Intel Core i7 1255U vs Intel Core i7 6900K
CPU · Specs Compare
General Parameters
Release Date
Feb 2022
May 2016
Manufacturer
Intel
Intel
Type
Laptop
Desktop
Instruction Set
x86-64
x86-64
Core Architecture
Alder Lake
Broadwell E
Processor Number
i7-1255U
i7-6900K
Integrated Graphics
Iris Xe Graphics (96EU)
N/A
Package
Manufacturing Process
10 nm
14 nm
Socket
BGA-1744
LGA-2011-3
Power Consumption
12-15 W
140 W
Max Turbo Power Consumption
55 W
—
Peak Operating Temperature
100°C
—
CPU Performance
Performance Cores
2
8
Performance Core Threads
4
16
Performance Core Base Frequency
1.7 GHz
3.2 GHz
Performance Core Turbo Frequency
4.7 GHz
3.7 GHz
Efficiency Cores
8
—
Efficiency Core Threads
8
—
Efficiency Core Base Frequency
1.2 GHz
—
Efficiency Core Turbo Frequency
3.5 GHz
—
Total Core Count
10
8
Total Thread Count
12
16
Bus Frequency
100 MHz
100 MHz
Multiplier
17x
32x
L1 Cache
80 K per core
64 K per core
L2 Cache
1280 K per core
256 K per core
L3 Cache
12 MB shared
20 MB shared
Unlocked Multiplier
No
No
Memory Parameters
Memory Types
DDR5-4800, DDR4-3200, LPDDR5-5200, LPDDR4x-4267
DDR4-2133
Max Memory Size
64 GB
128 GB
Max Memory Channels
2
4
Max Memory Bandwidth
76.8 GB/s
76.8 GB/s
ECC Memory Support
No
No
Graphics Card Parameters
Integrated Graphics
true
—
GPU Base Frequency
300 MHz
—
GPU Max Dynamic Frequency
1250 MHz
—
Shader Units
768
—
Texture Units
48
—
Raster Operation Units
24
—
Execution Units
96
—
Power Consumption
15 W
—
Miscellaneous
PCIe Version
4.0
3.0
PCIe Lanes
20
40
Benchmark
Cinebench R23
1,701
—
Cinebench R23
8,233
—
Geekbench 6
2,248
1,286
Geekbench 5
1,628
—
Geekbench 6
7,162
7,470
Geekbench 5
7,372
—
Blender
125
—
Passmark CPU
3,308
—
Passmark CPU
13,792
—
▲ Specs Compare
Data sourced from official specifications and benchmark tests.