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

✅+39.3% higher PassMark.
✅Better for workstations and heavier parallel workloads: 16 cores / 32 threads, plus 28 PCIe lanes vs 24.
✅Delivers 39.3% more PassMark for each dollar spent, at 98.8 vs 71.0 PassMark/$ ($549 MSRP vs $549 MSRP).
✅Draws 65W instead of 105W, a 40W reduction.
✅Newer platform on AM5 with DDR5 support instead of AM4 and DDR4.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 5900X across 4 shared CPU benchmark tests.

Ryzen 9 5900X

2020

Why buy it

✅Better for gaming: +5.3% higher average FPS across 4 shared CPU benchmark tests.

Trade-offs

❌Lower PassMark (38,955 vs 54,255).
❌Less compelling for workstation-style loads than EPYC 4545P, which brings 16 cores / 32 threads and 28 PCIe lanes.
❌Lower PassMark per dollar, at 71.0 vs 98.8 PassMark/$ ($549 MSRP vs $549 MSRP).
❌61.5% higher power demand at 105W vs 65W.
❌Older platform position on AM4 with DDR4, while EPYC 4545P moves to AM5 and DDR5.

EPYC 4545P

2025

Ryzen 9 5900X

2020

Why buy it

✅+39.3% higher PassMark.
✅Better for workstations and heavier parallel workloads: 16 cores / 32 threads, plus 28 PCIe lanes vs 24.
✅Delivers 39.3% more PassMark for each dollar spent, at 98.8 vs 71.0 PassMark/$ ($549 MSRP vs $549 MSRP).
✅Draws 65W instead of 105W, a 40W reduction.
✅Newer platform on AM5 with DDR5 support instead of AM4 and DDR4.

Why buy it

✅Better for gaming: +5.3% higher average FPS across 4 shared CPU benchmark tests.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 5900X across 4 shared CPU benchmark tests.

Trade-offs

❌Lower PassMark (38,955 vs 54,255).
❌Less compelling for workstation-style loads than EPYC 4545P, which brings 16 cores / 32 threads and 28 PCIe lanes.
❌Lower PassMark per dollar, at 71.0 vs 98.8 PassMark/$ ($549 MSRP vs $549 MSRP).
❌61.5% higher power demand at 105W vs 65W.
❌Older platform position on AM4 with DDR4, while EPYC 4545P moves to AM5 and DDR5.

Quick Answers

So, is EPYC 4545P better than Ryzen 9 5900X?

Not in a simple one-size-fits-all way. EPYC 4545P makes more sense for workstation-style multi-core throughput, while Ryzen 9 5900X 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, EPYC 4545P is the better fit. You are getting 39.3% better PassMark, backed by 16 cores and 32 threads.

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

EPYC 4545P is the smarter buy today. EPYC 4545P is in basically the same MSRP band at $549 MSRP versus $549 MSRP, and it gives you 39.3% better PassMark. The trade-off is that Ryzen 9 5900X is still the better pure gaming CPU with a 5.3% average FPS lead across 4 shared CPU game tests in our data. It is also 39.3% better value on MSRP (98.8 vs 71.0 PassMark/$), 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?

EPYC 4545P is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2025 vs 2020), a healthier platform with AM5 and DDR5 instead of AM4, more multi-core headroom with 16 cores / 32 threads instead of 12/24, and AVX-512 support for heavier modern compute workloads. That should give you a better long-term upgrade path for motherboard, RAM, and future CPU swaps.

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 5900X Benchmark Check

Path of Exile 2

Preset	EPYC 4545P	Ryzen 9 5900X
1080p
low	286 FPS	323 FPS
medium	262 FPS	291 FPS
high	215 FPS	243 FPS
ultra	181 FPS	193 FPS
1440p
low	262 FPS	307 FPS
medium	218 FPS	248 FPS
high	167 FPS	192 FPS
ultra	148 FPS	157 FPS
4K
low	182 FPS	193 FPS
medium	151 FPS	156 FPS
high	115 FPS	115 FPS
ultra	102 FPS	103 FPS

Open EPYC 4545P Open Ryzen 9 5900X

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	EPYC 4545P	Ryzen 9 5900X
1080p
low	674 FPS	772 FPS
medium	580 FPS	647 FPS
high	434 FPS	508 FPS
ultra	375 FPS	450 FPS
1440p
low	567 FPS	619 FPS
medium	506 FPS	536 FPS
high	392 FPS	443 FPS
ultra	312 FPS	364 FPS
4K
low	320 FPS	365 FPS
medium	289 FPS	318 FPS
high	255 FPS	289 FPS
ultra	219 FPS	255 FPS

Open EPYC 4545P Open Ryzen 9 5900X

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	EPYC 4545P	Ryzen 9 5900X
1080p
low	850 FPS	832 FPS
medium	679 FPS	645 FPS
high	601 FPS	558 FPS
ultra	515 FPS	459 FPS
1440p
low	679 FPS	721 FPS
medium	543 FPS	565 FPS
high	469 FPS	488 FPS
ultra	398 FPS	407 FPS
4K
low	484 FPS	511 FPS
medium	401 FPS	421 FPS
high	360 FPS	374 FPS
ultra	302 FPS	308 FPS

Open EPYC 4545P Open Ryzen 9 5900X

League of Legends

League of Legends

Valorant

Preset	EPYC 4545P	Ryzen 9 5900X
1080p
low	1072 FPS	974 FPS
medium	966 FPS	974 FPS
high	843 FPS	934 FPS
ultra	760 FPS	826 FPS
1440p
low	842 FPS	959 FPS
medium	747 FPS	843 FPS
high	652 FPS	726 FPS
ultra	566 FPS	617 FPS
4K
low	619 FPS	694 FPS
medium	553 FPS	621 FPS
high	487 FPS	541 FPS
ultra	421 FPS	437 FPS

Open EPYC 4545P Open Ryzen 9 5900X

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of EPYC 4545P and Ryzen 9 5900X

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 5900X

The Ryzen 9 5900X is manufactured by AMD. It was released in 5 November 2020 (5 years ago). It is based on the Vermeer (Zen3) (2020−2022) architecture. It features 12 cores and 24 threads. Base frequency is 3.7 GHz, with boost up to 4.8 GHz. L3 cache: 64 MB. L2 cache: 512K (per core). Built on 7 nm, 12 nm process technology. Socket: AM4. Thermal design power (TDP): 105 Watt. Memory support: DDR4-3200. Passmark benchmark score: 38,955 points. Launch price was $549.

⚡

Processing Power

The EPYC 4545P packs 16 cores / 32 threads, while the Ryzen 9 5900X offers 12 cores / 24 threads — the EPYC 4545P has 4 more cores. Boost clocks reach 5.4 GHz on the EPYC 4545P versus 4.8 GHz on the Ryzen 9 5900X — a 11.8% clock advantage for the EPYC 4545P (base: 3 GHz vs 3.7 GHz). The EPYC 4545P uses the Grado (2025) architecture (4 nm), while the Ryzen 9 5900X uses Vermeer (Zen3) (2020−2022) (7 nm, 12 nm). In PassMark, the EPYC 4545P scores 54,255 against the Ryzen 9 5900X's 38,955 — a 32.8% lead for the EPYC 4545P. L3 cache: 64 MB (total) on the EPYC 4545P vs 64 MB on the Ryzen 9 5900X.

Feature	EPYC 4545P	Ryzen 9 5900X
Cores / Threads	16 / 32+33%	12 / 24
Boost Clock	5.4 GHz+13%	4.8 GHz
Base Clock	3 GHz	3.7 GHz+23%
L3 Cache	64 MB (total)	64 MB
L2 Cache	1 MB (per core)+100%	512K (per core)
Process	4 nm-43%	7 nm, 12 nm
Architecture	Grado (2025)	Vermeer (Zen3) (2020−2022)
PassMark	54,255+39%	38,955
Cinebench R23 Multi	—	21,000
Geekbench 6 Single	—	2,174
Geekbench 6 Multi	—	11,888

🧠

Memory & Platform

The EPYC 4545P uses the AM5 socket (PCIe 4.0), while the Ryzen 9 5900X uses AM4 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 5600 on the EPYC 4545P versus DDR4-3200 on the Ryzen 9 5900X — the EPYC 4545P supports 199.7% faster memory, which can translate to measurable gains in memory-sensitive workloads. The EPYC 4545P supports up to 192 of RAM compared to 128 GB — 40% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 28 (EPYC 4545P) vs 24 (Ryzen 9 5900X) — the EPYC 4545P offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: AM5 (EPYC 4545P) and A320,B350,X370,B450,X470,B550,X570 (Ryzen 9 5900X).

Feature	EPYC 4545P	Ryzen 9 5900X
Socket	AM5	AM4
PCIe Generation	PCIe 4.0	PCIe 4.0
Max RAM Speed	5600+139900%	DDR4-3200
Max RAM Capacity	192	128 GB+69904967%
RAM Channels	2	2
ECC Support	Yes	Yes
PCIe Lanes	28+17%	24

🔧

Advanced Features

Both processors feature an unlocked multiplier for overclocking. Only the EPYC 4545P supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: VT-x, VT-d, AMD-V (EPYC 4545P) vs AMD-V (Ryzen 9 5900X). The EPYC 4545P includes integrated graphics (AMD Radeon Graphics), while the Ryzen 9 5900X requires a dedicated GPU. Primary use case: Ryzen 9 5900X targets Workstation. Direct competitor: EPYC 4545P rivals Ryzen 9 7900X; Ryzen 9 5900X rivals Core i9-12900K.

Feature	EPYC 4545P	Ryzen 9 5900X
Integrated GPU	Yes	No
IGPU Model	AMD Radeon Graphics	—
Unlocked	Yes	Yes
AVX-512	Yes	No
Virtualization	VT-x, VT-d, AMD-V	AMD-V
Target Use	—	Workstation

💰

Value Analysis

The EPYC 4545P launched at $549 MSRP, while the Ryzen 9 5900X debuted at $549. On MSRP ($549 vs $549), the Ryzen 9 5900X is $0 cheaper. In terms of value on MSRP (PassMark points per dollar), the EPYC 4545P delivers 98.8 pts/$ vs 71.0 pts/$ for the Ryzen 9 5900X — making the EPYC 4545P the 32.8% better value option.