Intel Core i9 12900K vs Intel Core i9 9940X
CPU Specs Compare
General Parameters
Release Date
Oct 2021
Oct 2018
Manufacturer
Intel
Intel
Type
Desktop
Desktop
Instruction Set
x86-64
x86-64
Core Architecture
Alder Lake
Skylake
Processor Number
i9-12900K
i9-9940X
Integrated Graphics
UHD Graphics 770
N/A
Package
Manufacturing Process
10 nm
14 nm
Socket
LGA-1700
LGA-2066
Power Consumption
125 W
165 W
Peak Operating Temperature
100°C
88 °C
CPU Performance
Performance Cores
8
14
Performance Core Threads
16
28
Performance Core Base Frequency
3,2 GHz
3.3 GHz
Performance Core Turbo Frequency
5.1 GHz
4.4 GHz
Efficiency Cores
8
-
Efficiency Core Threads
8
-
Efficiency Core Base Frequency
2.4 GHz
-
Efficiency Core Turbo Frequency
3.9 GHz
-
Total Core Count
16
14
Total Thread Count
24
28
Bus Frequency
100 MHz
100 MHz
Multiplier
32x
33x
L1 Cache
64 K per core
64 K per core
L2 Cache
14 MB shared
1 MB per core
L3 Cache
30 MB shared
20 MB shared
Unlocked Multiplier
Yes
Yes
Memory Parameters
Memory Types
DDR5-4800, DDR4-3200
DDR4-2666
Max Memory Size
128 GB
128 GB
Max Memory Channels
2
4
Max Memory Bandwidth
76.8 GB/s
85 GB/s
ECC Memory Support
Yes
No
Graphics Card Parameters
Integrated Graphics
true
-
GPU Base Frequency
300 MHz
-
GPU Max Dynamic Frequency
1550 MHz
-
Shader Units
256
-
Texture Units
16
-
Raster Operation Units
8
-
Execution Units
32
-
Power Consumption
15 W
-
Miscellaneous
📊 Benchmark
Cinebench R23
2,028
1,228
Cinebench R23
27,422
15,351
Geekbench 6
2,631
1,328
Geekbench 6
17,004
9,787
Blender
422
-
Geekbench 5
-
1,189
Geekbench 5
-
14,374