Xeon E-2456 vs Ultra 7 155U

Primary details

Comparing Core Ultra 7 155U and Xeon E-2456 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	733	469
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	93.11
Market segment	Laptop	Server
Series	Intel Meteor Lake-U	no data
Power efficiency	66.69	17.70
Architecture codename	Meteor Lake-P (2023)	Raptor Lake-S (2023−2024)
Release date	14 December 2023 (less than a year ago)	14 December 2023 (less than a year ago)
Launch price (MSRP)	$490	$375

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core Ultra 7 155U 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	14	12
Base clock speed	1.7 GHz	3.3 GHz
Boost clock speed	4.8 GHz	5.1 GHz
Bus rate	no data	16 GT/s
L1 cache	112 KB (per core)	80 KB (per core)
L2 cache	2 MB (per core)	1.25 MB (per core)
L3 cache	12 MB (shared)	18 MB (shared)
Chip lithography	Intel 4 nm	Intel 7 nm
Die size	no data	163 mm2
Maximum core temperature	110 °C	100 °C
64 bit support	+	+

Compatibility

Information on Core Ultra 7 155U 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	FCBGA2049	FCLGA1700
Power consumption (TDP)	15 Watt	80 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core Ultra 7 155U and Xeon E-2456. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI	+	+
AVX	+	+
vPro	+	no data
Enhanced SpeedStep (EIST)	+	+
Speed Shift	+	no data
Turbo Boost Technology	no data	2
Hyper-Threading Technology	+	+
TSX	+	-
Idle States	no data	+
Thermal Monitoring	+	+
Flex Memory Access	+	no data
Turbo Boost Max 3.0	-	-
Deep Learning Boost	+	-
Supported AI Software Frameworks	OpenVINO™, WindowsML, ONNX RT	-

Security technologies

Core Ultra 7 155U 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 Core Ultra 7 155U and Xeon E-2456 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core Ultra 7 155U and Xeon E-2456. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR5	DDR5-4800
Maximum memory size	96 GB	128 GB
Max memory channels	2	2
ECC memory support	-	+

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel® Graphics	N/A
Quick Sync Video	+	-
Graphics max frequency	1.95 GHz	no data

Graphics interfaces

Available interfaces and connections of Core Ultra 7 155U and Xeon E-2456 integrated GPUs.

Number of displays supported

4

no data

Graphics image quality

Maximum display resolutions supported by Core Ultra 7 155U and Xeon E-2456 integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4	4096 x 2304 @ 60Hz (HDMI 2.1 TMDS) 7680 x 4320 @ 60Hz (HDMI2.1 FRL)	no data
Max resolution over eDP	3840x2400 @ 120Hz	no data
Max resolution over DisplayPort	7680 x 4320 @ 60Hz	no data

Graphics API support

APIs supported by Core Ultra 7 155U and Xeon E-2456 integrated GPUs, sometimes API versions are included.

DirectX	12.2	no data
OpenGL	4.6	no data

Peripherals

Specifications and connection of peripherals supported by Core Ultra 7 155U and Xeon E-2456.

PCIe version	4.0	5
PCI Express lanes	12	16
PCI support	4.0	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.

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Pros & cons summary

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Performance score	10.57	14.96
Physical cores	12	6
Threads	14	12
Power consumption (TDP)	15 Watt	80 Watt

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Should you still have questions on choice between Core Ultra 7 155U and Xeon E-2456, ask them in Comments section, and we shall answer.

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