Xeon W-11855M vs Ultra 7 155H

Primary details

Comparing Core Ultra 7 155H and Xeon W-11855M processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	425	682
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Server
Series	Intel Meteor Lake-H	Intel Tiger Lake
Power efficiency	53.33	30.85
Architecture codename	Meteor Lake-H (2023)	Tiger Lake-H (2021)
Release date	14 December 2023 (less than a year ago)	11 May 2021 (3 years ago)
Launch price (MSRP)	$503	no data

Detailed specifications

Core Ultra 7 155H and Xeon W-11855M 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)	6 (Hexa-Core)
Threads	22	12
Base clock speed	3.8 GHz	3.2 GHz
Boost clock speed	4.8 GHz	4.9 GHz
Bus rate	no data	8 GT/s
L1 cache	112 KB (per core)	96K (per core)
L2 cache	2 MB (per core)	1.25 MB (per core)
L3 cache	24 MB (shared)	18 MB (shared)
Chip lithography	Intel 4 nm	10 nm SuperFin
Maximum core temperature	110 °C	100 °C
Maximum case temperature (TCase)	no data	72 °C
64 bit support	+	+
Windows 11 compatibility	no data	+

Compatibility

Information on Core Ultra 7 155H and Xeon W-11855M 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	FCBGA1787
Power consumption (TDP)	28 Watt	35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core Ultra 7 155H and Xeon W-11855M. 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, Intel® AVX-512
AES-NI	+	+
FMA	-	+
AVX	+	+
vPro	+	+
Enhanced SpeedStep (EIST)	+	+
Speed Shift	+	+
Hyper-Threading Technology	+	+
TSX	+	+
Thermal Monitoring	+	+
Flex Memory Access	+	+
SIPP	-	+
Turbo Boost Max 3.0	+	+
Deep Learning Boost	+	+
Supported AI Software Frameworks	OpenVINO™, WindowsML, ONNX RT	-

Security technologies

Core Ultra 7 155H and Xeon W-11855M technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Core Ultra 7 155H and Xeon W-11855M are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core Ultra 7 155H and Xeon W-11855M. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR5	DDR4
Maximum memory size	96 GB	128 GB
Max memory channels	2	2
Maximum memory bandwidth	no data	51.2 GB/s
ECC memory support	-	+

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel® Arc™ graphics	Intel® UHD Graphics for 11th Gen Intel® Processors
Quick Sync Video	+	+
Graphics max frequency	2.25 GHz	1.45 GHz
Execution Units	no data	32

Graphics interfaces

Available interfaces and connections of Core Ultra 7 155H and Xeon W-11855M integrated GPUs.

Number of displays supported

4

4

Graphics image quality

Maximum display resolutions supported by Core Ultra 7 155H and Xeon W-11855M 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)	4096x2304@60Hz
Max resolution over eDP	3840x2400 @ 120Hz	4096x2304@60Hz
Max resolution over DisplayPort	7680 x 4320 @ 60Hz	7680x4320@60Hz

Graphics API support

APIs supported by Core Ultra 7 155H and Xeon W-11855M integrated GPUs, sometimes API versions are included.

DirectX	12.2	12.1
OpenGL	4.6	4.6

Peripherals

Specifications and connection of peripherals supported by Core Ultra 7 155H and Xeon W-11855M.

PCIe version	5.0	4.0
PCI Express lanes	8	20
PCI support	5.0 and 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	15.78	11.41
Recency	14 December 2023	11 May 2021
Physical cores	16	6
Threads	22	12
Power consumption (TDP)	28 Watt	35 Watt

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Should you still have questions on choice between Core Ultra 7 155H and Xeon W-11855M, ask them in Comments section, and we shall answer.

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