Latest revision as of 13:36, 18 March 2023

EPYC 9474F is a 64-bit 48-core x86 server microprocessor designed and introduced by AMD in late 2022. This multi-chip processor, which is based on the Zen 4 microarchitecture, incorporates eight Core Complex Dies fabricated on a TSMC 5 nm process and a large I/O die also manufactured by TSMC. The 9474F has a TDP of 360 W with a base frequency of 3.6 GHz and a boost frequency of up to 4.1 GHz. This processor supports up to two-way SMP and up to 6 TiB of 12 channel DDR5-4800 memory per socket.

This is a frequency optimized SKU with high cache/core ratio, binned for high performance per core.

Cache[edit]

Main article: Zen 4 § Cache

[Edit/Modify Cache Info]

Cache Organization Cache is a hardware component containing a relatively small and extremely fast memory designed to speed up the performance of a CPU by preparing ahead of time the data it needs to read from a relatively slower medium such as main memory. The organization and amount of cache can have a large impact on the performance, power consumption, die size, and consequently cost of the IC. Cache is specified by its size, number of sets, associativity, block size, sub-block size, and fetch and write-back policies. Note: All units are in kibibytes and mebibytes.

L1$ 3 MiB 3,072 KiB 3,145,728 B L1I$ 1536 KiB 1,572,864 B 1.5 MiB 48 × 32 KiB 8-way set associative   L1D$ 1536 KiB 1,572,864 B 1.5 MiB 48 × 32 KiB 8-way set associative write-back L2$ 48 MiB 49,152 KiB 50,331,648 B 0.0469 GiB     48 × 1 MiB 8-way set associative write-back L3$ 256 MiB 262,144 KiB 268,435,456 B 0.25 GiB     8 × 32 MiB 16-way set associative write-back

Memory controller[edit]

Main article: Genoa § Memory Interface

[Edit/Modify Memory Info]

	Integrated Memory Controller
	Max Type DDR5-4800 Supports ECC Yes Max Mem 6 TiB Controllers 24 Channels 12 Max Bandwidth 460.8 GB/s 429.153 GiB/s 439,453.125 MiB/s 460,800 MB/s 0.419 TiB/s 0.461 TB/s Bandwidth Single 38.4 GB/s Double 76.8 GB/s Quad 153.6 GB/s Hexa 230.4 GB/s Octa 307.2 GB/s Deca 384.0 GB/s

Note one memory channel comprises two independent DDR5 subchannels with 32 data and 8 ECC lanes each.

Expansions[edit]

Main article: Genoa § I/O Interfaces

[Edit/Modify Expansions Info]

	Expansion Options
PCIe Revision: 5.0 Max Lanes: 128 SATA Revision: 3.0 Max Ports: 32 USB Revision: 3.2 Gen1×1 Max Ports: 4

[Edit/Modify Supported Features]

Supported x86 Extensions & Processor Features

MMX MMX Extension EMMX Extended MMX Extension SSE Streaming SIMD Extensions SSE2 Streaming SIMD Extensions 2 SSE3 Streaming SIMD Extensions 3 SSSE3 Supplemental SSE3 SSE4.1 Streaming SIMD Extensions 4.1 SSE4.2 Streaming SIMD Extensions 4.2 SSE4a Streaming SIMD Extensions 4a GFNI SSE Galois Field New Instructions AVX Advanced Vector Extensions AVX+GFNI AVX Galois Field New Instructions AVX2 Advanced Vector Extensions 2 AVX-512 Advanced Vector 512-bit AVX512F AVX-512 Foundation AVX512CD AVX-512 Conflict Detection AVX512BW AVX-512 Byte and Word AVX512DQ AVX-512 Doubleword and Quadword Instructions AVX512VL AVX-512 Vector Length AVX512_IFMA AVX-512 Integer Fused Multiply-Add AVX512_VBMI AVX-512 Vector Bit Manipulation Instructions AVX512_VNNI AVX-512 Vector Neural Network Instructions AVX512_VPOPCNTDQ AVX-512 Vector Population Count Doubleword and Quadword AVX512F+GFNI AVX-512 Galois Field New Instructions AVX512F+VAES AVX-512 Vector AES Instructions AVX512_VBMI2 AVX-512 Vector Bit Manipulation Instructions 2 AVX512_BITALG AVX-512 Bit Algorithms AVX512F+VPCLMULQDQ Vector Carry-Less Multiplication of Quadwords AVX512_BF16 AVX-512 BFloat16 Instructions ABM Advanced Bit Manipulation BMI1 Bit Manipulation Instruction Set 1 BMI2 Bit Manipulation Instruction Set 2 FMA3 3-Operand Fused-Multiply-Add AES AES Encryption Instructions RdRand Hardware RNG SHA SHA Extensions ADX Multi-Precision Add-Carry CLMUL Carry-less Multiplication Extension F16C 16-bit Floating Point Conversion x86-16 16-bit x86 x86-32 32-bit x86 x86-64 64-bit x86 Real Real Mode Protected Protected Mode SMM System Management Mode FPU Integrated x87 FPU NX No-eXecute SMT Simultaneous Multithreading AMD-Vi AMD-Vi (I/O MMU virtualization) AMD-V AMD Virtualization SME Secure Memory Encryption TSME Transparent SME SEV Secure Encrypted Virtualization SenseMI SenseMI Technology

Bibliography[edit]

• "AMD Processor Specifications". AMD.com. Retrieved February 2023.
• "AMD EPYC™ 9474F". AMD.com. Retrieved February 2023.
• "Revision Guide for AMD Family 19h Models 10h-1Fh Processors", AMD Publ. #57095, Rev. 1.00, December 9, 2022