Intel Core i5-8259U vs Intel Xeon D-1521

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CPU comparison with benchmarks

-VS-

CPU lineage

Intel Core i5-8259U or Intel Core i5-8259U – which processor offers superior performance? In this comparison, we examine disparities and assess which of these two CPUs outperforms the other. We delve into technical specifications and benchmark outcomes.
The Intel Core i5-8259U features 4 processor cores and has the capability to manage 8 threads concurrently.
It was released in Q2/2018 and belongs to the 8 generation of the Intel Core i5 series.
To use the Intel Core i5-8259U, you'll need a motherboard with a BGA 1528 socket.
The Intel Xeon D-1521 features 4 processor cores and has the capability to manage 8 threads concurrently.
It was released in Q4/2015 and belongs to the 1 generation of the Intel Xeon D series.
To use the Intel Xeon D-1521, you'll need a motherboard with a BGA 1667 socket.
Mobile Segment Desktop / Server
Intel Core i5-8259U Name Intel Xeon D-1521
Intel Core i5 Family Intel Xeon D
8 Generation 1
Intel Core i 8000U Group Intel Xeon D-1500
 
 

CPU Cores and Base Frequency

The Intel Core i5-8259U has 4 CPU cores and can calculate 8 threads in parallel.
The clock frequency of the Intel Core i5-8259U is 2.3 GHz
and turbo frequency for one core is 3.8 GHz.
The Intel Xeon D-1521 has 4 CPU cores and can calculate 8 threads in parallel.
The clock frequency of the Intel Xeon D-1521 is 2.4 GHz
and turbo frequency for one core is 2.7 GHz.
3.8 GHz Turbo Frequency (1 core) 2.7 GHz
No Overclocking No
normal Core architecture normal
2.3 GHz Frequency 2.4 GHz
8 Threads 8
3.2 GHz Turbo Frequency (all cores) 2.4 GHz
Yes Hyperthreading Yes
4 CPU Cores 4
4x Cores 4x
 
 

Internal Graphics

The Intel Core i5-8259U has integrated graphics, called iGPU for short.
Specifically, the Intel Core i5-8259U uses the Intel Iris Plus Graphics 655, which has 384 texture shaders
and 48 execution units.
The iGPU uses the system's main memory as graphics memory and sits on the processor's die.
The Intel Xeon D-1521 does not have integrated graphics.
0.3 GHz GPU frequency --
Q4/2017 Release date --
12 Direct X --
Intel Iris Plus Graphics 655 GPU name
14 nm Technology --
-- Max. displays --
384 Shaders --
32.0 GB Max. GPU Memory 0 bytes
48 Execution units --
9.5 Generation --
1.05 GHz GPU (Turbo) --
 
 

Artificial Intelligence and Machine Learning

-- AI specifications --
-- AI hardware --
 
 

Hardware codec support

A photo or video codec that is accelerated in hardware can greatly accelerate the working speed of a processor and extend the battery life of notebooks or smartphones when playing videos.
Decode / Encode AVC --
Decode VC-1 --
Decode / Encode VP9 --
Decode / Encode h265 / HEVC (10 bit) --
Decode / Encode h264 --
Decode / Encode VP8 --
Decode / Encode h265 / HEVC (8 bit) --
Decode / Encode JPEG --
No AV1 --
 
 

Memory & PCIe

The processor supports a maximum memory capacity of 32.0 GB distributed across 2 memory channels. It offers a peak memory bandwidth of 38.4 GB/s. Both the type and quantity of memory can have a substantial impact on the overall system performance.
The processor supports a maximum memory capacity of 128.0 GB distributed across 2 memory channels. It offers a peak memory bandwidth of 34.1 GB/s. Both the type and quantity of memory can have a substantial impact on the overall system performance.
2 Memory channels 2
32.0 GB Max. Memory 128.0 GB
pci PCIe pci
Yes AES-NI Yes
No ECC Yes
38.4 GB/s Bandwidth 34.1 GB/s
DDR4-2400 Memory type DDR4-2133
 
 

Thermal Management

The processor has a thermal design power (TDP) of 28 W watts.
TDP indicates the cooling solution needed to effectively manage the processor's heat. It generally provides an approximate indication of the actual power consumption of the CPU itself.
The processor has a thermal design power (TDP) of 45 W watts.
-- Tjunction max --
28 W TDP (PL1 / PBP) 45 W
 
 

Technical details

The Intel Core i5-8259U is manufactured using a 14 nm process.
A smaller manufacturing process indicates a more contemporary and energy-efficient CPU.
In total, this processor boasts a generous 6.0 MB cache.
A substantial cache can significantly enhance the processor's performance, particularly in scenarios like gaming.
The Intel Xeon D-1521 is manufactured using a 14 nm process.
Q2/2018 Release date Q4/2015
-- Part Number --
0 bytes L2-Cache 6.0 MB
VT-x, VT-x EPT, VT-d Virtualization VT-x, VT-x EPT, VT-d
SSE4.1, SSE4.2, AVX2 ISA extensions SSE4.1, SSE4.2, AVX2
Monolithic Chip design Monolithic
Coffee Lake U Architecture Broadwell
14 nm Technology 14 nm
BGA 1528 Socket BGA 1667
Windows 10, Linux, Windows 11 Operating systems Windows 10, Linux
-- Release price 216 $
Technical data sheet Documents Technical data sheet
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
6.0 MB L3-Cache 0 bytes
 
 

Benchmarks

Geekbench 6 (Multi-Core)

Intel Core i5-8259U
4C 8T @ 2.3 GHz
4316
4316
Intel Xeon D-1521
4C 8T @ 2.4 GHz
3327
3327

Geekbench 5, 64bit (Multi-Core)

Intel Core i5-8259U
4C 8T @ 2.3 GHz
3983
3983
Intel Xeon D-1521
4C 8T @ 2.4 GHz
3163
3163

Geekbench 6 (Single-Core)

Intel Core i5-8259U
4C 8T @ 2.3 GHz
1167
1167
Intel Xeon D-1521
4C 8T @ 2.4 GHz
912
912