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EPYC Embedded 3401
General Info
Designer	AMD
Manufacturer	GlobalFoundries
Model Number	3401
Market	Server, Embedded
Introduction	February 21, 2018 (announced) February 21, 2018 (launched)
Shop	Amazon
General Specs
Family	EPYC Embedded
Series	3000
Locked	Yes
Frequency	1,850 MHz
Turbo Frequency	3,000 MHz (1 core), 2,250 MHz (16 cores)
Clock multiplier	18.5
CPUID	0x00800F12
Microarchitecture
ISA	x86-64 (x86)
Microarchitecture	Zen
Core Name	Snowy Owl
Core Family	23
Core Model	1
Core Stepping	B2
Process	14 nm
Transistors	9,600,000,000
Technology	CMOS
Die	213 mm²
MCP	Yes (2 dies)
Word Size	64 bit
Cores	16
Threads	16
Max Memory	1 TiB
Multiprocessing
Max SMP	1-Way (Uniprocessor)
Electrical
TDP	85 W
Tjunction	0 °C – 105 °C
Packaging
Package	SP4 (FC-OBGA)
Dimension	45 mm × 45 mm
Pitch	0.8 mm

EPYC Embedded 3401 is a 64-bit 16-core x86 embedded microprocessor introduced by AMD in early 2018 for dense servers and edge devices. This multi-chip processor has CPU cores based on the Zen microarchitecture and is fabricated on a GlobalFoundries 14 nm process. It operates at 1.85 GHz with a TDP of 85 W and a turbo frequency of up to 3.0 GHz. The 3401 supports up to 1 TiB of quad-channel DDR4-2666 memory.

This model was apparently canceled.

Cache

Main article: Zen § 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$ 1536 KiB 1,572,864 B 1.5 MiB L1I$ 1 MiB 1,024 KiB 1,048,576 B 16 × 64 KiB 4-way set associative   L1D$ 512 KiB 524,288 B 0.5 MiB 16 × 32 KiB 8-way set associative write-back L2$ 8 MiB 8,192 KiB 8,388,608 B 0.00781 GiB     16 × 512 KiB 8-way set associative write-back L3$ 32 MiB 32,768 KiB 33,554,432 B 0.0313 GiB     4 × 8 MiB 16-way set associative write-back

Memory controller

[Edit/Modify Memory Info]

	Integrated Memory Controller
	Max Type DDR4-2666 Supports ECC Yes Max Mem 1 TiB Controllers 4 Channels 4 Max Bandwidth 85.33 GB/s 79.47 GiB/s 81,377.029 MiB/s 85,330 MB/s 0.0776 TiB/s 0.0853 TB/s Bandwidth Single 21.33 GB/s Double 42.67 GB/s Quad 85.33 GB/s

Expansions

The EPYC Embedded 3401 integrates four 8-port, 16-lane PCIe Gen 1/2/3 (8 GT/s) controllers. All lanes are configurable as x16/x8/x4/x2/x1 wide (e.g. 1x4 + 4x1 + 1x8) PCIe links, some lanes alternatively as SATA Gen 1/2/3 (6 Gb/s) or 10 Gbit/s Ethernet ports. Up to sixteen SATA ports and eight GbE ports are available on this model, as well as four USB 3.1 Gen 1 (5 Gb/s) ports, and the following low speed interfaces: eMMC, UART, LPC, SPI/eSPI, I²C, SMBus, GPIO.

[Edit/Modify Expansions Info]

	Expansion Options
PCIe Revision: 3.0 Max Lanes: 64 Configuration: x16, x8, x4, x2, x1 USB Revision: 3.1 Max Ports: 4 SATA Revision: 3.0 Max Ports: 16

[Edit/Modify Network Info]

	Networking
	Ethernet 10GbE Yes (Ports: 8)

Features

[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 AVX Advanced Vector Extensions AVX2 Advanced Vector Extensions 2 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 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

• "Product Brief: AMD EPYC™ Embedded 3000 Family", AMD Publ. #1887102, 2018
• "Product Brief: AMD EPYC™ Embedded 3000 Family", AMD Publ. #1887102, Rev. E, 2019
• "Embedded Processor Specifications". AMD.com. Retrieved October 2020.