EPYC 7643 vs Xeon Phi 7295

Primary details

Comparing Xeon Phi 7295 and EPYC 7643 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	not rated	39
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	6.37
Market segment	Server	Server
Series	Intel Xeon Phi	AMD EPYC
Power efficiency	no data	20.14
Architecture codename	Knights Mill (2017)	Milan (2021−2023)
Release date	18 December 2017 (6 years ago)	12 January 2021 (3 years ago)
Launch price (MSRP)	no data	$4,995

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Xeon Phi 7295 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	72 (Doheptaconta-Core)	48 (Octatetraconta-Core)
Threads	288	96
Base clock speed	1.5 GHz	2.3 GHz
Boost clock speed	1.6 GHz	3.6 GHz
Multiplier	15	23
L1 cache	4.5 MB	3 MB
L2 cache	36 MB	24 MB
L3 cache	0 KB (shared)	256 MB (shared)
Chip lithography	14 nm	7 nm+
Die size	no data	8x 81 mm2
Maximum core temperature	77 °C	no data
Number of transistors	8,000 million	33,200 million
64 bit support	+	+
Windows 11 compatibility	-	+
VID voltage range	0.550-1.2V	no data

Compatibility

Information on Xeon Phi 7295 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	1	2
Socket	SVLCLGA3647	SP3
Power consumption (TDP)	320 Watt	225 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon Phi 7295 and EPYC 7643. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® AVX-512	no data
AES-NI	+	+
AVX	+	+
Turbo Boost Technology	2.0	no data
Idle States	+	no data
Thermal Monitoring	+	-

Security technologies

Xeon Phi 7295 and EPYC 7643 technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	no data
EDB	+	no data
SGX	-	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon Phi 7295 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 Phi 7295 and EPYC 7643. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-2400	DDR4-3200
Maximum memory size	384 GB	4 TiB
Max memory channels	6	no data
Maximum memory bandwidth	115.212 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
Max video memory	1 GB	no data
Graphics max frequency	0 MHz	no data

Peripherals

Specifications and connection of peripherals supported by Xeon Phi 7295 and EPYC 7643.

PCIe version	3.0	4.0
PCI Express lanes	36	128

Pros & cons summary

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Recency	18 December 2017	12 January 2021
Physical cores	72	48
Threads	288	96
Chip lithography	14 nm	7 nm
Power consumption (TDP)	320 Watt	225 Watt

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