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 4545P

2025

Why buy it

✅Better for workstations and heavier parallel workloads: 16 cores / 32 threads, plus 28 PCIe lanes vs 24.
✅Draws 65W instead of 120W, a 55W reduction.
✅16.7% more PCIe lanes (28 vs 24) for storage and expansion-heavy builds.

Trade-offs

❌Lower PassMark (54,255 vs 54,530).
❌Lower PassMark per dollar, at 98.8 vs 109.3 PassMark/$ ($549 MSRP vs $499 MSRP).

Ryzen 9 9900X

2024

Why buy it

✅Costs $50 less on MSRP ($499 MSRP vs $549 MSRP).
✅Delivers 10.6% more PassMark for each dollar spent, at 109.3 vs 98.8 PassMark/$ ($499 MSRP vs $549 MSRP).

Trade-offs

❌Less compelling for workstation-style loads than EPYC 4545P, which brings 16 cores / 32 threads and 28 PCIe lanes.
❌84.6% higher power demand at 120W vs 65W.

EPYC 4545P

2025

Ryzen 9 9900X

2024

Why buy it

✅Better for workstations and heavier parallel workloads: 16 cores / 32 threads, plus 28 PCIe lanes vs 24.
✅Draws 65W instead of 120W, a 55W reduction.
✅16.7% more PCIe lanes (28 vs 24) for storage and expansion-heavy builds.

Why buy it

✅Costs $50 less on MSRP ($499 MSRP vs $549 MSRP).
✅Delivers 10.6% more PassMark for each dollar spent, at 109.3 vs 98.8 PassMark/$ ($499 MSRP vs $549 MSRP).

Trade-offs

❌Lower PassMark (54,255 vs 54,530).
❌Lower PassMark per dollar, at 98.8 vs 109.3 PassMark/$ ($549 MSRP vs $499 MSRP).

Trade-offs

❌Less compelling for workstation-style loads than EPYC 4545P, which brings 16 cores / 32 threads and 28 PCIe lanes.
❌84.6% higher power demand at 120W vs 65W.

Quick Answers

So, is Ryzen 9 9900X better than EPYC 4545P?

Not in a simple one-size-fits-all way. EPYC 4545P makes more sense for workstation-style multi-core throughput, while Ryzen 9 9900X is the better mainstream desktop choice for gaming, platform cost, and day-to-day practicality.

Which one is better for gaming?

If gaming is the priority, Ryzen 9 9900X is the better pick here. According to our tests, it delivers 2.1% more average FPS across 2 shared CPU game tests.

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

For streaming, content creation, and heavier multitasking, Ryzen 9 9900X is the better fit. You are getting 0.5% better PassMark, backed by 12 cores and 24 threads.

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

Ryzen 9 9900X is the smarter buy today. Ryzen 9 9900X is $50 cheaper on MSRP at $499 MSRP versus $549 MSRP, and it gives you a 2.1% average FPS lead across 2 shared CPU game tests in our data. It is also 10.6% better value on MSRP (109.3 vs 98.8 PassMark/$), 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?

EPYC 4545P is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2025 vs 2024). That makes it the safer long-term pick.

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 4545P Benchmark Check

Ryzen 9 9900X Benchmark Check

Path of Exile 2

Preset	EPYC 4545P	Ryzen 9 9900X
1080p
low	286 FPS	287 FPS
medium	262 FPS	259 FPS
high	215 FPS	218 FPS
ultra	181 FPS	190 FPS
1440p
low	262 FPS	270 FPS
medium	218 FPS	218 FPS
high	167 FPS	170 FPS
ultra	148 FPS	152 FPS
4K
low	182 FPS	186 FPS
medium	151 FPS	151 FPS
high	115 FPS	112 FPS
ultra	102 FPS	100 FPS

Open EPYC 4545P Open Ryzen 9 9900X

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	EPYC 4545P	Ryzen 9 9900X
1080p
low	674 FPS	772 FPS
medium	580 FPS	625 FPS
high	434 FPS	467 FPS
ultra	375 FPS	393 FPS
1440p
low	567 FPS	635 FPS
medium	506 FPS	534 FPS
high	392 FPS	412 FPS
ultra	312 FPS	321 FPS
4K
low	320 FPS	356 FPS
medium	289 FPS	303 FPS
high	255 FPS	266 FPS
ultra	219 FPS	224 FPS

Open EPYC 4545P Open Ryzen 9 9900X

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	EPYC 4545P	Ryzen 9 9900X
1080p
low	850 FPS	899 FPS
medium	679 FPS	711 FPS
high	601 FPS	618 FPS
ultra	515 FPS	526 FPS
1440p
low	679 FPS	726 FPS
medium	543 FPS	577 FPS
high	469 FPS	492 FPS
ultra	398 FPS	418 FPS
4K
low	484 FPS	517 FPS
medium	401 FPS	432 FPS
high	360 FPS	388 FPS
ultra	302 FPS	322 FPS

Open EPYC 4545P Open Ryzen 9 9900X

League of Legends

League of Legends

Valorant

Preset	EPYC 4545P	Ryzen 9 9900X
1080p
low	1072 FPS	1126 FPS
medium	966 FPS	989 FPS
high	843 FPS	862 FPS
ultra	760 FPS	766 FPS
1440p
low	842 FPS	891 FPS
medium	747 FPS	774 FPS
high	652 FPS	677 FPS
ultra	566 FPS	580 FPS
4K
low	619 FPS	644 FPS
medium	553 FPS	569 FPS
high	487 FPS	502 FPS
ultra	421 FPS	433 FPS

Open EPYC 4545P Open Ryzen 9 9900X

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of EPYC 4545P and Ryzen 9 9900X

EPYC 4545P

The EPYC 4545P is manufactured by AMD. It was released in 13 May 2025 (less than a year ago). It is based on the Grado (2025) architecture. It features 16 cores and 32 threads. Base frequency is 3 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: AM5. Thermal design power (TDP): 65 Watt. Memory support: DDR5. Passmark benchmark score: 54,255 points. Launch price was $549.

Ryzen 9 9900X

The Ryzen 9 9900X is manufactured by AMD. It was released in 15 August 2024 (1 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 5.6 GHz. L3 cache: 64 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: 54,530 points. Launch price was $499.

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Processing Power

The EPYC 4545P packs 16 cores / 32 threads, while the Ryzen 9 9900X offers 12 cores / 24 threads — the EPYC 4545P has 4 more cores. Boost clocks reach 5.4 GHz on the EPYC 4545P versus 5.6 GHz on the Ryzen 9 9900X — a 3.6% clock advantage for the Ryzen 9 9900X (base: 3 GHz vs 4.4 GHz). The EPYC 4545P uses the Grado (2025) architecture (4 nm), while the Ryzen 9 9900X uses Granite Ridge (2024−2025) (4 nm). In PassMark, the EPYC 4545P scores 54,255 against the Ryzen 9 9900X's 54,530 — a 0.5% lead for the Ryzen 9 9900X. Both processors carry 64 MB (total) of L3 cache.

Feature	EPYC 4545P	Ryzen 9 9900X
Cores / Threads	16 / 32+33%	12 / 24
Boost Clock	5.4 GHz	5.6 GHz+4%
Base Clock	3 GHz	4.4 GHz+47%
L3 Cache	64 MB (total)	64 MB (total)
L2 Cache	1 MB (per core)	1 MB (per core)
Process	4 nm	4 nm
Architecture	Grado (2025)	Granite Ridge (2024−2025)
PassMark	54,255	54,530
Cinebench R23 Multi	—	33,003
Geekbench 6 Single	—	3,401
Geekbench 6 Multi	—	19,756

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Memory & Platform

Both processors use the AM5 socket with PCIe 4.0. Maximum memory speed reaches 5600 on the EPYC 4545P versus DDR5-5600 on the Ryzen 9 9900X — the EPYC 4545P supports 199.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Ryzen 9 9900X supports up to 256 GB of RAM compared to 192 — 28.6% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 28 (EPYC 4545P) vs 24 (Ryzen 9 9900X) — the EPYC 4545P offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: AM5 (EPYC 4545P) and A620,B650,X670,X870 (Ryzen 9 9900X).

Feature	EPYC 4545P	Ryzen 9 9900X
Socket	AM5	AM5
PCIe Generation	PCIe 4.0	PCIe 5.0+25%
Max RAM Speed	5600+111900%	DDR5-5600
Max RAM Capacity	192	256 GB+139810033%
RAM Channels	2	2
ECC Support	Yes	Yes
PCIe Lanes	28+17%	24

🔧

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: VT-x, VT-d, AMD-V (EPYC 4545P) vs AMD-V (Ryzen 9 9900X). Both include integrated graphics — AMD Radeon Graphics (EPYC 4545P) and Radeon 610M (Ryzen 9 9900X) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Direct competitor: EPYC 4545P rivals Ryzen 9 7900X.

Feature	EPYC 4545P	Ryzen 9 9900X
Integrated GPU	Yes	Yes
IGPU Model	AMD Radeon Graphics	Radeon 610M
Unlocked	Yes	Yes
AVX-512	Yes	Yes
Virtualization	VT-x, VT-d, AMD-V	AMD-V

💰

Value Analysis

The EPYC 4545P launched at $549 MSRP, while the Ryzen 9 9900X debuted at $499. On MSRP ($549 vs $499), the Ryzen 9 9900X is $50 cheaper. In terms of value on MSRP (PassMark points per dollar), the EPYC 4545P delivers 98.8 pts/$ vs 109.3 pts/$ for the Ryzen 9 9900X — making the Ryzen 9 9900X the 10% better value option.