Xeon w7-2555X vs EPYC 7643

Primary details

Comparing EPYC 7643 and Xeon w7-2555X 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)	24 August 2024 (less than a year ago)
Launch price (MSRP)	$4,995	$1,069

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

EPYC 7643 and Xeon w7-2555X 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)	14 (Tetradeca-Core)
Threads	96	28
Base clock speed	2.3 GHz	3.3 GHz
Boost clock speed	3.6 GHz	4.8 GHz
Multiplier	23	no data
L1 cache	3 MB	80 KB (per core)
L2 cache	24 MB	2 MB (per core)
L3 cache	256 MB (shared)	33.75 MB
Chip lithography	7 nm+	10 nm
Die size	8x 81 mm2	no data
Maximum case temperature (TCase)	no data	75 °C
Number of transistors	33,200 million	no data
64 bit support	+	+
Windows 11 compatibility	+	no data
Unlocked multiplier	-	+

Compatibility

Information on EPYC 7643 and Xeon w7-2555X 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	4677
Power consumption (TDP)	225 Watt	210 Watt

Technologies and extensions

Technological solutions and additional instructions supported by EPYC 7643 and Xeon w7-2555X. You'll probably need this information if you require some particular technology.

AES-NI	+	+
AVX	+	+
vPro	no data	+
Enhanced SpeedStep (EIST)	no data	+
TSX	-	+

Security technologies

EPYC 7643 and Xeon w7-2555X technologies aimed at improving security, for example, by protecting against hacks.

TXT

no data

+

Virtualization technologies

Virtual machine speed-up technologies supported by EPYC 7643 and Xeon w7-2555X are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by EPYC 7643 and Xeon w7-2555X. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-3200	DDR5
Maximum memory size	4 TiB	no data
Maximum memory bandwidth	204.795 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

N/A

N/A

Peripherals

Specifications and connection of peripherals supported by EPYC 7643 and Xeon w7-2555X.

PCIe version	4.0	5.0
PCI Express lanes	128	64

Pros & cons summary

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Recency	12 January 2021	24 August 2024
Physical cores	48	14
Threads	96	28
Chip lithography	7 nm	10 nm
Power consumption (TDP)	225 Watt	210 Watt

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Should you still have questions on choice between EPYC 7643 and Xeon w7-2555X, ask them in Comments section, and we shall answer.

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