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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

  • NameEPYC 7543
  • CPU Socket TypeSocket SP3
  • Core NameMilan
  • # of Cores32-Core
  • # of Threads64
  • Operating Frequency2.8 GHz
  • 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.

Highlights

  • 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

Specifications

BrandAMD
SeriesAMD EPYC 7003
NameEPYC 7543
Model100-000000345
CPU Socket TypeSocket SP3
Core NameMilan
# of Cores32-Core
# of Threads64
Operating Frequency2.8 GHz
Max Turbo Frequency3.7 GHz
L3 Cache256MB
64-Bit SupportYes
Manufacturing Tech7 nm
Integrated Memory Controller SpeedDDR4 3200
Memory Channel8 Channel
Virtualization Technology SupportYes
PCI Express Revision4.0
Max # of PCI Express Lanes128
Thermal Design Power225W
Cooling DeviceCooling device not included - Processor Only
Shipping weight0.82 kg
Package size152 × 152 × 102 mm

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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