Xeon E-2456 vs D-2166NT

Primary details

Comparing Xeon D-2166NT and Xeon E-2456 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	795	465
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	7.83	92.68
Market segment	Server	Server
Series	Intel Xeon D	no data
Power efficiency	10.59	17.68
Architecture codename	Skylake (server) (2017−2019)	Raptor Lake-S (2023−2024)
Release date	7 February 2018 (6 years ago)	14 December 2023 (less than a year ago)
Launch price (MSRP)	$1,005	$375

Cost-effectiveness evaluation

Performance per price, higher is better.

Xeon E-2456 has 1084% better value for money than Xeon D-2166NT.

Detailed specifications

Xeon D-2166NT and Xeon E-2456 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)	6 (Hexa-Core)
Threads	24	12
Base clock speed	2 GHz	3.3 GHz
Boost clock speed	3 GHz	5.1 GHz
Bus type	DMI 3.0	no data
Bus rate	4 × 8 GT/s	16 GT/s
Multiplier	20	no data
L1 cache	768 KB	80 KB (per core)
L2 cache	12 MB	1.25 MB (per core)
L3 cache	16.5 MB	18 MB (shared)
Chip lithography	14 nm	Intel 7 nm
Die size	no data	163 mm2
Maximum core temperature	no data	100 °C
64 bit support	+	+
Windows 11 compatibility	-	no data

Compatibility

Information on Xeon D-2166NT and Xeon E-2456 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	1 (Uniprocessor)	1
Socket	FCBGA2518	FCLGA1700
Power consumption (TDP)	85 Watt	80 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon D-2166NT and Xeon E-2456. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® AVX2, Intel® AVX-512	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI	+	+
AVX	+	+
vPro	+	no data
Enhanced SpeedStep (EIST)	+	+
QuickAssist	+	no data
Turbo Boost Technology	2.0	2
Hyper-Threading Technology	+	+
TSX	+	-
Idle States	+	+
Thermal Monitoring	+	+
Turbo Boost Max 3.0	-	-

Security technologies

Xeon D-2166NT and Xeon E-2456 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+
Secure Key	+	+
MPX	+	-
SGX	-	no data
OS Guard	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon D-2166NT and Xeon E-2456 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon D-2166NT and Xeon E-2456. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4	DDR5-4800
Maximum memory size	512 GB	128 GB
Max memory channels	4	2
Maximum memory bandwidth	85.33 GB/s	no data
ECC memory support	+	+

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

no data

N/A

Peripherals

Specifications and connection of peripherals supported by Xeon D-2166NT and Xeon E-2456.

PCIe version	3.0	5
PCI Express lanes	32	16

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.

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Pros & cons summary

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Performance score	9.87	15.51
Recency	7 February 2018	14 December 2023
Physical cores	12	6
Threads	24	12
Power consumption (TDP)	85 Watt	80 Watt

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Should you still have questions on choice between Xeon D-2166NT and Xeon E-2456, ask them in Comments section, and we shall answer.

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