Xeon Gold 6438M vs Gold 6256

Primary details

Comparing Xeon Gold 6256 and Xeon Gold 6438M processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	144	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Server	Server
Power efficiency	13.59	no data
Architecture codename	no data	Sapphire Rapids (2023−2024)
Release date	1 January 2020 (4 years ago)	10 January 2023 (1 year ago)
Launch price (MSRP)	no data	$3,273

Detailed specifications

Xeon Gold 6256 and Xeon Gold 6438M 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	12 (Dodeca-Core)	32 (Dotriaconta-Core)
Threads	24	64
Base clock speed	3.6 GHz	2.2 GHz
Boost clock speed	4.5 GHz	3.9 GHz
L1 cache	no data	80K (per core)
L2 cache	no data	2 MB (per core)
L3 cache	33 MB	60 MB
Chip lithography	14 nm	Intel 7 nm
Maximum core temperature	64 °C	no data
Maximum case temperature (TCase)	no data	85 °C
64 bit support	-	+
Windows 11 compatibility	+	no data

Compatibility

Information on Xeon Gold 6256 and Xeon Gold 6438M 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	no data	2
Socket	FCLGA3647	FCLGA4677
Power consumption (TDP)	205 Watt	205 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon Gold 6256 and Xeon Gold 6438M. You'll probably need this information if you require some particular technology.

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

Security technologies

Xeon Gold 6256 and Xeon Gold 6438M technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon Gold 6256 and Xeon Gold 6438M are enumerated here.

VT-d	+	+
VT-x	+	+
EPT	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon Gold 6256 and Xeon Gold 6438M. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-2933	DDR5-4800, DDR5-4400
Maximum memory size	1 TB	4 TB
Max memory channels	6	8
ECC memory support	+	+

Peripherals

Specifications and connection of peripherals supported by Xeon Gold 6256 and Xeon Gold 6438M.

PCIe version	3.0	5
PCI Express lanes	48	80

Pros & cons summary

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Recency	1 January 2020	10 January 2023
Physical cores	12	32
Threads	24	64

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