EPYC 9555 vs Xeon 6781P

EPYC 9555 vs Xeon 6781P Performance Spectrum

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.

EPYC 9555 vs Xeon 6781P 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 9555 vs Xeon 6781P: Pros, Cons & Final Verdict

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

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).

Quick Answers

So, is EPYC 9555 better than Xeon 6781P?

Yes. EPYC 9555 is the better all-around CPU here. It gives you a 15.2% average FPS lead across 50 shared CPU game tests in our data and 13% better PassMark, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, EPYC 9555 is the better pick. 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 stronger 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 better buy right now. EPYC 9555 comes in 9.7% more expensive on MSRP at $9,826 MSRP versus $8,960 MSRP, and it still gives you a 15.2% average FPS lead across 50 shared CPU game tests in our data. It is also 3.0% better value on MSRP (13.6 vs 13.2 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Xeon 6781P makes more sense long term 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 keep paying off in CPU-limited games and high-refresh builds.

EPYC 9555 vs Xeon 6781P Technical Specifications

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

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. Maximum memory speed reaches DDR5-6000 on the EPYC 9555 versus DDR5-6400 on the Xeon 6781P — the Xeon 6781P supports 6.7% faster memory, which can translate to measurable gains in memory-sensitive workloads. The EPYC 9555 supports up to 6 TB of RAM compared to 4 TB — 50% 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+7%
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

At launch, the EPYC 9555 was priced at $9826, while the Xeon 6781P came in at $8960. On launch pricing ($9826 vs $8960), Xeon 6781P was $866 cheaper. In terms of value on MSRP (PassMark points per dollar), the EPYC 9555 delivers 13.6 pts/$ vs 13.2 pts/$ for the Xeon 6781P — making the EPYC 9555 the 3% better value option.

Feature	EPYC 9555	Xeon 6781P
MSRP	$9826	$8960-9%
Performance per Dollar	13.6+3%	13.2
Release Date	2024	2025

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