Product Compare

Intel Core Ultra 7 255HX vs Intel Core i7 8665U

	CPU Intel Core Ultra 7 255HX	CPU Intel Core i7 8665U
General Parameters
Release Date	Jan 2025	Apr 2019
Manufacturer	Intel	Intel
Type	Laptop	Laptop
Instruction Set	x86-64	x86-64
Core Architecture	Arrow Lake	Whiskey Lake
Processor Number	255HX	i7-8665U
Integrated Graphics	Arc Graphics (4-Cores)	UHD Graphics 620
Generation	Ultra 7 (Arrow Lake)
Package
Manufacturing Process	3 nm	14 nm
Socket	FCBGA-2114	BGA-1528
Power Consumption	45-55 W	15 W
Max Turbo Power Consumption	160 W
Peak Operating Temperature	105 °C	100 °C
Foundry	Intel
Package	FC-LGA18V
CPU Performance
Performance Cores	8	4
Performance Core Threads	8	8
Performance Core Base Frequency	2.4 GHz	1.9 GHz
Performance Core Turbo Frequency	5.2 GHz	4.8 GHz
Efficiency Cores	12
Efficiency Core Threads	12
Efficiency Core Base Frequency	1.8 GHz
Efficiency Core Turbo Frequency	4.5 GHz
Total Core Count	20	4
Total Thread Count	20	8
Bus Frequency	100 MHz
Multiplier	24	19x
L1 Cache	112 K per core	32 K per core
L2 Cache	2 MB per core	256 K per core
L3 Cache	30 MB shared	8 MB shared
Unlocked Multiplier	Yes	No
SMP	1
Memory Parameters
Memory Types	DDR5-6400	DDR4-2400, LPDDR3-2133
Max Memory Size	192 GB	64 GB
Max Memory Channels	2	2
Max Memory Bandwidth	102.4 GB/s	37.5 GB/s
ECC Memory Support	Yes	No
Graphics Card Parameters
Integrated Graphics	true	true
GPU Base Frequency	300 MHz	300 MHz
GPU Max Dynamic Frequency	1850 MHz	1150 MHz
Shader Units	512	192
Texture Units	32	24
Raster Operation Units	16	3
Execution Units	64	24
Power Consumption	14	15 W
Max Resolution		4096x2304 - 60 Hz
Miscellaneous
Official Website	Official Link ↗	Official Link ↗
PCIe Version	5.0	3.0
PCIe Lanes	24	16
Extended Instruction Set		SSE4.1, SSE4.2, AVX-2
Benchmarks
Cinebench R23 Single Core	2030	1244
Cinebench R23 Multi Core	25611	3752
Geekbench 6 Single Core	3102	1484
Geekbench 6 Multi Core	15879	3939