Ultra 7 155U vs Xeon D-1521

VS

Aggregate performance score

Xeon D-1521
2015
4 cores / 8 threads, 45 Watt
3.58
Core Ultra 7 155U
2023
12 cores / 14 threads, 15 Watt
10.54
+194%

Core Ultra 7 155U outperforms Xeon D-1521 by a whopping 194% based on our aggregate benchmark results.

Primary details

Comparing Xeon D-1521 and Core Ultra 7 155U processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking1519742
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation2.60no data
Market segmentServerLaptop
SeriesIntel Xeon DIntel Meteor Lake-U
Power efficiency7.5366.50
Architecture codenameBroadwell (2015−2019)Meteor Lake-P (2023)
Release date1 November 2015 (9 years ago)14 December 2023 (1 year ago)
Launch price (MSRP)$199$490

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Xeon D-1521 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 cores4 (Quad-Core)12 (Dodeca-Core)
Threads814
Base clock speed2.4 GHz1.7 GHz
Boost clock speed2.7 GHz4.8 GHz
Bus typeDMI 2.0no data
Multiplier24no data
L1 cache256 KB112 KB (per core)
L2 cache1 MB2 MB (per core)
L3 cache6 MB12 MB (shared)
Chip lithography14 nmIntel 4 nm
Die size246.24 mm2no data
Maximum core temperatureno data110 °C
Maximum case temperature (TCase)80 °Cno data
Number of transistors3200 Millionno data
64 bit support++
Windows 11 compatibility-no data

Compatibility

Information on Xeon D-1521 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 configuration1 (Uniprocessor)1
SocketFCBGA1667FCBGA2049
Power consumption (TDP)45 Watt15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon D-1521 and Core Ultra 7 155U. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® AVX2Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI++
AVX++
vProno data+
Enhanced SpeedStep (EIST)++
Speed Shiftno data+
Turbo Boost Technology2.0no data
Hyper-Threading Technology++
TSX++
Idle States+no data
Thermal Monitoring++
Flex Memory Accessno data+
GPIO+no data
Turbo Boost Max 3.0no data-
Deep Learning Boost-+
Supported AI Software Frameworks-OpenVINO™, WindowsML, ONNX RT

Security technologies

Xeon D-1521 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-1521 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-1521 and Core Ultra 7 155U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4, DDR3DDR5
Maximum memory size128 GB96 GB
Max memory channels22
Maximum memory bandwidth34.124 GB/sno data
ECC memory support+-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardno dataIntel® Graphics
Quick Sync Video-+
Graphics max frequencyno data1.95 GHz

Graphics interfaces

Available interfaces and connections of Xeon D-1521 and Core Ultra 7 155U integrated GPUs.

Number of displays supportedno data4

Graphics image quality

Maximum display resolutions supported by Xeon D-1521 and Core Ultra 7 155U integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4no data4096 x 2304 @ 60Hz (HDMI 2.1 TMDS) 7680 x 4320 @ 60Hz (HDMI2.1 FRL)
Max resolution over eDPno data3840x2400 @ 120Hz
Max resolution over DisplayPortno data7680 x 4320 @ 60Hz

Graphics API support

APIs supported by Xeon D-1521 and Core Ultra 7 155U integrated GPUs, sometimes API versions are included.

DirectXno data12.2
OpenGLno data4.6

Peripherals

Specifications and connection of peripherals supported by Xeon D-1521 and Core Ultra 7 155U.

PCIe version2.0/3.04.0
PCI Express lanes2412
PCI supportno data4.0
USB revision2.0/3.0no data
Total number of SATA ports6no data
Number of USB ports8no 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-1521 3.58
Ultra 7 155U 10.54
+194%

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-1521 5690
Ultra 7 155U 16747
+194%

Gaming performance

Pros & cons summary


Performance score 3.58 10.54
Recency 1 November 2015 14 December 2023
Physical cores 4 12
Threads 8 14
Power consumption (TDP) 45 Watt 15 Watt

Ultra 7 155U has a 194.4% higher aggregate performance score, an age advantage of 8 years, 200% more physical cores and 75% more threads, and 200% lower power consumption.

The Core Ultra 7 155U is our recommended choice as it beats the Xeon D-1521 in performance tests.

Be aware that Xeon D-1521 is a server/workstation processor while Core Ultra 7 155U is a notebook one.


Should you still have questions on choice between Xeon D-1521 and Core Ultra 7 155U, ask them in Comments section, and we shall answer.

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Intel Xeon D-1521
Xeon D-1521
Intel Core Ultra 7 155U
Core Ultra 7 155U

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Community ratings

Here you can see how users rate the processors, as well as rate them yourself.


2.5 2 votes

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Questions & comments

Here you can ask a question about Xeon D-1521 or Core Ultra 7 155U, agree or disagree with our judgements, or report an error or mismatch.