Xeon w9-3475X vs EPYC 7643

General info

Comparing EPYC 7643 and Xeon w9-3475X processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	31	49
Place by popularity	not in top-100	not in top-100
Value for money	3.31	17.77
Market segment	Server	Server
Series	AMD EPYC	no data
Architecture codename	Milan (2021)	Sapphire Rapids
Release date	15 March 2021 (3 years ago)	1 January 2023 (1 year ago)
Launch price (MSRP)	$4,995	no data
Current price	$8164 (1.6x MSRP)	$3918

Value for money

Performance per price, higher is better.

Xeon w9-3475X has 437% better value for money than EPYC 7643.

Technical specs

EPYC 7643 and Xeon w9-3475X 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	48 (Octatetraconta-Core)	36
Threads	96	72
Base clock speed	2.3 GHz	2.2 GHz
Boost clock speed	3.6 GHz	4.8 GHz
L1 cache	64 KB (per core)	80K (per core)
L2 cache	512 KB (per core)	2 MB (per core)
L3 cache	256 MB (shared)	82.5 MB
Chip lithography	7 nm+	Intel 7 nm
Die size	8x 81 mm2	4x 477 mm2
Maximum core temperature	no data	74 °C
Maximum case temperature (TCase)	no data	74 °C
Number of transistors	33,200 million	no data
64 bit support	+	+
Windows 11 compatibility	+	+
Unlocked multiplier	Yes	Yes

Compatibility

Information on EPYC 7643 and Xeon w9-3475X 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	2	1
Socket	SP3	FCLGA4677
Power consumption (TDP)	225 Watt	300 Watt

Technologies and extensions

Technological solutions and additional instructions supported by EPYC 7643 and Xeon w9-3475X. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	Intel® SSE4.1, Intel® AMX, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512
AES-NI	+	+
AVX	+	+
vPro	no data	+
Enhanced SpeedStep (EIST)	no data	+
Speed Shift	no data	+
Turbo Boost Technology	no data	2.0
Hyper-Threading Technology	no data	+
TSX	no data	+
Turbo Boost Max 3.0	no data	+
Status	no data	Launched

Security technologies

EPYC 7643 and Xeon w9-3475X technologies aimed at improving security, for example, by protecting against hacks.

TXT	no data	+
EDB	no data	+
SGX	no data	-
OS Guard	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by EPYC 7643 and Xeon w9-3475X are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by EPYC 7643 and Xeon w9-3475X. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-3200	DDR5-4800
Maximum memory size	4 TiB	4 TB
Max memory channels	no data	8
Maximum memory bandwidth	204.795 GB/s	no data
ECC memory support	no data	+

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

N/A

no data

Peripherals

Specifications and connection of peripherals supported by EPYC 7643 and Xeon w9-3475X.

PCIe version	4.0	5.0
PCI Express lanes	128	112

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

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Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

EPYC 7643 outperforms Xeon w9-3475X by 17% based on our aggregated benchmark results.

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Advantages and disadvantages

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Performance score	49.03	41.93
Recency	15 March 2021	1 January 2023
Physical cores	48	36
Threads	96	72
Power consumption (TDP)	225 Watt	300 Watt

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Should you still have questions on choice between EPYC 7643 and Xeon w9-3475X, ask them in Comments section, and we shall answer.

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