Xeon Gold 6438Y vs EPYC 7773X

Primary details

Comparing EPYC 7773X and Xeon Gold 6438Y processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	21	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Server	Server
Power efficiency	19.46	no data
Architecture codename	Milan-X (2022)	no data
Release date	22 March 2022 (2 years ago)	1 January 2023 (1 year ago)

Detailed specifications

EPYC 7773X and Xeon Gold 6438Y 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	64 (Tetrahexaconta-Core)	32 (Dotriaconta-Core)
Threads	128	64
Base clock speed	2.2 GHz	2 GHz
Boost clock speed	3.5 GHz	4 GHz
L1 cache	64K (per core)	no data
L2 cache	512K (per core)	no data
L3 cache	768 MB (shared)	60 MB
Chip lithography	7 nm	Intel 7 nm
Die size	8x 81 mm2	no data
Maximum core temperature	no data	76 °C
Number of transistors	33,200 million	no data
64 bit support	-	-

Compatibility

Information on EPYC 7773X and Xeon Gold 6438Y 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	no data
Socket	SP3	FCLGA4677
Power consumption (TDP)	280 Watt	205 Watt

Technologies and extensions

Technological solutions and additional instructions supported by EPYC 7773X and Xeon Gold 6438Y. 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	+	-
Speed Shift	no data	+
Turbo Boost Technology	no data	2.0
Hyper-Threading Technology	no data	+
TSX	-	+
Precision Boost 2	+	no data
Deep Learning Boost	-	+

Security technologies

EPYC 7773X and Xeon Gold 6438Y 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 7773X and Xeon Gold 6438Y 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 7773X and Xeon Gold 6438Y. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-3200	DDR5-4800, DDR5-4400
Maximum memory size	no data	4 TB
Max memory channels	no data	8
ECC memory support	-	+

Peripherals

Specifications and connection of peripherals supported by EPYC 7773X and Xeon Gold 6438Y.

PCIe version	4.0	5
PCI Express lanes	128	80

Pros & cons summary

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Recency	22 March 2022	1 January 2023
Physical cores	64	32
Threads	128	64
Power consumption (TDP)	280 Watt	205 Watt

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Should you still have questions on choice between EPYC 7773X and Xeon Gold 6438Y, ask them in Comments section, and we shall answer.

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