Ultra 7 155U vs Xeon D-1540

Place in the ranking	1055	731
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	2.80	no data
Market segment	Server	Laptop
Series	Intel Xeon D	Intel Meteor Lake-U
Power efficiency	13.27	66.63
Architecture codename	Broadwell (2015−2019)	Meteor Lake-P (2023)
Release date	9 March 2015 (9 years ago)	14 December 2023 (less than a year ago)
Launch price (MSRP)	$581	$490

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Xeon D-1540 and Core Ultra 7 155U 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	8 (Octa-Core)	12 (Dodeca-Core)
Threads	16	14
Base clock speed	2 GHz	1.7 GHz
Boost clock speed	2.6 GHz	4.8 GHz
Bus type	DMI 2.0	no data
Multiplier	20	no data
L1 cache	512 KB	112 KB (per core)
L2 cache	2 MB	2 MB (per core)
L3 cache	12 MB	12 MB (shared)
Chip lithography	14 nm	Intel 4 nm
Die size	246.24 mm²	no data
Maximum core temperature	no data	110 °C
Maximum case temperature (TCase)	80 °C	no data
Number of transistors	3200 Million	no data
64 bit support	+	+
Windows 11 compatibility	-	no data

Compatibility

Information on Xeon D-1540 and Core Ultra 7 155U 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	FCBGA1667	FCBGA2049
Power consumption (TDP)	45 Watt	15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon D-1540 and Core Ultra 7 155U. 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	+	+
vPro	no data	+
Enhanced SpeedStep (EIST)	+	+
Speed Shift	no data	+
Turbo Boost Technology	2.0	no data
Hyper-Threading Technology	+	+
TSX	+	+
Idle States	+	no data
Thermal Monitoring	+	+
Flex Memory Access	no data	+
GPIO	+	no data
Turbo Boost Max 3.0	no data	-
Deep Learning Boost	-	+
Supported AI Software Frameworks	-	OpenVINO™, WindowsML, ONNX RT

Security technologies

Xeon D-1540 and Core Ultra 7 155U 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-1540 and Core Ultra 7 155U are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon D-1540 and Core Ultra 7 155U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4	DDR5
Maximum memory size	128 GB	96 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	Intel® Graphics
Quick Sync Video	-	+
Graphics max frequency	no data	1.95 GHz

Graphics interfaces

Available interfaces and connections of Xeon D-1540 and Core Ultra 7 155U integrated GPUs.

Number of displays supported

no data

Graphics image quality

Maximum display resolutions supported by Xeon D-1540 and Core Ultra 7 155U integrated GPUs, including resolutions over different interfaces.

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

Graphics API support

APIs supported by Xeon D-1540 and Core Ultra 7 155U integrated GPUs, sometimes API versions are included.

DirectX	no data	12.2
OpenGL	no data	4.6

Peripherals

Specifications and connection of peripherals supported by Xeon D-1540 and Core Ultra 7 155U.

PCIe version	2.0/3.0	4.0
PCI Express lanes	24	12
PCI support	no data	4.0
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.

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.

Xeon D-1540 6.55

Ultra 7 155U 10.96
+67.3%

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

Xeon D-1540 10025

Ultra 7 155U 16770
+67.3%

Gaming performance

Pros & cons summary

Performance score	6.55	10.96
Recency	9 March 2015	14 December 2023
Physical cores	8	12
Threads	16	14
Power consumption (TDP)	45 Watt	15 Watt

Xeon D-1540 has 14.3% more threads.

Ultra 7 155U, on the other hand, has a 67.3% higher aggregate performance score, an age advantage of 8 years, 50% more physical cores, and 200% lower power consumption.

The Core Ultra 7 155U is our recommended choice as it beats the Xeon D-1540 in performance tests.

Be aware that Xeon D-1540 is a server/workstation processor while Core Ultra 7 155U is a notebook one.

Should you still have questions on choice between Xeon D-1540 and Core Ultra 7 155U, ask them in Comments section, and we shall answer.