EPYC 4584PX vs Ryzen 9 9955HX3D

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.

EPYC 4584PX vs Ryzen 9 9955HX3D 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.

EPYC 4584PX vs Ryzen 9 9955HX3D: Pros, Cons & Final Verdict

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

EPYC 4584PX

2024

Why buy it

✅Better for gaming: +13.9% higher average FPS across 50 shared CPU benchmark tests.

Trade-offs

❌Lower PassMark (60,169 vs 61,578).
❌Lower PassMark per dollar, at 39.7 vs 82.2 PassMark/$ ($1,517 MSRP vs $749 MSRP).
❌118.2% higher power demand at 120W vs 55W.

Ryzen 9 9955HX3D

2025

Why buy it

✅+2.3% higher PassMark.
✅Costs $768 less on MSRP ($749 MSRP vs $1,517 MSRP).
✅Delivers 107.3% more PassMark for each dollar spent, at 82.2 vs 39.7 PassMark/$ ($749 MSRP vs $1,517 MSRP).
✅Draws 55W instead of 120W, a 65W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than EPYC 4584PX across 50 shared CPU benchmark tests.

Quick Answers

So, is Ryzen 9 9955HX3D better than EPYC 4584PX?

Not really, because they are built for different jobs. EPYC 4584PX makes more sense for workstation-style multi-core throughput, while Ryzen 9 9955HX3D is the more practical desktop choice for gaming, platform cost, and everyday use.

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

For streaming, content creation, and heavier multitasking, Ryzen 9 9955HX3D is the stronger fit. You are getting 2.3% better PassMark, backed by 16 cores and 32 threads.

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

Ryzen 9 9955HX3D is the better buy right now. Ryzen 9 9955HX3D comes in $768 cheaper on MSRP at $749 MSRP versus $1,517 MSRP, and it still gives you 2.3% better PassMark. The compromise is that EPYC 4584PX is still the better pure gaming CPU with a 13.9% average FPS lead across 50 shared CPU game tests in our data. It is also 107.3% better value on MSRP (82.2 vs 39.7 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Ryzen 9 9955HX3D makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2025 vs 2024) and more multi-core headroom with 16 cores / 32 threads instead of 16/32. That extra cache should keep paying off in CPU-limited games and high-refresh builds.

EPYC 4584PX vs Ryzen 9 9955HX3D Technical Specifications

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

EPYC 4584PX

The EPYC 4584PX is manufactured by AMD. It was released in 21 May 2024 (1 year ago). It is based on the Raphael (2023−2025) architecture. It features 16 cores and 32 threads. Base frequency is 4.2 GHz, with boost up to 5.7 GHz. L3 cache: 128 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. Passmark benchmark score: 60,169 points. Launch price was $699.

Ryzen 9 9955HX3D

The Ryzen 9 9955HX3D 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: 128 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: 61,578 points. Launch price was $700.

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Processing Power

Both the EPYC 4584PX and Ryzen 9 9955HX3D share an identical 16-core/32-thread configuration. Boost clocks reach 5.7 GHz on the EPYC 4584PX versus 5.4 GHz on the Ryzen 9 9955HX3D — a 5.4% clock advantage for the EPYC 4584PX (base: 4.2 GHz vs 2.5 GHz). The EPYC 4584PX uses the Raphael (2023−2025) architecture (5 nm), while the Ryzen 9 9955HX3D uses Fire Range-HX (Zen 5) (2025) (4 nm). In PassMark, the EPYC 4584PX scores 60,169 against the Ryzen 9 9955HX3D's 61,578 — a 2.3% lead for the Ryzen 9 9955HX3D. Both processors carry 128 MB (total) of L3 cache.

Feature	EPYC 4584PX	Ryzen 9 9955HX3D
Cores / Threads	16 / 32	16 / 32
Boost Clock	5.7 GHz+6%	5.4 GHz
Base Clock	4.2 GHz+68%	2.5 GHz
L3 Cache	128 MB (total)	128 MB (total)
L2 Cache	1 MB (per core)	1 MB (per core)
Process	5 nm	4 nm-20%
Architecture	Raphael (2023−2025)	Fire Range-HX (Zen 5) (2025)
PassMark	60,169	61,578+2%

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Memory & Platform

The EPYC 4584PX uses the AM5 socket (PCIe 4.0), while the Ryzen 9 9955HX3D uses FL1 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 5200 on the EPYC 4584PX versus 5600 on the Ryzen 9 9955HX3D — the Ryzen 9 9955HX3D supports 7.7% faster memory, which can translate to measurable gains in memory-sensitive workloads. The EPYC 4584PX supports up to 256 of RAM compared to 96 — 166.7% more capacity for professional workloads. Both feature 2-channel memory with ECC support. Both provide 28 PCIe lanes. Chipset compatibility: AM5 (EPYC 4584PX) and FL1 (Ryzen 9 9955HX3D).

Feature	EPYC 4584PX	Ryzen 9 9955HX3D
Socket	AM5	FL1
PCIe Generation	PCIe 4.0	PCIe 5.0+25%
Max RAM Speed	5200	5600+8%
Max RAM Capacity	256+167%	96
RAM Channels	2	2
ECC Support	Yes	Yes
PCIe Lanes	28	28

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Advanced Features

Both processors feature an unlocked multiplier for overclocking. Both support AVX-512 instructions, benefiting scientific computing, AI inference, and encryption workloads. Both support VT-x, VT-d, AMD-V virtualization. Both include integrated graphics — AMD Radeon Graphics (EPYC 4584PX) and AMD Radeon 610M (Ryzen 9 9955HX3D) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Direct competitor: EPYC 4584PX rivals Ryzen 9 7950X; Ryzen 9 9955HX3D rivals Core Ultra 9 185H.

Feature	EPYC 4584PX	Ryzen 9 9955HX3D
Integrated GPU	Yes	Yes
IGPU Model	AMD Radeon Graphics	AMD Radeon 610M
Unlocked	Yes	Yes
AVX-512	Yes	Yes
Virtualization	VT-x, VT-d, AMD-V	VT-x, VT-d, AMD-V

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Value Analysis

At launch, the EPYC 4584PX was priced at $1517, while the Ryzen 9 9955HX3D came in at $749. On launch pricing ($1517 vs $749), Ryzen 9 9955HX3D was $768 cheaper. In terms of value on MSRP (PassMark points per dollar), the EPYC 4584PX delivers 39.7 pts/$ vs 82.2 pts/$ for the Ryzen 9 9955HX3D — making the Ryzen 9 9955HX3D the 69.8% better value option.

Feature	EPYC 4584PX	Ryzen 9 9955HX3D
MSRP	$1517	$749-51%
Performance per Dollar	39.7	82.2+107%
Release Date	2024	2025

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