Xeon Gold 6558Q vs Gold 6426Y

Primary details

Comparing Xeon Gold 6426Y and Xeon Gold 6558Q processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	208	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	43.15	no data
Market segment	Server	Server
Power efficiency	12.29	no data
Architecture codename	Sapphire Rapids (2023−2024)	no data
Release date	10 January 2023 (1 year ago)	1 October 2023 (1 year ago)
Launch price (MSRP)	$1,517	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Xeon Gold 6426Y and Xeon Gold 6558Q 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	16 (Hexadeca-Core)	32 (Dotriaconta-Core)
Threads	32	64
Base clock speed	2.5 GHz	3.2 GHz
Boost clock speed	4.1 GHz	4.1 GHz
L1 cache	80K (per core)	no data
L2 cache	2 MB (per core)	no data
L3 cache	37.5 MB	60 MB
Chip lithography	Intel 7 nm	Intel 7 nm
Maximum core temperature	no data	66 °C
Maximum case temperature (TCase)	80 °C	no data
64 bit support	+	-

Compatibility

Information on Xeon Gold 6426Y and Xeon Gold 6558Q 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	FCLGA4677	FCLGA4677
Power consumption (TDP)	185 Watt	350 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon Gold 6426Y and Xeon Gold 6558Q. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® AMX, 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	+	-
Enhanced SpeedStep (EIST)	+	no data
Speed Shift	+	+
Turbo Boost Technology	2.0	2.0
Hyper-Threading Technology	+	+
TSX	+	+
Deep Learning Boost	+	+

Security technologies

Xeon Gold 6426Y and Xeon Gold 6558Q technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+
SGX	Yes with Intel® SPS	Yes with Intel® SPS
OS Guard	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon Gold 6426Y and Xeon Gold 6558Q are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon Gold 6426Y and Xeon Gold 6558Q. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR5-4800, DDR5-4400	DDR5-5200
Maximum memory size	4 TB	4 TB
Max memory channels	8	8
ECC memory support	+	+

Peripherals

Specifications and connection of peripherals supported by Xeon Gold 6426Y and Xeon Gold 6558Q.

PCIe version	5	5.0
PCI Express lanes	80	80

Pros & cons summary

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Recency	10 January 2023	1 October 2023
Physical cores	16	32
Threads	32	64
Power consumption (TDP)	185 Watt	350 Watt

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Should you still have questions on choice between Xeon Gold 6426Y and Xeon Gold 6558Q, ask them in Comments section, and we shall answer.

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