Xeon E-2456 vs D-1557

Primary details

Comparing Xeon D-1557 and Xeon E-2456 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	1038	434
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.67	no data
Market segment	Server	Server
Series	Intel Xeon D	no data
Architecture codename	Broadwell (2015−2019)	Raptor Lake-S
Release date	24 February 2016 (8 years ago)	14 December 2023 (less than a year ago)
Launch price (MSRP)	$694	no data
Current price	$1395 (2x MSRP)	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Xeon D-1557 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	1.5 GHz	3.3 GHz
Boost clock speed	2.1 GHz	5.1 GHz
L1 cache	64K (per core)	80 KB (per core)
L2 cache	256K (per core)	1.25 MB (per core)
L3 cache	1.5 MB (per core)	18 MB (shared)
Chip lithography	14 nm	Intel 7 nm
Die size	306.18 mm2	163 mm2
Maximum core temperature	no data	100 °C
Maximum case temperature (TCase)	80 °C	no data
Number of transistors	3,200 million	no data
64 bit support	+	+
Windows 11 compatibility	-	no data
Unlocked multiplier	No	No

Compatibility

Information on Xeon D-1557 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	1
Socket	FCBGA1667	FCLGA1700
Power consumption (TDP)	45 Watt	80 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon D-1557 and Xeon E-2456. You'll probably need this information if you require some particular technology.

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

Security technologies

Xeon D-1557 and Xeon E-2456 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+
Secure Key	+	+
OS Guard	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon D-1557 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-1557 and Xeon E-2456. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4, DDR3	DDR5-4800
Maximum memory size	128 GB	128 GB
Max memory channels	2	2
Maximum memory bandwidth	34.124 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-1557 and Xeon E-2456.

PCIe version	2.0/3.0	5
PCI Express lanes	32	20
USB revision	2.0/3.0	no data
Total number of SATA ports	6	no data
Number of USB ports	8	no data
Integrated LAN	+	no data
UART	+	no data

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.

E-2456 outperforms D-1557 by 151% based on our aggregate benchmark results.

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Pros & cons summary

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Performance score	6.00	15.08
Recency	24 February 2016	14 December 2023
Physical cores	12	6
Threads	24	12
Power consumption (TDP)	45 Watt	80 Watt

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Should you still have questions on choice between Xeon D-1557 and Xeon E-2456, ask them in Comments section, and we shall answer.

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