AMD Next-Gen EPYC CPUs

New ZEN 4 Architecture

The new EPYC™ processor core is based on the ZEN 4 architecture with a 5nm manufacturing process, which significantly improves both the efficiency and performance of individual chips, but also brings improved cache and more powerful IO die. Thanks to these factors, AMD EPYC™ processors achieve 4. generation of much higher IPC values and high performance per core.

The 4th generation of processors offers us up to 96 cores per processor, allowing us to achieve a much lower TCO as we are able to fit the performance that would otherwise be provided by multiple processors into a single socket.

Extended Instruction Set

For AMD EPYC™ 4 server processors. generation, several important new instruction elements and protocols have been added.
The main advantage is the presence of the AVX-512 instruction set, which significantly increases performance. The performance increase is most noticeable in HPC applications, as the processor is capable of handling twice as much data, making the AVX-512 a key feature for training AI models, for example. In addition, the BFloat16 instruction sets, VNNI and the CXL 1.1 protocol have been added, which enables high-speed interconnections between system peripherals.

A new type of operating memory

The new DDR5 operating memory standard with a maximum frequency of up to 4800 MHz is designed for the EPYC™ 9004 series processors. We have 12 memory lines per socket, which allows us to reach a capacity of up to 6 TB of RAM per processor.

The overall RAS factor of the processor (reliability, availability and serviceability) has also been improved, as memory errors can be a common reason for system crashes. Of course, ECC memory support also helps us prevent this.

PCI Express 5. generation

The new PCI-Express gen 5 data bus specification doubles the speed of the previous generation, bringing us to transfer speeds of up to 32 GT/s or 64 GB/s.

Infinity Fabric 3. generation

Infinity fabric 3. generation is based on an improved xGMI3 architecture that increases data throughput and improves latency.. This results in much better chip-to-chip communication, which benefits, for example, HPC systems.

AMD Infinity Guard

The 9004 Series EPYC™ processors feature AMD Infinity Guard technology, a layered security system integrated directly into the processor. It then runs right alongside your programs and data, which it can check in real time.

AMD-EPYC-9004-Genoa-SKU-Naming-Convention

We have prepared a detailed comparison of current processor architectures — Intel Xeon, AMD EPYC™, IBM POWER, or ARM. In the article you will find tables with the parameters of each processor and also the advantages of their deployment for a specific type of applications.

Read the whole article

Comparison of parameters with previous generations

Parameters	AMD EPYC™ 7001	AMD EPYC™ 7003 s 3D V-Cache	AMD EPYC™ 9004
Max. number of cores	32	64	96
Max. RAM capacity	2 TB	4 TB	6 TB
Max. RAM frequency	2666 MHz	3200 MHz	4800 MHz
Number of I/O lines	128 x PCIe 3.0	128x PCIe 4.0	128x PCIe 5.0
L3 Cache	up to 64 MB	up to 256 MB	up to 384 MB

AMD EPYC™ 9004 processor parameters

Model	Number of cores	Number of threads	Base Frequency (GHz)	Max boost frequency	All core boost frekvency	TDP	L3 cache	Setting
9654/P	96	192	2.4 GHz	3.7 GHz	3.55 GHz	360 W	384 MB	2P / 1P
9634	84	168	2.25 GHz	3.7 GHz	3.10 GHz	290 W	384 MB	2P / 1P
9554/P	64	128	3.10 GHz	3.75 GHz	3.75 GHz	360 W	256 MB	2P / 1P
9534	64	128	2.45 GHz	3.7 GHz	3.55 GHz	280 W	256 MB	2P / 1P
9454/P	48	96	2.75 GHz	3.8 GHz	3.65 GHz	290 W	256 MB	2P / 1P
9354/P	32	64	3.25 GHz	3.8 GHz	3.75 GHz	280 W	256 MB	2P / 1P
9334	32	64	2.7 GHz	3.9 GHz	3.85 GHz	210 W	128 MB	2P / 1P
9254	24	48	2.9 GHz	4.15 GHz	3.9 GHz	200 W	128 MB	2P / 1P
9224	24	48	2.5 GHz	3.7 GHz	3.65 GHz	200 W	64 MB	2P / 1P
9124	16	32	3 GHz	3.7 GHz	3.6 GHz	200 W	64 MB	2P / 1P

High frequency models

Model	Number of cores	Number of threads	Base Frequency (GHz)	Max boost frequency	All core boost frekvency	TDP	L3 cache	Setting
9474F	48	96	3.6 GHz	4.1 GHz	3.95 GHz	360 W	256 MB	2P / 1P
9374F	32	64	3.85 GHz	4.3 GHz	4.1 GHz	320 W	256 MB	2P / 1P
9274F	24	48	4.05 GHz	4.3 GHz	4.1 GHz	320 W	256 MB	2P / 1P
9174F	16	32	4.1 GHz	4.4 GHz	4.15 GHz	320 W	256 MB	2P / 1P

Testing

We have test kits available to test the performance and features of AMD processors. If you are interested in testing, please fill out this form or contact Lukáš Vach.