EPYC 7551P vs Xeon Gold 6426Y

CPU

GPU

EPYC 7551P

32 Cores64 Thrd180 WWMax: 3 GHz2017

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Xeon Gold 6426Y

16 Cores32 Thrd185 WWMax: 4.1 GHz2023

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EPYC 7551P vs Xeon Gold 6426Y Performance Spectrum

EPYC 7551P

32 / 64

38,111

+0.4%

Ryzen Threadripper 9960X

Ryzen Threadripper 7970X

Xeon Gold 6426Y

16 / 32

37,944

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 7551P vs Xeon Gold 6426Y 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 7551P vs Xeon Gold 6426Y: Pros, Cons & Final Verdict

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

EPYC 7551P

2017

Why buy it

✅+0.4% higher PassMark.
✅+70.7% larger total L3 cache (64 MB vs 38 MB).
✅Costs $45 less on MSRP ($2,100 MSRP vs $2,145 MSRP).
✅Draws 180W instead of 185W, a 5W reduction.
✅60% more PCIe lanes (128 vs 80) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon Gold 6426Y across 50 shared CPU benchmark tests.
❌Older platform position on TR4 with DDR4, while Xeon Gold 6426Y moves to LGA4677 and DDR5.

Xeon Gold 6426Y

2023

Why buy it

✅Better for gaming: +18.0% higher average FPS across 50 shared CPU benchmark tests.
✅Newer platform on LGA4677 with DDR5 support instead of TR4 and DDR4.

Trade-offs

❌Lower PassMark (37,944 vs 38,111).
❌Smaller total L3 cache (38 MB vs 64 MB).
❌
2.1% HIGHER MSRP
$2,145 MSRPvs$2,100 MSRP

Quick Answers

So, is EPYC 7551P better than Xeon Gold 6426Y?

It depends on what you want from the system. For gaming, Xeon Gold 6426Y is ahead with a 18.0% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, EPYC 7551P pulls ahead with 0.4% better PassMark. EPYC 7551P also has the bigger cache pool with 70.7% larger total L3 cache (64 MB vs 38 MB).

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

For streaming, content creation, and heavier multitasking, EPYC 7551P is the stronger fit. You are getting 0.4% better PassMark, backed by 32 cores and 64 threads. It also has the larger cache pool with 70.7% larger total L3 cache (64 MB vs 38 MB).

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

EPYC 7551P is the better buy right now. EPYC 7551P comes in $45 cheaper on MSRP at $2,100 MSRP versus $2,145 MSRP, and it still gives you 0.4% better PassMark. The compromise is that Xeon Gold 6426Y is still the better pure gaming CPU with a 18.0% average FPS lead across 50 shared CPU game tests in our data. It is also 2.6% better value on MSRP (18.1 vs 17.7 PassMark/$), 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 Gold 6426Y makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2023 vs 2017) and a healthier platform with LGA4677 and DDR5 instead of TR4. That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

EPYC 7551P vs Xeon Gold 6426Y Technical Specifications

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

EPYC 7551P

The EPYC 7551P is manufactured by AMD. It was released in 29 June 2017 (8 years ago). It is based on the Naples (2017−2018) architecture. It features 32 cores and 64 threads. Base frequency is 2 GHz, with boost up to 3 GHz. L3 cache: 64 MB (total). L2 cache: 512K (per core). Built on 14 nm process technology. Socket: TR4. Thermal design power (TDP): 180 Watt. Memory support: DDR4 Eight-channel. Passmark benchmark score: 38,111 points. Launch price was $2,100.

Xeon Gold 6426Y

The Xeon Gold 6426Y is manufactured by Intel. It was released in 10 January 2023 (2 years ago). It is based on the Sapphire Rapids (2023−2024) architecture. It features 16 cores and 32 threads. Base frequency is 2.5 GHz, with boost up to 4.1 GHz. L3 cache: 37.5 MB. L2 cache: 2 MB (per core). Built on Intel 7 nm process technology. Socket: LGA4677. Thermal design power (TDP): 185 Watt. Memory support: DDR5-4800, DDR5-4400. Passmark benchmark score: 37,944 points. Launch price was $1,517.

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Processing Power

The EPYC 7551P packs 32 cores / 64 threads, while the Xeon Gold 6426Y offers 16 cores / 32 threads — the EPYC 7551P has 16 more cores. Boost clocks reach 3 GHz on the EPYC 7551P versus 4.1 GHz on the Xeon Gold 6426Y — a 31% clock advantage for the Xeon Gold 6426Y (base: 2 GHz vs 2.5 GHz). The EPYC 7551P uses the Naples (2017−2018) architecture (14 nm), while the Xeon Gold 6426Y uses Sapphire Rapids (2023−2024) (Intel 7 nm). In PassMark, the EPYC 7551P scores 38,111 against the Xeon Gold 6426Y's 37,944 — a 0.4% lead for the EPYC 7551P. L3 cache: 64 MB (total) on the EPYC 7551P vs 37.5 MB on the Xeon Gold 6426Y.

Feature	EPYC 7551P	Xeon Gold 6426Y
Cores / Threads	32 / 64+100%	16 / 32
Boost Clock	3 GHz	4.1 GHz+37%
Base Clock	2 GHz	2.5 GHz+25%
L3 Cache	64 MB (total)+71%	37.5 MB
L2 Cache	512K (per core)+25500%	2 MB (per core)
Process	14 nm	Intel 7 nm-50%
Architecture	Naples (2017−2018)	Sapphire Rapids (2023−2024)
PassMark	38,111	37,944

🧠

Memory & Platform

The EPYC 7551P uses the TR4 socket (PCIe 4.0), while the Xeon Gold 6426Y uses LGA4677 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 2666 on the EPYC 7551P versus 4800 on the Xeon Gold 6426Y — the Xeon Gold 6426Y supports 80% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon Gold 6426Y supports up to 4096 of RAM compared to 2048 — 100% more capacity for professional workloads. Both feature 8-channel memory with ECC support. PCIe lanes: 128 (EPYC 7551P) vs 80 (Xeon Gold 6426Y) — the EPYC 7551P offers 48 more lanes for additional GPUs or NVMe drives. Chipset compatibility: SP3 (EPYC 7551P) and LGA4677 (Xeon Gold 6426Y).

Feature	EPYC 7551P	Xeon Gold 6426Y
Socket	TR4	LGA4677
PCIe Generation	PCIe 4.0	PCIe 5.0+25%
Max RAM Speed	2666	4800+80%
Max RAM Capacity	2048	4096+100%
RAM Channels	8	8
ECC Support	Yes	Yes
PCIe Lanes	128+60%	80

🔧

Advanced Features

Neither processor supports overclocking. Both support AVX-512 instructions, benefiting scientific computing, AI inference, and encryption workloads. Virtualization support: AMD-V, IOMMU (EPYC 7551P) vs VT-x, VT-d (Xeon Gold 6426Y). Direct competitor: EPYC 7551P rivals Xeon Platinum 8160; Xeon Gold 6426Y rivals EPYC 8124P.

Feature	EPYC 7551P	Xeon Gold 6426Y
Integrated GPU	No	No
IGPU Model	None	None
Unlocked	No	No
AVX-512	Yes	Yes
Virtualization	AMD-V, IOMMU	VT-x, VT-d

💰

Value Analysis

At launch, the EPYC 7551P was priced at $2100, while the Xeon Gold 6426Y came in at $2145. On launch pricing ($2100 vs $2145), EPYC 7551P was $45 cheaper. In terms of value on MSRP (PassMark points per dollar), the EPYC 7551P delivers 18.1 pts/$ vs 17.7 pts/$ for the Xeon Gold 6426Y — making the EPYC 7551P the 2.6% better value option.

Feature	EPYC 7551P	Xeon Gold 6426Y
MSRP	$2100-2%	$2145
Performance per Dollar	18.1+2%	17.7
Release Date	2017	2023

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