Product Compare

Intel Core i9 12900KS vs Intel Core Ultra 7 255HX

	CPU Intel Core i9 12900KS	CPU Intel Core Ultra 7 255HX
General Parameters
Release Date	Apr 2022	Jan 2025
Manufacturer	Intel	Intel
Type	Desktop	Laptop
Instruction Set	x86-64	x86-64
Core Architecture	Alder Lake-S	Arrow Lake
Processor Number	i9-12900KS	255HX
Integrated Graphics	UHD Graphics 770	Arc Graphics (4-Cores)
Generation		Ultra 7 (Arrow Lake)
Package
Manufacturing Process	10 nm	3 nm
Socket	LGA-1700	FCBGA-2114
Power Consumption	150 W	45-55 W
Peak Operating Temperature	100 °C	105 °C
Max Turbo Power Consumption		160 W
Foundry		Intel
Package		FC-LGA18V
CPU Performance
Performance Cores	8	8
Performance Core Base Frequency	3.4 GHz	2.4 GHz
Performance Core Turbo Frequency	5.5 GHz	5.2 GHz
Efficiency Cores	8	12
Total Core Count	16	20
Total Thread Count	24	20
Bus Frequency	100 MHz	100 MHz
Multiplier	34x	24
L1 Cache	64 K per core	112 K per core
L2 Cache	14 MB shared	2 MB per core
L3 Cache	30 MB shared	30 MB shared
Unlocked Multiplier	Yes	Yes
Performance Core Threads		8
Efficiency Core Threads		12
Efficiency Core Base Frequency		1.8 GHz
Efficiency Core Turbo Frequency		4.5 GHz
SMP		1
Memory Parameters
Memory Types	DDR5-4800, DDR4-3200	DDR5-6400
Max Memory Size	128 GB	192 GB
Max Memory Channels	2	2
Max Memory Bandwidth	76.8 GB/s	102.4 GB/s
ECC Memory Support	Yes	Yes
Graphics Card Parameters
Integrated Graphics	true	true
GPU Base Frequency	300 MHz	300 MHz
GPU Max Dynamic Frequency	1550 MHz	1850 MHz
Shader Units	256	512
Texture Units	16	32
Raster Operation Units	8	16
Execution Units	32	64
Power Consumption	15 W	14
Miscellaneous
Official Website	Official Link ↗	Official Link ↗
PCIe Version	5.0	5.0
PCIe Lanes	20	24
Benchmarks
Cinebench R23 Single Core	2082	2030
Cinebench R23 Multi Core	27796	25611
Geekbench 6 Single Core	2559	3102
Geekbench 6 Multi Core	15546	15879