EPYC 7643 vs Xeon Platinum 8170

Primary details

Comparing Xeon Platinum 8170 and EPYC 7643 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	not rated	38
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	6.32
Market segment	Server	Server
Series	Intel Xeon Platinum	AMD EPYC
Power efficiency	no data	20.14
Architecture codename	Skylake (server) (2017−2019)	Milan (2021−2023)
Release date	25 April 2017 (7 years ago)	12 January 2021 (3 years ago)
Launch price (MSRP)	$7,405	$4,995

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Xeon Platinum 8170 and EPYC 7643 basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores	26 (Hexacosa-Core)	48 (Octatetraconta-Core)
Threads	52	96
Base clock speed	2.1 GHz	2.3 GHz
Boost clock speed	3.7 GHz	3.6 GHz
Multiplier	21	23
L1 cache	1.625 MB	3 MB
L2 cache	26 MB	24 MB
L3 cache	35.75 MB	256 MB (shared)
Chip lithography	14 nm	7 nm+
Die size	no data	8x 81 mm2
Maximum core temperature	89 °C	no data
Number of transistors	no data	33,200 million
64 bit support	+	+
Windows 11 compatibility	+	+

Compatibility

Information on Xeon Platinum 8170 and EPYC 7643 compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration	8 (Multiprocessor)	2
Socket	FCLGA3647	SP3
Power consumption (TDP)	165 Watt	225 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon Platinum 8170 and EPYC 7643. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512	no data
AES-NI	+	+
AVX	+	+
vPro	+	no data
Enhanced SpeedStep (EIST)	+	no data
Speed Shift	+	no data
Turbo Boost Technology	2.0	no data
Hyper-Threading Technology	+	no data
TSX	+	-
Turbo Boost Max 3.0	-	no data

Security technologies

Xeon Platinum 8170 and EPYC 7643 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	no data
EDB	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon Platinum 8170 and EPYC 7643 are enumerated here.

AMD-V	-	+
VT-d	+	no data
VT-x	+	no data
EPT	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon Platinum 8170 and EPYC 7643. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-2666	DDR4-3200
Maximum memory size	768 GB	4 TiB
Max memory channels	6	no data
Maximum memory bandwidth	128.001 GB/s	204.795 GB/s
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

no data

N/A

Peripherals

Specifications and connection of peripherals supported by Xeon Platinum 8170 and EPYC 7643.

PCIe version	3.0	4.0
PCI Express lanes	48	128

Pros & cons summary

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Recency	25 April 2017	12 January 2021
Physical cores	26	48
Threads	52	96
Chip lithography	14 nm	7 nm
Power consumption (TDP)	165 Watt	225 Watt

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