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.

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.

EPYC 4584PX

2024

Ryzen 9 9955HX3D

2025

Why buy it

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

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

❌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.

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 in a simple one-size-fits-all way. EPYC 4584PX makes more sense for workstation-style multi-core throughput, while Ryzen 9 9955HX3D is the better mainstream desktop choice for gaming, platform cost, and day-to-day practicality.

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

For streaming, content creation, and heavier multitasking, Ryzen 9 9955HX3D is the better 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 smarter buy today. Ryzen 9 9955HX3D is $768 cheaper on MSRP at $749 MSRP versus $1,517 MSRP, and it gives you 2.3% better PassMark. The trade-off is that EPYC 4584PX is still the better pure gaming CPU with a 13.9% average FPS lead across 50 shared CPU game tests in our data. It is also 107.3% better value on MSRP (82.2 vs 39.7 PassMark/$), so 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 9955HX3D is the more future-proof choice 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 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.

EPYC 4584PX Benchmark Check

Ryzen 9 9955HX3D Benchmark Check

Path of Exile 2

Preset	EPYC 4584PX	Ryzen 9 9955HX3D
1080p
low	290 FPS	287 FPS
medium	264 FPS	265 FPS
high	219 FPS	217 FPS
ultra	186 FPS	183 FPS
1440p
low	274 FPS	264 FPS
medium	227 FPS	221 FPS
high	176 FPS	170 FPS
ultra	156 FPS	150 FPS
4K
low	189 FPS	183 FPS
medium	155 FPS	153 FPS
high	119 FPS	116 FPS
ultra	106 FPS	103 FPS

Open EPYC 4584PX Open Ryzen 9 9955HX3D

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	EPYC 4584PX	Ryzen 9 9955HX3D
1080p
low	701 FPS	698 FPS
medium	599 FPS	601 FPS
high	444 FPS	448 FPS
ultra	375 FPS	376 FPS
1440p
low	574 FPS	579 FPS
medium	511 FPS	517 FPS
high	394 FPS	398 FPS
ultra	312 FPS	311 FPS
4K
low	323 FPS	325 FPS
medium	291 FPS	294 FPS
high	256 FPS	258 FPS
ultra	218 FPS	218 FPS

Open EPYC 4584PX Open Ryzen 9 9955HX3D

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	EPYC 4584PX	Ryzen 9 9955HX3D
1080p
low	1025 FPS	851 FPS
medium	1166 FPS	696 FPS
high	1102 FPS	627 FPS
ultra	875 FPS	539 FPS
1440p
low	972 FPS	680 FPS
medium	879 FPS	557 FPS
high	806 FPS	490 FPS
ultra	656 FPS	416 FPS
4K
low	597 FPS	484 FPS
medium	519 FPS	401 FPS
high	466 FPS	361 FPS
ultra	394 FPS	302 FPS

Open EPYC 4584PX Open Ryzen 9 9955HX3D

League of Legends

League of Legends

Valorant

Preset	EPYC 4584PX	Ryzen 9 9955HX3D
1080p
low	1303 FPS	1080 FPS
medium	1015 FPS	976 FPS
high	993 FPS	854 FPS
ultra	865 FPS	768 FPS
1440p
low	1035 FPS	853 FPS
medium	897 FPS	753 FPS
high	772 FPS	660 FPS
ultra	647 FPS	571 FPS
4K
low	759 FPS	622 FPS
medium	662 FPS	557 FPS
high	577 FPS	494 FPS
ultra	437 FPS	426 FPS

Open EPYC 4584PX Open Ryzen 9 9955HX3D

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of EPYC 4584PX and Ryzen 9 9955HX3D

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 7.4% faster memory, which can translate to measurable gains in memory-sensitive workloads. The EPYC 4584PX supports up to 256 of RAM compared to 96 — 90.9% 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

🔧

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

💰

Value Analysis

The EPYC 4584PX launched at $1517 MSRP, while the Ryzen 9 9955HX3D debuted at $749. On MSRP ($1517 vs $749), the Ryzen 9 9955HX3D is $768 cheaper. In terms of value on MSRP (PassMark points per dollar), the EPYC 4584PX delivers 39.7 pts/$ vs 82.2 pts/$ for the Ryzen 9 9955HX3D — making the Ryzen 9 9955HX3D the 69.8% better value option.