EPYC Embedded 3401 - AMD

	Edit Values
	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
Frequency	1,850 MHz
Turbo Frequency	3,000 MHz (1 core)
Clock multiplier	18.5
	Microarchitecture
ISA	x86-64 (x86)
Microarchitecture	Zen
Core Name	Snowy Owl
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
	Template:packages/amd/package sp4

EPYC Embedded 3401 is a 64-bit hexadeca-core x86 embedded microprocessor introduced by AMD in early 2018 for dense servers and edge devices. Fabricated on a 14 nm process based on the Zen microarchitecture, this chip operates at 1.85 GHz with a TDP of 85 W and a turbo frequency of up to 3 GHz. The 3401 supports up to 1 TiB of quad-channel DDR4-2666 ECC memory.

Preliminary Data! Information presented in this article deal with a microprocessor or chip that was recently announced or leaked, thus missing information regarding its features and exact specification. Information may be incomplete and can change by final release.

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$

1.5 MiB

1,536 KiB
1,572,864 B

L1I$	1 MiB 1,024 KiB 1,048,576 B	16x64 KiB	4-way set associative
L1D$	512 KiB 524,288 B 0.5 MiB	16x32 KiB	8-way set associative	write-back

L2$

8 MiB

8,192 KiB
8,388,608 B
0.00781 GiB

		16x512 KiB	8-way set associative	write-back

L3$

32 MiB

32,768 KiB
33,554,432 B
0.0313 GiB

		4x8 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	79.47 GiB/s 81,377.28 MiB/s 85.33 GB/s 85,330.263 MB/s 0.0776 TiB/s 0.0853 TB/s
Bandwidth	Single 19.87 GiB/s Double 39.74 GiB/s Quad 79.47 GiB/s

[Edit] Official AMD Supported Memory Configurations
Quad Channel	Single Rank	1 DIMM per channel	4 of 8	DDR4-2666
	Single Rank	2 DIMMs per channel	8 of 8	DDR4-2133
	Dual Rank	1 DIMM per channel	4 of 8	DDR4-2400
	Dual Rank	2 DIMMs per channel	8 of 8	DDR4-1866

Has subobject "Has subobject" is a predefined property representing a container construct and is provided by Semantic MediaWiki.	EPYC Embedded 3401 - AMD#pcie +
base frequency	1,850 MHz (1.85 GHz, 1,850,000 kHz) +
clock multiplier	18.5 +
core count	16 +
core family	23 +
core model	1 +
core name	Snowy Owl +
core stepping	B2 +
cpuid	0x00800F12 +
designer	AMD +
die area	213 mm² (0.33 in², 2.13 cm², 213,000,000 µm²) +
die count	2 +
family	EPYC Embedded +
first announced	February 21, 2018 +
first launched	February 21, 2018 +
full page name	amd/epyc embedded/3401 +
has advanced vector extensions	true +
has advanced vector extensions 2	true +
has amd amd-v technology	true +
has amd amd-vi technology	true +
has amd secure encrypted virtualization technology	true +
has amd secure memory encryption technology	true +
has amd sensemi technology	true +
has amd transparent secure memory encryption technology	true +
has ecc memory support	true +
has feature	Advanced Vector Extensions +, Advanced Vector Extensions 2 +, Advanced Encryption Standard Instruction Set Extension + and SenseMI Technology +
has locked clock multiplier	true +
has x86 advanced encryption standard instruction set extension	true +
instance of	microprocessor +
is multi-chip package	true +
isa	x86-64 +
isa family	x86 +
l1$ size	1,536 KiB (1,572,864 B, 1.5 MiB) +
l1d$ description	8-way set associative +
l1d$ size	512 KiB (524,288 B, 0.5 MiB) +
l1i$ description	4-way set associative +
l1i$ size	1,024 KiB (1,048,576 B, 1 MiB) +
l2$ description	8-way set associative +
l2$ size	8 MiB (8,192 KiB, 8,388,608 B, 0.00781 GiB) +
l3$ description	16-way set associative +
l3$ size	32 MiB (32,768 KiB, 33,554,432 B, 0.0313 GiB) +
ldate	February 21, 2018 +
manufacturer	GlobalFoundries +
market segment	Server + and Embedded +
max cpu count	1 +
max junction temperature	378.15 K (105 °C, 221 °F, 680.67 °R) +
max memory	1,048,576 MiB (1,073,741,824 KiB, 1,099,511,627,776 B, 1,024 GiB, 1 TiB) +
max memory bandwidth	79.47 GiB/s (81,377.029 MiB/s, 85.33 GB/s, 85,330 MB/s, 0.0776 TiB/s, 0.0853 TB/s) +
max memory channels	4 +
max sata ports	16 +
max usb ports	4 +
microarchitecture	Zen +
min junction temperature	273.15 K (0 °C, 32 °F, 491.67 °R) +
model number	3401 +
name	EPYC Embedded 3401 +
package	BGA-2028 +
process	14 nm (0.014 μm, 1.4e-5 mm) +
series	3000 +
smp max ways	1 +
supported memory type	DDR4-2666 +
tdp	85 W (85,000 mW, 0.114 hp, 0.085 kW) +
technology	CMOS +
thread count	16 +
transistor count	9,600,000,000 +
turbo frequency (16 cores)	2,250 MHz (2.25 GHz, 2,250,000 kHz) +
turbo frequency (1 core)	3,000 MHz (3 GHz, 3,000,000 kHz) +
word size	64 bit (8 octets, 16 nibbles) +

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Memory controller