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 9555P

2024

Why buy it

✅Better for gaming: +8.0% higher average FPS across 3 shared CPU benchmark tests.
✅Costs $5,001 less on MSRP ($7,983 MSRP vs $12,984 MSRP).
✅Delivers 32.4% more PassMark for each dollar spent, at 17.0 vs 12.8 PassMark/$ ($7,983 MSRP vs $12,984 MSRP).
✅Draws 360W instead of 500W, a 140W reduction.

Trade-offs

❌Smaller total L3 cache (256 MB vs 512 MB).

EPYC 9755

2024

Why buy it

✅+100% larger total L3 cache (512 MB vs 256 MB).

Trade-offs

❌Worse for gaming: lower average FPS than EPYC 9555P across 3 shared CPU benchmark tests.
❌Lower Geekbench multi-core (29,300 vs 29,406).
❌Lower PassMark per dollar, at 12.8 vs 17.0 PassMark/$ ($12,984 MSRP vs $7,983 MSRP).
❌38.9% higher power demand at 500W vs 360W.

EPYC 9555P

2024

EPYC 9755

2024

Why buy it

✅Better for gaming: +8.0% higher average FPS across 3 shared CPU benchmark tests.
✅Costs $5,001 less on MSRP ($7,983 MSRP vs $12,984 MSRP).
✅Delivers 32.4% more PassMark for each dollar spent, at 17.0 vs 12.8 PassMark/$ ($7,983 MSRP vs $12,984 MSRP).
✅Draws 360W instead of 500W, a 140W reduction.

Why buy it

✅+100% larger total L3 cache (512 MB vs 256 MB).

Trade-offs

❌Smaller total L3 cache (256 MB vs 512 MB).

Trade-offs

❌Worse for gaming: lower average FPS than EPYC 9555P across 3 shared CPU benchmark tests.
❌Lower Geekbench multi-core (29,300 vs 29,406).
❌Lower PassMark per dollar, at 12.8 vs 17.0 PassMark/$ ($12,984 MSRP vs $7,983 MSRP).
❌38.9% higher power demand at 500W vs 360W.

Quick Answers

So, is EPYC 9555P better than EPYC 9755?

Yes. EPYC 9555P is the better overall CPU here. You are getting a 8.0% average FPS lead across 3 shared CPU game tests in our data and 0.4% better Geekbench multi-core, which makes it the stronger all-around choice.

Which one is better for gaming?

If gaming is the priority, EPYC 9555P is the better pick here. According to our tests, it delivers 8.0% more average FPS across 3 shared CPU game tests.

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

For streaming, content creation, and heavier multitasking, EPYC 9555P is the better fit. You are getting 0.4% better Geekbench multi-core, backed by 64 cores and 128 threads.

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

EPYC 9555P is the smarter buy today. EPYC 9555P is $5,001 cheaper on MSRP at $7,983 MSRP versus $12,984 MSRP, and it gives you a 8.0% average FPS lead across 3 shared CPU game tests in our data. It is also 32.4% better value on MSRP (17.0 vs 12.8 PassMark/$), 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 9755 is the safer long-term CPU choice because it gives you more overall headroom and a better platform outlook.

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 9555P Benchmark Check

EPYC 9755 Benchmark Check

Path of Exile 2

Preset	EPYC 9555P	EPYC 9755
1080p
low	171 FPS	170 FPS
medium	142 FPS	141 FPS
high	122 FPS	120 FPS
ultra	99 FPS	95 FPS
1440p
low	150 FPS	148 FPS
medium	121 FPS	119 FPS
high	99 FPS	95 FPS
ultra	83 FPS	76 FPS
4K
low	84 FPS	69 FPS
medium	73 FPS	59 FPS
high	57 FPS	47 FPS
ultra	47 FPS	38 FPS

Open EPYC 9555P Open EPYC 9755

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	EPYC 9555P	EPYC 9755
1080p
low	655 FPS	581 FPS
medium	566 FPS	510 FPS
high	459 FPS	414 FPS
ultra	397 FPS	361 FPS
1440p
low	546 FPS	489 FPS
medium	483 FPS	437 FPS
high	404 FPS	365 FPS
ultra	328 FPS	302 FPS
4K
low	331 FPS	304 FPS
medium	295 FPS	275 FPS
high	268 FPS	247 FPS
ultra	236 FPS	221 FPS

Open EPYC 9555P Open EPYC 9755

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	EPYC 9555P	EPYC 9755
1080p
low	747 FPS	741 FPS
medium	634 FPS	632 FPS
high	590 FPS	574 FPS
ultra	519 FPS	505 FPS
1440p
low	561 FPS	558 FPS
medium	474 FPS	473 FPS
high	434 FPS	423 FPS
ultra	376 FPS	366 FPS
4K
low	405 FPS	403 FPS
medium	326 FPS	324 FPS
high	288 FPS	286 FPS
ultra	229 FPS	229 FPS

Open EPYC 9555P Open EPYC 9755

League of Legends

League of Legends

Valorant

Preset	EPYC 9555P	EPYC 9755
1080p
low	1005 FPS	915 FPS
medium	902 FPS	830 FPS
high	778 FPS	715 FPS
ultra	702 FPS	632 FPS
1440p
low	809 FPS	726 FPS
medium	704 FPS	633 FPS
high	603 FPS	542 FPS
ultra	533 FPS	469 FPS
4K
low	574 FPS	524 FPS
medium	510 FPS	468 FPS
high	447 FPS	411 FPS
ultra	392 FPS	352 FPS

Open EPYC 9555P Open EPYC 9755

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of EPYC 9555P and EPYC 9755

EPYC 9555P

The EPYC 9555P is manufactured by AMD. It was released in 10 October 2024 (1 year ago). It is based on the Turin (2024) architecture. It features 64 cores and 128 threads. Base frequency is 3.2 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): 360 Watt. Memory support: DDR5. Passmark benchmark score: 135,441 points. Launch price was $7,983.

EPYC 9755

The EPYC 9755 is manufactured by AMD. It was released in 10 October 2024 (1 year ago). It is based on the Turin (2024) architecture. It features 128 cores and 256 threads. Base frequency is 2.7 GHz, with boost up to 4.1 GHz. L3 cache: 512 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: SP5. Thermal design power (TDP): 500 Watt. Memory support: DDR5. Passmark benchmark score: 166,328 points. Launch price was $12,984.

⚡

Processing Power

The EPYC 9555P packs 64 cores / 128 threads, while the EPYC 9755 offers 128 cores / 256 threads — the EPYC 9755 has 64 more cores. Boost clocks reach 4.4 GHz on the EPYC 9555P versus 4.1 GHz on the EPYC 9755 — a 7.1% clock advantage for the EPYC 9555P (base: 3.2 GHz vs 2.7 GHz). Both are built on the Turin (2024) architecture using a 4 nm process. In PassMark, the EPYC 9555P scores 135,441 against the EPYC 9755's 166,328 — a 20.5% lead for the EPYC 9755. Geekbench 6 single-core — the metric most relevant to gaming — records 2,815 vs 2,800, a 0.5% lead for the EPYC 9555P that directly translates to higher frame rates. Multi-core Geekbench: 29,406 vs 29,300 (0.4% advantage for the EPYC 9555P). L3 cache: 256 MB (total) on the EPYC 9555P vs 512 MB (total) on the EPYC 9755.

Feature	EPYC 9555P	EPYC 9755
Cores / Threads	64 / 128	128 / 256+100%
Boost Clock	4.4 GHz+7%	4.1 GHz
Base Clock	3.2 GHz+19%	2.7 GHz
L3 Cache	256 MB (total)	512 MB (total)+100%
L2 Cache	1 MB (per core)	1 MB (per core)
Process	4 nm	4 nm
Architecture	Turin (2024)	Turin (2024)
PassMark	135,441	166,328+23%
Geekbench 6 Single	2,815	2,800
Geekbench 6 Multi	29,406	29,300

🧠

Memory & Platform

Both processors use the SP5 socket with PCIe 5.0. Both support up to DDR5-6000 memory speed. The EPYC 9755 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 9555P) and SP5 (EPYC 9755).

Feature	EPYC 9555P	EPYC 9755
Socket	SP5	SP5
PCIe Generation	PCIe 5.0	PCIe 5.0
Max RAM Speed	DDR5-6000	DDR5-6000
Max RAM Capacity	6 TB	9 TB+50%
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 9555P targets Data Center / Single Socket, EPYC 9755 targets Data Center / Cloud Computing. Direct competitor: EPYC 9555P rivals Xeon 6979P; EPYC 9755 rivals Xeon 6980P.

Feature	EPYC 9555P	EPYC 9755
Integrated GPU	No	No
Virtualization	AMD-V, SEV-SNP	AMD-V, SEV-SNP
Target Use	Data Center / Single Socket	Data Center / Cloud Computing

💰

Value Analysis

The EPYC 9555P launched at $7983 MSRP, while the EPYC 9755 debuted at $12984. On MSRP ($7983 vs $12984), the EPYC 9555P is $5001 cheaper. In terms of value on MSRP (PassMark points per dollar), the EPYC 9555P delivers 17.0 pts/$ vs 12.8 pts/$ for the EPYC 9755 — making the EPYC 9555P the 27.9% better value option.