EPYC 9555 vs Xeon 6781P

CPU

GPU

EPYC 9555

64 Cores128 Thrd360 WWMax: 4.4 GHz2024

Popular choices:

•••••••••

Xeon 6781P

80 Cores160 Thrd350 WWMax: 3.8 GHz2025

Popular choices:

•••••••••

Performance Spectrum - CPU

EPYC 9555

64 / 128

133,253

+13.0%

Ryzen 9 9950X3D

Ryzen Threadripper 7960X

Ryzen Threadripper 7970X

Ryzen Threadripper 9970X

Ryzen Threadripper 9980X

Ryzen Threadripper PRO 7995WX

Ryzen Threadripper PRO 9985WX

Ryzen Threadripper PRO 9995WX

Xeon 6781P

80 / 160

117,946

0.0%

About PassMark

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 9555

2024

Why buy it

✅Better for gaming: +15.2% higher average FPS across 50 shared CPU benchmark tests.

Trade-offs

❌Smaller total L3 cache (256 MB vs 336 MB).
❌
9.7% HIGHER MSRP
$9,826 MSRPvs$8,960 MSRP

Xeon 6781P

2025

Why buy it

✅+31.3% larger total L3 cache (336 MB vs 256 MB).
✅Costs $866 less on MSRP ($8,960 MSRP vs $9,826 MSRP).
✅6.3% more PCIe lanes (136 vs 128) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than EPYC 9555 across 50 shared CPU benchmark tests.
❌Lower PassMark (117,946 vs 133,253).

EPYC 9555

2024

Xeon 6781P

2025

Why buy it

✅Better for gaming: +15.2% higher average FPS across 50 shared CPU benchmark tests.

Why buy it

✅+31.3% larger total L3 cache (336 MB vs 256 MB).
✅Costs $866 less on MSRP ($8,960 MSRP vs $9,826 MSRP).
✅6.3% more PCIe lanes (136 vs 128) for storage and expansion-heavy builds.

Trade-offs

❌Smaller total L3 cache (256 MB vs 336 MB).
❌
9.7% HIGHER MSRP
$9,826 MSRPvs$8,960 MSRP

Trade-offs

❌Worse for gaming: lower average FPS than EPYC 9555 across 50 shared CPU benchmark tests.
❌Lower PassMark (117,946 vs 133,253).

Quick Answers

So, is EPYC 9555 better than Xeon 6781P?

Yes. EPYC 9555 is the better overall CPU here. You are getting a 15.2% average FPS lead across 50 shared CPU game tests in our data and 13% better PassMark, which makes it the stronger all-around choice.

Which one is better for gaming?

If gaming is the priority, EPYC 9555 is the better pick here. According to our tests, it delivers 15.2% 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 9555 is the better fit. You are getting 13% better PassMark, backed by 64 cores and 128 threads.

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

EPYC 9555 is the smarter buy today. EPYC 9555 is 9.7% more expensive on MSRP at $9,826 MSRP versus $8,960 MSRP, and it gives you a 15.2% average FPS lead across 50 shared CPU game tests in our data. It is also 3.0% better value on MSRP (13.6 vs 13.2 PassMark/$), 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?

Xeon 6781P is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2025 vs 2024) and 31.3% larger total L3 cache (336 MB vs 256 MB). That extra cache should hold up really well in CPU-limited games and high-refresh builds.

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 9555 Benchmark Check

Xeon 6781P Benchmark Check

Path of Exile 2

Preset	EPYC 9555	Xeon 6781P
1080p
low	171 FPS	187 FPS
medium	142 FPS	165 FPS
high	122 FPS	131 FPS
ultra	99 FPS	106 FPS
1440p
low	150 FPS	155 FPS
medium	121 FPS	131 FPS
high	99 FPS	100 FPS
ultra	83 FPS	82 FPS
4K
low	84 FPS	70 FPS
medium	73 FPS	63 FPS
high	57 FPS	49 FPS
ultra	47 FPS	40 FPS

Open EPYC 9555 Open Xeon 6781P

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	EPYC 9555	Xeon 6781P
1080p
low	655 FPS	285 FPS
medium	566 FPS	252 FPS
high	459 FPS	208 FPS
ultra	397 FPS	171 FPS
1440p
low	546 FPS	233 FPS
medium	483 FPS	210 FPS
high	404 FPS	178 FPS
ultra	328 FPS	142 FPS
4K
low	331 FPS	144 FPS
medium	295 FPS	133 FPS
high	268 FPS	120 FPS
ultra	236 FPS	100 FPS

Open EPYC 9555 Open Xeon 6781P

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	EPYC 9555	Xeon 6781P
1080p
low	747 FPS	849 FPS
medium	634 FPS	768 FPS
high	590 FPS	730 FPS
ultra	519 FPS	641 FPS
1440p
low	561 FPS	737 FPS
medium	474 FPS	662 FPS
high	434 FPS	626 FPS
ultra	376 FPS	558 FPS
4K
low	405 FPS	493 FPS
medium	326 FPS	402 FPS
high	288 FPS	364 FPS
ultra	229 FPS	303 FPS

Open EPYC 9555 Open Xeon 6781P

League of Legends

League of Legends

Valorant

Preset	EPYC 9555	Xeon 6781P
1080p
low	1005 FPS	959 FPS
medium	902 FPS	864 FPS
high	778 FPS	745 FPS
ultra	702 FPS	644 FPS
1440p
low	809 FPS	784 FPS
medium	704 FPS	684 FPS
high	603 FPS	587 FPS
ultra	533 FPS	502 FPS
4K
low	574 FPS	563 FPS
medium	510 FPS	505 FPS
high	447 FPS	447 FPS
ultra	392 FPS	386 FPS

Open EPYC 9555 Open Xeon 6781P

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of EPYC 9555 and Xeon 6781P

EPYC 9555

The EPYC 9555 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: 133,253 points. Launch price was $9,826.

Xeon 6781P

The Xeon 6781P is manufactured by Intel. It was released in 24 February 2025 (less than a year ago). It is based on the Granite Rapids (2024−2025) architecture. It features 80 cores and 160 threads. Base frequency is 2 GHz, with boost up to 3.8 GHz. L3 cache: 336 MB (total). L2 cache: 2 MB (per core). Built on Intel 3 nm process technology. Socket: LGA4710. Thermal design power (TDP): 350 Watt. Memory support: DDR5(6400MT/s), MRDIMM(8800MT/s). Passmark benchmark score: 117,946 points. Launch price was $8,960.

⚡

Processing Power

The EPYC 9555 packs 64 cores / 128 threads, while the Xeon 6781P offers 80 cores / 160 threads — the Xeon 6781P has 16 more cores. Boost clocks reach 4.4 GHz on the EPYC 9555 versus 3.8 GHz on the Xeon 6781P — a 14.6% clock advantage for the EPYC 9555 (base: 3.2 GHz vs 2 GHz). The EPYC 9555 uses the Turin (2024) architecture (4 nm), while the Xeon 6781P uses Granite Rapids (2024−2025) (Intel 3 nm). In PassMark, the EPYC 9555 scores 133,253 against the Xeon 6781P's 117,946 — a 12.2% lead for the EPYC 9555. L3 cache: 256 MB (total) on the EPYC 9555 vs 336 MB (total) on the Xeon 6781P.

Feature	EPYC 9555	Xeon 6781P
Cores / Threads	64 / 128	80 / 160+25%
Boost Clock	4.4 GHz+16%	3.8 GHz
Base Clock	3.2 GHz+60%	2 GHz
L3 Cache	256 MB (total)	336 MB (total)+31%
L2 Cache	1 MB (per core)	2 MB (per core)+100%
Process	4 nm	Intel 3 nm-25%
Architecture	Turin (2024)	Granite Rapids (2024−2025)
PassMark	133,253+13%	117,946

🧠

Memory & Platform

The EPYC 9555 uses the SP5 socket (PCIe 5.0), while the Xeon 6781P uses LGA4710 (PCIe 4.0) — making them incompatible on the same motherboard. Both support up to DDR5-6000 memory speed. The EPYC 9555 supports up to 6 TB of RAM compared to 4 TB — 40% more capacity for professional workloads. Memory channels: 12 (EPYC 9555) vs 8 (Xeon 6781P). PCIe lanes: 128 (EPYC 9555) vs 136 (Xeon 6781P) — the Xeon 6781P offers 8 more lanes for additional GPUs or NVMe drives.

Feature	EPYC 9555	Xeon 6781P
Socket	SP5	LGA4710
PCIe Generation	PCIe 5.0+25%	PCIe 4.0
Max RAM Speed	DDR5-6000	DDR5-6400
Max RAM Capacity	6 TB+50%	4 TB
RAM Channels	12+50%	8
ECC Support	Yes	Yes
PCIe Lanes	128	136+6%

🔧

Advanced Features

Virtualization support: AMD-V, SEV-SNP (EPYC 9555) vs VT-x, VT-d, VT-x EPT (Xeon 6781P). Primary use case: EPYC 9555 targets Data Center, Xeon 6781P targets Data Center / Cloud Scale. Direct competitor: EPYC 9555 rivals Xeon 6972P; Xeon 6781P rivals EPYC 9655.

Feature	EPYC 9555	Xeon 6781P
Integrated GPU	No	No
Virtualization	AMD-V, SEV-SNP	VT-x, VT-d, VT-x EPT
Target Use	Data Center	Data Center / Cloud Scale

💰

Value Analysis

The EPYC 9555 launched at $9826 MSRP, while the Xeon 6781P debuted at $8960. On MSRP ($9826 vs $8960), the Xeon 6781P is $866 cheaper. In terms of value on MSRP (PassMark points per dollar), the EPYC 9555 delivers 13.6 pts/$ vs 13.2 pts/$ for the Xeon 6781P — making the EPYC 9555 the 3% better value option.