

2025

Why buy it

✅Better for gaming: +6.7% higher average FPS across 50 shared CPU benchmark tests.

Trade-offs

❌Launch MSRP is still $599 MSRP, while Ryzen 9 9955HX mostly shows up through inconsistent older-market listings.
❌118.2% higher power demand at 120W vs 55W.

Ryzen 9 9955HX

2025

Why buy it

✅Draws 55W instead of 120W, a 65W reduction.
✅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 9900X3D across 50 shared CPU benchmark tests.
❌Lower Geekbench multi-core (19,563 vs 26,000).

Ryzen 9 9900X3D

2025

Ryzen 9 9955HX

2025

Why buy it

✅Better for gaming: +6.7% higher average FPS across 50 shared CPU benchmark tests.

Why buy it

✅Draws 55W instead of 120W, a 65W reduction.
✅16.7% more PCIe lanes (28 vs 24) for storage and expansion-heavy builds.

Trade-offs

❌Launch MSRP is still $599 MSRP, while Ryzen 9 9955HX mostly shows up through inconsistent older-market listings.
❌118.2% higher power demand at 120W vs 55W.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 9900X3D across 50 shared CPU benchmark tests.
❌Lower Geekbench multi-core (19,563 vs 26,000).

Quick Answers

So, is Ryzen 9 9900X3D better than Ryzen 9 9955HX?

Yes. Ryzen 9 9900X3D is the better overall CPU here. You are getting a 6.7% average FPS lead across 50 shared CPU game tests in our data, 32.9% better Geekbench multi-core, 1.1% higher PassMark, and the stronger long-term platform, which makes it the stronger all-around choice.

Which one is better for gaming?

If gaming is the priority, Ryzen 9 9900X3D is the better pick here. According to our tests, it delivers 6.7% more average FPS across 50 shared CPU game tests. It also has a big cache advantage at 128 MB vs 64 MB.

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

For streaming, content creation, and heavier multitasking, Ryzen 9 9900X3D is the better fit. You are getting 32.9% better Geekbench multi-core, backed by 12 cores and 24 threads. It also carries the larger cache pool with 100% larger total L3 cache (128 MB vs 64 MB).

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

Ryzen 9 9900X3D is the smarter buy today. Ryzen 9 9900X3D is at an unclear MSRP at $599 MSRP versus unclear MSRP, and it gives you a 6.7% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (94.0 vs 0.0 PassMark/$), 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?

Ryzen 9 9900X3D is the more future-proof choice for 2026 and beyond. You are getting 3D V-Cache and a much larger 128 MB L3 cache instead of 64 MB and more multi-core headroom with 12 cores / 24 threads instead of 16/32. That extra cache should hold up really well in CPU-limited games and high-refresh builds.

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.

Ryzen 9 9900X3D Benchmark Check

Ryzen 9 9955HX Benchmark Check

Path of Exile 2

Preset	Ryzen 9 9900X3D	Ryzen 9 9955HX
1080p
low	281 FPS	284 FPS
medium	257 FPS	261 FPS
high	220 FPS	214 FPS
ultra	191 FPS	180 FPS
1440p
low	265 FPS	260 FPS
medium	218 FPS	217 FPS
high	173 FPS	167 FPS
ultra	155 FPS	147 FPS
4K
low	183 FPS	181 FPS
medium	150 FPS	151 FPS
high	113 FPS	115 FPS
ultra	100 FPS	102 FPS

Open Ryzen 9 9900X3D Open Ryzen 9 9955HX

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Ryzen 9 9900X3D	Ryzen 9 9955HX
1080p
low	824 FPS	666 FPS
medium	670 FPS	577 FPS
high	497 FPS	433 FPS
ultra	410 FPS	369 FPS
1440p
low	662 FPS	564 FPS
medium	562 FPS	503 FPS
high	433 FPS	389 FPS
ultra	335 FPS	305 FPS
4K
low	369 FPS	318 FPS
medium	317 FPS	288 FPS
high	278 FPS	253 FPS
ultra	233 FPS	214 FPS

Open Ryzen 9 9900X3D Open Ryzen 9 9955HX

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Ryzen 9 9900X3D	Ryzen 9 9955HX
1080p
low	890 FPS	848 FPS
medium	722 FPS	678 FPS
high	649 FPS	600 FPS
ultra	559 FPS	515 FPS
1440p
low	716 FPS	678 FPS
medium	582 FPS	542 FPS
high	511 FPS	469 FPS
ultra	434 FPS	397 FPS
4K
low	510 FPS	482 FPS
medium	420 FPS	399 FPS
high	377 FPS	359 FPS
ultra	316 FPS	301 FPS

Open Ryzen 9 9900X3D Open Ryzen 9 9955HX

League of Legends

League of Legends

Valorant

Preset	Ryzen 9 9900X3D	Ryzen 9 9955HX
1080p
low	1116 FPS	1071 FPS
medium	1001 FPS	966 FPS
high	878 FPS	843 FPS
ultra	792 FPS	759 FPS
1440p
low	872 FPS	840 FPS
medium	766 FPS	746 FPS
high	673 FPS	651 FPS
ultra	584 FPS	564 FPS
4K
low	637 FPS	618 FPS
medium	566 FPS	553 FPS
high	503 FPS	487 FPS
ultra	435 FPS	420 FPS

Open Ryzen 9 9900X3D Open Ryzen 9 9955HX

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Ryzen 9 9900X3D and Ryzen 9 9955HX

Ryzen 9 9900X3D

The Ryzen 9 9900X3D is manufactured by AMD. It was released in 6 January 2025 (less than a year ago). It is based on the Granite Ridge (2024−2025) architecture. It features 12 cores and 24 threads. Base frequency is 4.4 GHz, with boost up to 5.5 GHz. L3 cache: 128 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: AM5. Thermal design power (TDP): 120 Watt. Memory support: DDR5. Passmark benchmark score: 56,301 points. Launch price was $599.

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.

⚡

Processing Power

The Ryzen 9 9900X3D packs 12 cores / 24 threads, while the Ryzen 9 9955HX offers 16 cores / 32 threads — the Ryzen 9 9955HX has 4 more cores. Boost clocks reach 5.5 GHz on the Ryzen 9 9900X3D versus 5.4 GHz on the Ryzen 9 9955HX — a 1.8% clock advantage for the Ryzen 9 9900X3D (base: 4.4 GHz vs 2.5 GHz). The Ryzen 9 9900X3D uses the Granite Ridge (2024−2025) architecture (4 nm), while the Ryzen 9 9955HX uses Fire Range-HX (Zen 5) (2025) (4 nm). In PassMark, the Ryzen 9 9900X3D scores 56,301 against the Ryzen 9 9955HX's 55,711 — a 1.1% lead for the Ryzen 9 9900X3D. Geekbench 6 single-core — the metric most relevant to gaming — records 3,400 vs 3,219, a 5.5% lead for the Ryzen 9 9900X3D that directly translates to higher frame rates. Multi-core Geekbench: 26,000 vs 19,563 (28.3% advantage for the Ryzen 9 9900X3D). L3 cache: 128 MB (total) on the Ryzen 9 9900X3D vs 64 MB (total) on the Ryzen 9 9955HX.

Feature	Ryzen 9 9900X3D	Ryzen 9 9955HX
Cores / Threads	12 / 24	16 / 32+33%
Boost Clock	5.5 GHz+2%	5.4 GHz
Base Clock	4.4 GHz+76%	2.5 GHz
L3 Cache	128 MB (total)+100%	64 MB (total)
L2 Cache	1 MB (per core)	1 MB (per core)
Process	4 nm	4 nm
Architecture	Granite Ridge (2024−2025)	Fire Range-HX (Zen 5) (2025)
PassMark	56,301+1%	55,711
Cinebench R23 Multi	—	38,010
Geekbench 6 Single	3,400+6%	3,219
Geekbench 6 Multi	26,000+33%	19,563

🧠

Memory & Platform

The Ryzen 9 9900X3D uses the AM5 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 DDR5-5600 memory speed. The Ryzen 9 9900X3D supports up to 192 GB of RAM compared to 96 GB — 66.7% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 24 (Ryzen 9 9900X3D) vs 28 (Ryzen 9 9955HX) — the Ryzen 9 9955HX offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: X670,X670E,X870,X870E (Ryzen 9 9900X3D) and AMD FL1 (Ryzen 9 9955HX).

Feature	Ryzen 9 9900X3D	Ryzen 9 9955HX
Socket	AM5	FL1
PCIe Generation	PCIe 5.0	PCIe 5.0
Max RAM Speed	DDR5-5600	DDR5-5600
Max RAM Capacity	192 GB+100%	96 GB
RAM Channels	2	2
ECC Support	Yes	Yes
PCIe Lanes	24	28+17%

🔧

Advanced Features

Both processors feature an unlocked multiplier for overclocking. Both support AVX-512 instructions, benefiting scientific computing, AI inference, and encryption workloads. Virtualization support: AMD-V (Ryzen 9 9900X3D) vs true (Ryzen 9 9955HX). Both include integrated graphics — AMD Radeon Graphics (2 Cores) (Ryzen 9 9900X3D) and Radeon 610M (Ryzen 9 9955HX) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Ryzen 9 9900X3D targets High End Gaming/Creation. Direct competitor: Ryzen 9 9900X3D rivals Core Ultra 9 285K; Ryzen 9 9955HX rivals Core Ultra 9 275HX.

Feature	Ryzen 9 9900X3D	Ryzen 9 9955HX
Integrated GPU	Yes	Yes
IGPU Model	AMD Radeon Graphics (2 Cores)	Radeon 610M
Unlocked	Yes	Yes
AVX-512	Yes	Yes
Virtualization	AMD-V	true
Target Use	High End Gaming/Creation	—