
AMD EPYC™ Processors
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.
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.
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.
M Computers is AMD’s Select Partner for EPYC processors.