AMD EPYC 7643 vs AMD EPYC 7543P

Updated Nov 2026 · Scored by the Let’s Compare Data Engine · How we score

For most buyers the AMD EPYC 7643 is the better pick — it scores 86/100 to the AMD EPYC 7543P's 63, leading on Core Specifications and Benchmark. Choose the AMD EPYC 7543P instead if you want to spend less.

Verdict

Our overall take, at a glance

AMD EPYC 7643 leads overall

AMD EPYC 7643

AMD EPYC 7543P

Why it stands out

Core Specifications Cores: 48
Core Specifications Threads: 96
Core Specifications L1 Cache: 3,072 KB (50% more)

Winner by category for AMD EPYC 7643 vs AMD EPYC 7543P
Category	AMD EPYC 7643	AMD EPYC 7543P	Winner
Core Specifications	67	40	AMD EPYC 7643
Integrated Graphics	0	0	Tie
Benchmark	96	74	AMD EPYC 7643

In-depth analysisAI

AI-generated from the cited sources — may be incomplete or inaccurate; verify important details before deciding · generated Nov 2026.

AMD EPYC 7643

The AMD EPYC 7643 is a high-density enterprise server processor designed for data centers and virtualized environments. Built on a 7nm process, it features 48 cores and 96 threads alongside a massive 256 MB L3 cache. Operating at a base frequency of 2.3 GHz with a maximum boost of 3.6 GHz, this chip balances heavy parallel compute capabilities with a standard 225W power envelope.

Best for High-density server virtualization and multi-tenant cloud infrastructureBest for Data-intensive compute clusters utilizing large L3 cache access

Pros

High core density with 48 cores and 96 threads for massive multi-threaded throughput
Generous 256 MB L3 cache to support memory-bound enterprise workloads
Reasonable power draw with a 225W base TDP and 240W maximum limit

Cons

Modest 2.3 GHz base clock speed can limit performance in single-threaded tasks
No integrated graphics capability
Locked CPU multiplier prevents manual frequency tuning

AMD EPYC 7543P

The AMD EPYC 7543P is a 32-core server processor built on the Zen 3-based 'Milan' architecture. It is designed specifically for single-socket (1P) configurations, aiming to deliver high-density computing performance and efficiency for data centers without the added complexity of multi-socket setups.

Best for Single-socket enterprise servers aiming to maximize compute density while…Best for Virtualization environments looking to optimize costs associated with…

Pros

High-density performance featuring 32 cores optimized for single-processor configurations
Strong power efficiency and architectural advantages of the EPYC Milan generation
Helps lower software licensing costs that are charged on a per-socket basis

Cons

Limited strictly to single-socket systems, offering no pathway for dual-socket scale-up
Faces strong price and performance competition from alternative architectures like Intel's Ice Lake

Value for Money

Which is the better deal for the price

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AMD EPYC 7643

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AMD EPYC 7543P

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Performance

Higher benchmark score = faster

AMD EPYC 764376,259

AMD EPYC 7543P66,590

See the raw benchmark values →

Benchmark score — a measured indicator of raw performance, not a guarantee of real-world speed.

Review Videos

Hand-picked expert reviews for each product

Detailed Specifications

The full spec sheet, side by side

Core Specifications

Feature	AMD EPYC 7643	AMD EPYC 7543P
Cores	48	32
Threads	96	64
Base Frequency	2.3 GHz	2.8 GHz22% more
Base Power Consumption	225 W	225 W
Maximum Frequency	3.6 GHz	3.7 GHz3% more
Maximum Power Consumption	240 W	240 W
L1 Cache	3,072 KB50% more	2,048 KB
L2 Cache	24 MB50% more	16 MB
L3 Cache	256 MB	256 MB
Lithography Process	7 nm	N/A
Is unlocked	N/A	N/A

Integrated Graphics

Feature	AMD EPYC 7643	AMD EPYC 7543P
Model	N/A	N/A

Benchmark

Feature	AMD EPYC 7643	AMD EPYC 7543P
PassMark CPU Mark	76,25915% more	66,590

Specification Note

Specifications are compiled from official manufacturer data and other reliable internet sources. Some features may vary by region or model configuration.

Frequently Asked Questions

Common questions about AMD EPYC 7643 vs AMD EPYC 7543P comparison

They are closely matched: AMD EPYC 7643 scores 87/100 and AMD EPYC 7543P scores 86/100 in our overall comparison — within 1 point. Neither is a clear winner overall, so the decision comes down to the specific features and price that matter most to you.

AMD EPYC 7643 and AMD EPYC 7543P are compared side by side above across every spec in the cpus category — including performance, features and design — each scored 0–100 so you can see exactly where one leads the other. Our overall scores are 87/100 for AMD EPYC 7643 and 86/100 for AMD EPYC 7543P.

It's close — AMD EPYC 7643 (87/100) and AMD EPYC 7543P (86/100) score almost the same. Pick based on price and the individual specs that matter most to you; the comparison above shows where each one pulls ahead.