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Square green ceramic server CPU with gold contact pads and silver metal heat spreader, SP3 socket form factor

AMD

AMD EPYC 7543 32-core 2.8 GHz server processor 100-000000345

SKU CH-ZMVK-RDCFM MPN 100-000000345

32-core server processor with 2.8 GHz base clock, 3.7 GHz max turbo, 256 MB L3 cache and 128 PCIe 4.0 lanes

  • Product nameEPYC 7543
  • CPU cores32-Core
  • CPU socketSocket SP3
  • Maximum turbo clock3.7 GHz
  • TDP rating225 W
  • Processor codenameMilan
  • 32 cores and 64 threads handle heavy multi-threaded workloads
  • 256 MB L3 cache reduces latency for faster data access
  • Max turbo frequency of 3.7 GHz boosts single-thread performance
  • 8-channel DDR4 3200 memory controller increases bandwidth
  • 128 PCIe 4.0 lanes support high-speed I/O expansion

32-Core EPYC 7543 for Dense Server Workloads

The AMD EPYC 7543 is a 32-core, 64-thread server processor built on the Milan architecture. It runs at a 2.8 GHz base clock and boosts to 3.7 GHz with a 256 MB L3 cache. The chip fits Socket SP3 platforms and supports eight-channel DDR4-3200 memory alongside 128 lanes of PCIe 4.0.

Suits Multi-Tenant Cloud and HPC Nodes.

This processor targets virtualisation hosts, database clusters, and compute-intensive HPC nodes that benefit from high core counts and large cache. Its 225 W TDP and active cooling requirement rule it out for passively cooled edge appliances or space-constrained 1U systems with limited thermal headroom.

256 MB L3 Cache Decides Fit for Memory-Bound

The 256 MB L3 cache is the specification that determines whether this part matches the workload. Applications with large working sets — such as in-memory databases or large-scale simulation — see reduced latency and higher throughput when the dataset fits in cache; smaller working sets gain less from the extra capacity.

How it compares

Measured against everything we stock in Server Processors, at today’s prices. Recalculated every night.

Price $2,049.99
Pricier than about 60% of the 621 comparable items (median $1,561.99).
CPU cores 32-Core
Higher than about 60% of the 386 comparable items (median 24).
Maximum turbo clock 3.7 GHz
Lower than about 60% of the 327 comparable items (median 3.9 GHz).

New to this? Buying a processor with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameAMD
Product lineAMD EPYC 7003
Model name100-000000345
Product nameEPYC 7543
Performance
Working frequency2.8 GHz
Processor
CPU cores32-Core
CPU socketSocket SP3
Maximum turbo clock3.7 GHz
TDP rating225 W
Processor codenameMilan
CPU threads64
Level 3 cache256 MB
64-bit capableYes
Process node7 nm
Virtualization supportYes
Maximum PCIe lanes128
Memory
Supported memory speedDDR4 3200
Channel configuration8 Channel
Ports & slots
PCIe generation4.0
Size & build
Shipping weight0.82 kg
Package size152 × 152 × 102 mm
In the box
Included coolerNot included - Processor Only

Questions about this item

What socket and power budget does the EPYC 7543 require on the motherboard?

It fits a Socket SP3 platform and has a 225 W thermal design power, so the board and cooler must support that socket and wattage.

How is the processor installed and what step is often missed?

The CPU drops into the SP3 LGA socket; the critical step is applying a server-grade cooler rated for 225 W, because no cooling device is included in the box.

What ongoing maintenance does the 7543 need?

Plan to replace thermal paste every two to three years and keep heatsink fins free of dust so the 225 W TDP stays within safe temperatures.

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