Xeon Gold 6454S vs EPYC 7643

Primary details

Comparing EPYC 7643 and Xeon Gold 6454S processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	39	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	6.32	no data
Market segment	Server	Server
Series	AMD EPYC	no data
Power efficiency	20.14	no data
Architecture codename	Milan (2021−2023)	Sapphire Rapids (2023−2024)
Release date	12 January 2021 (3 years ago)	10 January 2023 (1 year ago)
Launch price (MSRP)	$4,995	$3,157

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

EPYC 7643 and Xeon Gold 6454S 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)	32 (Dotriaconta-Core)
Threads	96	64
Base clock speed	2.3 GHz	2.2 GHz
Boost clock speed	3.6 GHz	3.4 GHz
Multiplier	23	no data
L1 cache	3 MB	80K (per core)
L2 cache	24 MB	2 MB (per core)
L3 cache	256 MB (shared)	60 MB
Chip lithography	7 nm+	Intel 7 nm
Die size	8x 81 mm2	4x 477 mm2
Maximum case temperature (TCase)	no data	71 °C
Number of transistors	33,200 million	no data
64 bit support	+	+
Windows 11 compatibility	+	no data

Compatibility

Information on EPYC 7643 and Xeon Gold 6454S 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	2
Socket	SP3	FCLGA4677
Power consumption (TDP)	225 Watt	270 Watt

Technologies and extensions

Technological solutions and additional instructions supported by EPYC 7643 and Xeon Gold 6454S. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	Intel® AMX, Intel® SSE4.2, Intel® AVX, 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	-	+
Deep Learning Boost	-	+

Security technologies

EPYC 7643 and Xeon Gold 6454S technologies aimed at improving security, for example, by protecting against hacks.

TXT	no data	+
EDB	no data	+
SGX	no data	Yes with Intel® SPS
OS Guard	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by EPYC 7643 and Xeon Gold 6454S 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 EPYC 7643 and Xeon Gold 6454S. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-3200	DDR5-4800, DDR5-4400
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	-	+

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 Gold 6454S.

PCIe version	4.0	5.0
PCI Express lanes	128	80

Pros & cons summary

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Recency	12 January 2021	10 January 2023
Physical cores	48	32
Threads	96	64
Power consumption (TDP)	225 Watt	270 Watt

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