Xeon Gold 6438M vs Gold 6338T

Primary details

Comparing Xeon Gold 6338T and Xeon Gold 6438M processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	not rated	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Server	Server
Architecture codename	Ice Lake-SP (2021)	Sapphire Rapids
Release date	6 April 2021 (3 years ago)	10 January 2023 (1 year ago)
Current price	$6534	no data

Detailed specifications

Xeon Gold 6338T 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	24 (Tetracosa-Core)	32 (Dotriaconta-Core)
Threads	48	64
Base clock speed	2.1 GHz	2.2 GHz
Boost clock speed	3.4 GHz	3.9 GHz
L1 cache	64K (per core)	80K (per core)
L2 cache	1 MB (per core)	2 MB (per core)
L3 cache	36 MB (shared)	60 MB
Chip lithography	10 nm	Intel 7 nm
Maximum core temperature	87 °C	85 °C
Maximum case temperature (TCase)	87 °C	85 °C
64 bit support	+	+
Windows 11 compatibility	+	no data
Unlocked multiplier	No	No

Compatibility

Information on Xeon Gold 6338T 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	2	2
Socket	FCLGA4189	FCLGA4677
Power consumption (TDP)	165 Watt	205 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon Gold 6338T 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	+	+
Enhanced SpeedStep (EIST)	+	+
Speed Shift	+	+
Turbo Boost Technology	2.0	2.0
Hyper-Threading Technology	+	+
TSX	+	+
Status	Launched	Launched

Security technologies

Xeon Gold 6338T and Xeon Gold 6438M technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon Gold 6338T 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 6338T and Xeon Gold 6438M. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-3200	DDR5-4800, DDR5-4400
Maximum memory size	6 TB	4 TB
Max memory channels	8	8
ECC memory support	+	+

Peripherals

Specifications and connection of peripherals supported by Xeon Gold 6338T and Xeon Gold 6438M.

PCIe version	4.0	5
PCI Express lanes	64	80

Pros & cons summary

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Recency	6 April 2021	10 January 2023
Physical cores	24	32
Threads	48	64
Power consumption (TDP)	165 Watt	205 Watt

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Should you still have questions on choice between Xeon Gold 6338T and Xeon Gold 6438M, ask them in Comments section, and we shall answer.

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