EPYC 7551 vs Ryzen 5 7645HX

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.

Value Upgrade Path

This is the official ChipVERSUS Value Rating, comparing raw performance (PassMark) per dollar. Components placed above yours deliver better value for money.

MSRP is the manufacturer's suggested retail price.•
Avg price is the current average price collected from markets across the web.

Performance Per Dollar EPYC 7551

#4

Xeon W-11865MLE

MSRP: $467|Avg: $350

13%

#5

Xeon W-11865MRE

MSRP: $600|Avg: $600

13%

#6

Xeon Gold 6240R

MSRP: $2444|Avg: N/A

152%

#10

Xeon 6337P

MSRP: $60|Avg: $5

135%

#15

EPYC 9174F

MSRP: $194|Avg: $30

104%

#16

EPYC 7302

MSRP: $978|Avg: $109

104%

#19

EPYC 7551

MSRP: N/A|Avg: N/A

100%

#21

Xeon Platinum 8260M

MSRP: $7705|Avg: N/A

95%

#22

Xeon Platinum 8268

MSRP: $6302|Avg: N/A

94%

#24

Xeon Gold 6130H

MSRP: $1894|Avg: N/A

91%

Based on actual market prices and performance synthetic scores.

Performance Per Dollar Ryzen 5 7645HX

#10

Ryzen 7 260

MSRP: $199|Avg: $70

103%

#12

Ryzen 5 7645HX

MSRP: N/A|Avg: N/A

100%

#13

Ryzen 3 210

MSRP: $99|Avg: $99

97%

#14

Ryzen 5 PRO 230

MSRP: $150|Avg: $150

95%

#15

Ryzen 5 220

MSRP: $150|Avg: $150

91%

#18

Ryzen 5 8500G

MSRP: $179|Avg: $150

87%

#27

Core Ultra 7 265HX

MSRP: $450|Avg: N/A

79%

Based on actual market prices and performance synthetic scores.

Performance Comparison

About PassMark

🏆 Chipversus Verdict

🚀 Performance Leadership

Generational Difference: This comparison involves processors from different technological eras. The Ryzen 5 7645HX (2023) utilizes 5 nm technology and DDR5-5200, providing a fundamental performance advantage.

Insight	EPYC 7551	Ryzen 5 7645HX
Gaming	❌ Lower gaming performance	✅ Superior gaming performance
Workstation	❌ Weaker in multi-core tasks	✅ Better multi-core power
Price	Equivalent pricing	Equivalent pricing
Longevity	✨ Modern (Naples (2017−2018) / 14 nm)	✨ Modern (Dragon Range (Zen4) (2023) / 5 nm)

💎 Value Proposition

The EPYC 7551 (2017) relies on 14 nm technology and **DDR4 Eight-channel**, placing it in a different performance category relative to modern standards.

Insight	EPYC 7551	Ryzen 5 7645HX
Cost Efficiency	❌ Lower cost efficiency	❌ Lower cost efficiency
Upfront Cost	Equivalent pricing	Equivalent pricing

Performance Check

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 7551 Benchmark Check

Ryzen 5 7645HX Benchmark Check

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Technical Specifications

Side-by-side comparison of EPYC 7551 and Ryzen 5 7645HX

EPYC 7551

The EPYC 7551 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: 25,844 points. Launch price was $3,400.

Ryzen 5 7645HX

The Ryzen 5 7645HX is manufactured by AMD. It was released in 4 January 2023 (2 years ago). It is based on the Dragon Range (Zen4) (2023) architecture. It features 6 cores and 12 threads. Base frequency is 4 GHz, with boost up to 5 GHz. L3 cache: 32 MB (total). L2 cache: 1 MB (per core). Built on 5 nm process technology. Socket: FL1. Thermal design power (TDP): 45 Watt. Memory support: DDR5-5200. Passmark benchmark score: 26,097 points. Launch price was $299.

⚡

Processing Power

The EPYC 7551 packs 32 cores / 64 threads, while the Ryzen 5 7645HX offers 6 cores / 12 threads — the EPYC 7551 has 26 more cores. Boost clocks reach 3 GHz on the EPYC 7551 versus 5 GHz on the Ryzen 5 7645HX — a 50% clock advantage for the Ryzen 5 7645HX (base: 2 GHz vs 4 GHz). The EPYC 7551 uses the Naples (2017−2018) architecture (14 nm), while the Ryzen 5 7645HX uses Dragon Range (Zen4) (2023) (5 nm). In PassMark, the EPYC 7551 scores 25,844 against the Ryzen 5 7645HX's 26,097 — a 1% lead for the Ryzen 5 7645HX. L3 cache: 64 MB (total) on the EPYC 7551 vs 32 MB (total) on the Ryzen 5 7645HX.

Feature	EPYC 7551	Ryzen 5 7645HX
Cores / Threads	32 / 64+433%	6 / 12
Boost Clock	3 GHz	5 GHz+67%
Base Clock	2 GHz	4 GHz+100%
L3 Cache	64 MB (total)+100%	32 MB (total)
L2 Cache	512K (per core)	1 MB (per core)+100%
Process	14 nm	5 nm-64%
Architecture	Naples (2017−2018)	Dragon Range (Zen4) (2023)
PassMark	25,844	26,097
Cinebench R23 Multi	—	13,985
Geekbench 6 Single	—	2,588
Geekbench 6 Multi	—	11,717

🧠

Memory & Platform

The EPYC 7551 uses the TR4 socket (PCIe 4.0), while the Ryzen 5 7645HX uses FL1 (PCIe 5.0) — making them incompatible on the same motherboard.

Feature	EPYC 7551	Ryzen 5 7645HX
Socket	TR4	FL1
PCIe Generation	PCIe 4.0	PCIe 5.0+25%
Max RAM Speed	—	DDR5-5200
Max RAM Capacity	—	64 GB
RAM Channels	—	2
ECC Support	—	❌
PCIe Lanes	—	28

🔧

Advanced Features

Virtualization: not specified (EPYC 7551) / AMD-V (SVM) (Ryzen 5 7645HX). The Ryzen 5 7645HX includes integrated graphics (Radeon 610M), while the EPYC 7551 requires a dedicated GPU. Primary use case: Ryzen 5 7645HX targets Gaming. Direct competitor: Ryzen 5 7645HX rivals Core i5-13500HX.