EPYC 4545P vs Ryzen 9 9900X

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 4545P vs Ryzen 9 9900X 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 4545P vs Ryzen 9 9900X: Pros, Cons & Final Verdict

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

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

❌Worse for gaming: lower average FPS than Ryzen 9 9900X across 50 shared CPU benchmark tests.
❌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

✅Better for gaming: +6.1% higher average FPS across 50 shared CPU benchmark tests.
✅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.

Quick Answers

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

Not really, because they are built for different jobs. EPYC 4545P makes more sense for workstation-style multi-core throughput, while Ryzen 9 9900X is the more practical desktop choice for gaming, platform cost, and everyday use.

Which one is better for gaming?

If gaming is the priority, Ryzen 9 9900X is the better pick. According to our tests, it delivers 6.1% more average FPS across 50 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 stronger 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 better buy right now. Ryzen 9 9900X comes in $50 cheaper on MSRP at $499 MSRP versus $549 MSRP, and it still gives you a 6.1% average FPS lead across 50 shared CPU game tests in our data. It is also 10.6% better value on MSRP (109.3 vs 98.8 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

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

EPYC 4545P vs Ryzen 9 9900X Technical Specifications

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

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. Both support up to 5600 memory speed. The Ryzen 9 9900X supports up to 256 GB of RAM compared to 192 GB — 33.3% 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	DDR5-5600
Max RAM Capacity	192 GB	256 GB+33%
RAM Channels	2	2
ECC Support	Yes	Yes
PCIe Lanes	28+17%	24

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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. 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

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Value Analysis

At launch, the EPYC 4545P was priced at $549, while the Ryzen 9 9900X came in at $499. On launch pricing ($549 vs $499), Ryzen 9 9900X was $50 cheaper. In terms of value on MSRP (PassMark points per dollar), the EPYC 4545P delivers 98.8 pts/$ vs 109.3 pts/$ for the Ryzen 9 9900X — making the Ryzen 9 9900X the 10% better value option.

Feature	EPYC 4545P	Ryzen 9 9900X
MSRP	$549	$499-9%
Performance per Dollar	98.8	109.3+11%
Release Date	2025	2024

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