Xeon w5-2555X vs i7-1255U

Primary details

Comparing Core i7-1255U and Xeon w5-2555X processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	869	119
Place by popularity	45	not in top-100
Market segment	Laptop	Server
Series	Intel Alder Lake-M	no data
Power efficiency	54.04	12.27
Architecture codename	Alder Lake-U (2022)	no data
Release date	23 February 2022 (2 years ago)	1 July 2024 (less than a year ago)

Detailed specifications

Core i7-1255U and Xeon w5-2555X 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	10 (Deca-Core)	14 (Tetradeca-Core)
Threads	12	28
Base clock speed	1.7 GHz	3.3 GHz
Boost clock speed	4.7 GHz	4.8 GHz
L1 cache	80K (per core)	no data
L2 cache	1.25 MB (per core)	no data
L3 cache	12 MB (shared)	33.75 MB Intel® Smart Cache
Chip lithography	Intel 7 nm	Intel 7 nm
Maximum core temperature	100 °C	75 °C
64 bit support	+	+
Windows 11 compatibility	+	no data
Unlocked multiplier	-	+

Compatibility

Information on Core i7-1255U and Xeon w5-2555X 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	FCBGA1744	FCLGA4677
Power consumption (TDP)	15 Watt	252 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-1255U and Xeon w5-2555X. 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® AMX, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512
AES-NI	+	+
FMA	+	-
AVX	+	-
Enhanced SpeedStep (EIST)	+	+
Speed Shift	+	+
Turbo Boost Technology	no data	2.0
Hyper-Threading Technology	+	+
TSX	+	+
Thermal Monitoring	+	-
Flex Memory Access	+	no data
Turbo Boost Max 3.0	no data	+
Deep Learning Boost	+	+

Security technologies

Core i7-1255U and Xeon w5-2555X technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-1255U and Xeon w5-2555X are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-1255U and Xeon w5-2555X. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4, DDR5	DDR5-4800
Maximum memory size	64 GB	2 TB
Max memory channels	2	4
ECC memory support	-	+

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel® Iris® Xe Graphics eligible	no data
Quick Sync Video	+	-
Graphics max frequency	1.25 GHz	no data
Execution Units	96	no data

Graphics interfaces

Available interfaces and connections of Core i7-1255U and Xeon w5-2555X integrated GPUs.

Number of displays supported

4

no data

Graphics image quality

Maximum display resolutions supported by Core i7-1255U and Xeon w5-2555X integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4	4096 x 2304 @ 60Hz	no data
Max resolution over eDP	4096 x 2304 @ 120Hz	no data
Max resolution over DisplayPort	7680 x 4320 @ 60Hz	no data

Graphics API support

APIs supported by Core i7-1255U and Xeon w5-2555X integrated GPUs, sometimes API versions are included.

DirectX	12.1	no data
OpenGL	4.6	no data

Peripherals

Specifications and connection of peripherals supported by Core i7-1255U and Xeon w5-2555X.

PCIe version	4.0	5.0
PCI Express lanes	20	64

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	8.89	33.92
Recency	23 February 2022	1 July 2024
Physical cores	10	14
Threads	12	28
Power consumption (TDP)	15 Watt	252 Watt

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Should you still have questions on choice between Core i7-1255U and Xeon w5-2555X, ask them in Comments section, and we shall answer.

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