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 9455P

2024

Why buy it

✅Better for gaming: +4.6% higher average FPS across 50 shared CPU benchmark tests.
✅Costs $4,268 less on MSRP ($4,819 MSRP vs $9,087 MSRP).
✅Delivers 111.3% more PassMark for each dollar spent, at 24.3 vs 11.5 PassMark/$ ($4,819 MSRP vs $9,087 MSRP).
✅Draws 300W instead of 360W, a 60W reduction.

Trade-offs

❌Fewer obvious downsides in this matchup outside of normal market pricing swings.

EPYC 9554

2022

Why buy it

Trade-offs

❌Worse for gaming: lower average FPS than EPYC 9455P across 50 shared CPU benchmark tests.
❌Lower PassMark (104,336 vs 116,926).
❌Lower PassMark per dollar, at 11.5 vs 24.3 PassMark/$ ($9,087 MSRP vs $4,819 MSRP).
❌20% higher power demand at 360W vs 300W.

EPYC 9455P

2024

EPYC 9554

2022

Why buy it

✅Better for gaming: +4.6% higher average FPS across 50 shared CPU benchmark tests.
✅Costs $4,268 less on MSRP ($4,819 MSRP vs $9,087 MSRP).
✅Delivers 111.3% more PassMark for each dollar spent, at 24.3 vs 11.5 PassMark/$ ($4,819 MSRP vs $9,087 MSRP).
✅Draws 300W instead of 360W, a 60W reduction.

Why buy it

Trade-offs

❌Fewer obvious downsides in this matchup outside of normal market pricing swings.

Trade-offs

❌Worse for gaming: lower average FPS than EPYC 9455P across 50 shared CPU benchmark tests.
❌Lower PassMark (104,336 vs 116,926).
❌Lower PassMark per dollar, at 11.5 vs 24.3 PassMark/$ ($9,087 MSRP vs $4,819 MSRP).
❌20% higher power demand at 360W vs 300W.

Quick Answers

So, is EPYC 9455P better than EPYC 9554?

Yes. EPYC 9455P is the better overall CPU here. You are getting a 4.6% average FPS lead across 50 shared CPU game tests in our data, 12.1% better PassMark, and the stronger long-term platform, which makes it the stronger all-around choice.

Which one is better for gaming?

If gaming is the priority, EPYC 9455P is the better pick here. According to our tests, it delivers 4.6% 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, EPYC 9455P is the better fit. You are getting 12.1% better PassMark, backed by 48 cores and 96 threads.

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

EPYC 9455P is the smarter buy today. EPYC 9455P is $4,268 cheaper on MSRP at $4,819 MSRP versus $9,087 MSRP, and it gives you a 4.6% average FPS lead across 50 shared CPU game tests in our data. It is also 111.3% better value on MSRP (24.3 vs 11.5 PassMark/$), 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 9455P is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2024 vs 2022) and more multi-core headroom with 48 cores / 96 threads instead of 64/128. 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 9455P Benchmark Check

EPYC 9554 Benchmark Check

Path of Exile 2

Preset	EPYC 9455P	EPYC 9554
1080p
low	171 FPS	171 FPS
medium	142 FPS	142 FPS
high	122 FPS	122 FPS
ultra	99 FPS	96 FPS
1440p
low	150 FPS	149 FPS
medium	121 FPS	120 FPS
high	99 FPS	97 FPS
ultra	83 FPS	77 FPS
4K
low	84 FPS	70 FPS
medium	73 FPS	60 FPS
high	57 FPS	47 FPS
ultra	47 FPS	39 FPS

Open EPYC 9455P Open EPYC 9554

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	EPYC 9455P	EPYC 9554
1080p
low	655 FPS	533 FPS
medium	566 FPS	465 FPS
high	459 FPS	373 FPS
ultra	397 FPS	303 FPS
1440p
low	546 FPS	438 FPS
medium	483 FPS	392 FPS
high	404 FPS	323 FPS
ultra	328 FPS	255 FPS
4K
low	331 FPS	270 FPS
medium	295 FPS	246 FPS
high	268 FPS	216 FPS
ultra	236 FPS	179 FPS

Open EPYC 9455P Open EPYC 9554

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	EPYC 9455P	EPYC 9554
1080p
low	747 FPS	673 FPS
medium	634 FPS	562 FPS
high	590 FPS	523 FPS
ultra	519 FPS	455 FPS
1440p
low	561 FPS	511 FPS
medium	474 FPS	426 FPS
high	434 FPS	390 FPS
ultra	376 FPS	337 FPS
4K
low	405 FPS	377 FPS
medium	326 FPS	295 FPS
high	288 FPS	263 FPS
ultra	229 FPS	211 FPS

Open EPYC 9455P Open EPYC 9554

League of Legends

League of Legends

Valorant

Preset	EPYC 9455P	EPYC 9554
1080p
low	993 FPS	905 FPS
medium	892 FPS	823 FPS
high	767 FPS	709 FPS
ultra	692 FPS	626 FPS
1440p
low	799 FPS	726 FPS
medium	696 FPS	633 FPS
high	594 FPS	541 FPS
ultra	525 FPS	463 FPS
4K
low	567 FPS	521 FPS
medium	503 FPS	465 FPS
high	441 FPS	408 FPS
ultra	387 FPS	351 FPS

Open EPYC 9455P Open EPYC 9554

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of EPYC 9455P and EPYC 9554

EPYC 9455P

The EPYC 9455P is manufactured by AMD. It was released in 10 October 2024 (1 year ago). It is based on the Turin (2024) architecture. It features 48 cores and 96 threads. Base frequency is 3.15 GHz, with boost up to 4.4 GHz. L3 cache: 256 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: SP5. Thermal design power (TDP): 300 Watt. Memory support: DDR5. Passmark benchmark score: 116,926 points. Launch price was $4,819.

EPYC 9554

The EPYC 9554 is manufactured by AMD. It was released in 10 November 2022 (3 years ago). It is based on the Genoa (2022−2023) architecture. It features 64 cores and 128 threads. Base frequency is 3.1 GHz, with boost up to 3.75 GHz. L3 cache: 256 MB (total). L2 cache: 1 MB (per core). Built on 5 nm, 6 nm process technology. Socket: SP5. Thermal design power (TDP): 360 Watt. Memory support: DDR5-4800. Passmark benchmark score: 104,336 points. Launch price was $9,087.

⚡

Processing Power

The EPYC 9455P packs 48 cores / 96 threads, while the EPYC 9554 offers 64 cores / 128 threads — the EPYC 9554 has 16 more cores. Boost clocks reach 4.4 GHz on the EPYC 9455P versus 3.75 GHz on the EPYC 9554 — a 16% clock advantage for the EPYC 9455P (base: 3.15 GHz vs 3.1 GHz). The EPYC 9455P uses the Turin (2024) architecture (4 nm), while the EPYC 9554 uses Genoa (2022−2023) (5 nm, 6 nm). In PassMark, the EPYC 9455P scores 116,926 against the EPYC 9554's 104,336 — a 11.4% lead for the EPYC 9455P. Both processors carry 256 MB (total) of L3 cache.

Feature	EPYC 9455P	EPYC 9554
Cores / Threads	48 / 96	64 / 128+33%
Boost Clock	4.4 GHz+17%	3.75 GHz
Base Clock	3.15 GHz+2%	3.1 GHz
L3 Cache	256 MB (total)	256 MB (total)
L2 Cache	1 MB (per core)	1 MB (per core)
Process	4 nm-20%	5 nm, 6 nm
Architecture	Turin (2024)	Genoa (2022−2023)
PassMark	116,926+12%	104,336
Geekbench 6 Single	1,962	—
Geekbench 6 Multi	1,898	—

🧠

Memory & Platform

Both processors use the SP5 socket with PCIe 5.0. Both support up to DDR5-6000 memory speed. The EPYC 9455P supports up to 9 TB of RAM compared to 6 TB — 40% more capacity for professional workloads. Both feature 12-channel memory with ECC support. Both provide 128 PCIe lanes. Chipset compatibility: SP5 (EPYC 9455P) and SP5 (EPYC 9554).

Feature	EPYC 9455P	EPYC 9554
Socket	SP5	SP5
PCIe Generation	PCIe 5.0	PCIe 5.0
Max RAM Speed	DDR5-6000	DDR5-4800
Max RAM Capacity	9 TB+50%	6 TB
RAM Channels	12	12
ECC Support	Yes	Yes
PCIe Lanes	128	128

🔧

Advanced Features

Both support AMD-V, SEV-SNP virtualization. Primary use case: EPYC 9455P targets Data Center / Single Socket, EPYC 9554 targets Data Center. Direct competitor: EPYC 9455P rivals Xeon 6766E; EPYC 9554 rivals Xeon 8468.

Feature	EPYC 9455P	EPYC 9554
Integrated GPU	No	No
Virtualization	AMD-V, SEV-SNP	AMD-V, SEV-SNP
Target Use	Data Center / Single Socket	Data Center

💰

Value Analysis

The EPYC 9455P launched at $4819 MSRP, while the EPYC 9554 debuted at $9087. On MSRP ($4819 vs $9087), the EPYC 9455P is $4268 cheaper. In terms of value on MSRP (PassMark points per dollar), the EPYC 9455P delivers 24.3 pts/$ vs 11.5 pts/$ for the EPYC 9554 — making the EPYC 9455P the 71.5% better value option.