AMD EPYC 9556

Buying advice

Choose EPYC 9556 for 64-core virtualization or analytics on SP7. The 300 W power reference and 16 memory channels make it worth considering when channel count matters more than the 9586F’s higher clocks. SP7 and SP8 motherboards are not interchangeable.

Specifications

LAUNCH

Parameters for AMD EPYC 9556
Parameter	AMD EPYC 9556
Released	-

CPU BENCHMARKS

Tests and capabilities for AMD EPYC 9556
Parameter	AMD EPYC 9556
Geekbench 6 Single	-
Geekbench 6 Multi	-
iGPU 3DMark TS	-

ARCHITECTURE & CORES

Parameters for AMD EPYC 9556
Parameter	AMD EPYC 9556
Architecture	-
Process	-

Show all 3 parameters in ARCHITECTURE & CORES

Parameters for AMD EPYC 9556
Parameter	AMD EPYC 9556
Cores / Threads Meaning & limits Physical cores and available threads are separate counts. Hybrid core types and unknown thread counts retain their stated limits.	64C/128T

CLOCK & CACHE

Parameters for AMD EPYC 9556
Parameter	AMD EPYC 9556
Clock Speed	2.75 / 4.3 GHz
Cache Meaning & limits Cache can be total, per core, private or shared. Read the stated topology; total cache is not automatically L3.	384 MB

Show all 4 parameters in CLOCK & CACHE

Parameters for AMD EPYC 9556
Parameter	AMD EPYC 9556
Total L3 Cache	384 MBOne CPU package
Cache Topology	L3 · unspecified · 384 MB · package totalOne CPU package

POWER & BATTERY

Parameters for AMD EPYC 9556
Parameter	AMD EPYC 9556
Power Profiles · 1	Vendor power mode · 300 W · Compute plus I/O dies; processor specification, not wall powerProcessor power specification
Power Profiles · 2	Vendor power mode · 220–300 W · CPU power configuration range; not relabeled cTDPProcessor power specification

Show all 3 parameters in POWER & BATTERY

Parameters for AMD EPYC 9556
Parameter	AMD EPYC 9556
Power rating / limit Meaning & limits Stored power rating or limit. Default TDP, processor base power and maximum turbo power describe different conditions; neither larger nor smaller is automatically better.	300 W

MEMORY & STORAGE

Parameters for AMD EPYC 9556
Parameter	AMD EPYC 9556
Maximum Memory Bandwidth	1638 GB/sPer socket; theoretical maximum
Memory Profiles · 1	DDR5 · up to 8000 MT/s · RDIMM maximum transfer rateOne CPU package

Show all 4 parameters in MEMORY & STORAGE

Parameters for AMD EPYC 9556
Parameter	AMD EPYC 9556
Memory Profiles · 2	MRDIMM · up to 12800 MT/s · MRDIMM maximum transfer rate; population-dependentOne CPU package
Memory Type	DDR5 RDIMM \| MRDIMMOne CPU package

PLATFORM & HARDWARE

Parameters for AMD EPYC 9556
Parameter	AMD EPYC 9556
Platform	-
Socket	SP7

Show all 4 parameters in PLATFORM & HARDWARE

Parameters for AMD EPYC 9556
Parameter	AMD EPYC 9556
iGPU	-
iGPU FP32 TFLOPS Meaning & limits FP32 describes floating-point capability or a published reference, not a measured application result. Method and clock conditions affect interpretation.	-

BODY & DIMENSIONS

Parameters for AMD EPYC 9556
Parameter	AMD EPYC 9556
Package Size (L × W)	-

OTHER SPECIFICATIONS

Parameters for AMD EPYC 9556
Parameter	AMD EPYC 9556
Manufacturer	AMD

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