Xeon Gold 6256 vs Gold 6126

Primary details

Comparing Xeon Gold 6126 and Xeon Gold 6256 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	606	125
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	19.71	12.63
Market segment	Server	Server
Series	Intel Xeon Gold	no data
Architecture codename	Skylake (server) (2017−2019)	no data
Release date	25 April 2017 (7 years ago)	1 January 2020 (4 years ago)
Launch price (MSRP)	$1,776	no data
Current price	$310 (0.2x MSRP)	$3936

Cost-effectiveness evaluation

Performance per price, higher is better.

Xeon Gold 6126 has 56% better value for money than Xeon Gold 6256.

Detailed specifications

Xeon Gold 6126 and Xeon Gold 6256 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)	12 (Dodeca-Core)
Threads	24	24
Base clock speed	2.6 GHz	3.6 GHz
Boost clock speed	3.7 GHz	4.5 GHz
Bus support	4 × 8 GT/s	no data
L1 cache	768 KB	no data
L2 cache	12 MB	no data
L3 cache	19.25 MB	33 MB
Chip lithography	14 nm	14 nm
Maximum core temperature	86 °C	64 °C
64 bit support	+	-
Windows 11 compatibility	+	+
Unlocked multiplier	No	No

Compatibility

Information on Xeon Gold 6126 and Xeon Gold 6256 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	4 (Multiprocessor)	no data
Socket	FCLGA3647	FCLGA3647
Power consumption (TDP)	125 Watt	205 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon Gold 6126 and Xeon Gold 6256. 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® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512
AES-NI	+	+
AVX	+	no data
vPro	+	no data
Enhanced SpeedStep (EIST)	+	+
Speed Shift	+	+
Turbo Boost Technology	2.0	2.0
Hyper-Threading Technology	+	+
TSX	+	+
Turbo Boost Max 3.0	-	-
Status	Launched	Launched

Security technologies

Xeon Gold 6126 and Xeon Gold 6256 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon Gold 6126 and Xeon Gold 6256 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon Gold 6126 and Xeon Gold 6256. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-2666	DDR4-2933
Maximum memory size	768 GB	1 TB
Max memory channels	6	6
Maximum memory bandwidth	128.001 GB/s	no data
ECC memory support	+	+

Peripherals

Specifications and connection of peripherals supported by Xeon Gold 6126 and Xeon Gold 6256.

PCIe version	3.0	3.0
PCI Express lanes	48	48

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

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Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

Gold 6256 outperforms Gold 6126 by 154% based on our aggregate benchmark results.

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Pros & cons summary

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Performance score	11.92	30.24
Recency	25 April 2017	1 January 2020
Power consumption (TDP)	125 Watt	205 Watt

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Should you still have questions on choice between Xeon Gold 6126 and Xeon Gold 6256, ask them in Comments section, and we shall answer.

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