Intel Core i9 9940X vs Intel Core i9 12900KS
CPU · Specs Compare
General Parameters
Release Date
Oct 2018
Apr 2022
Manufacturer
Intel
Intel
Type
Desktop
Desktop
Instruction Set
x86-64
x86-64
Core Architecture
Skylake
Alder Lake-S
Processor Number
i9-9940X
i9-12900KS
Integrated Graphics
N/A
UHD Graphics 770
Package
Manufacturing Process
14 nm
10 nm
Socket
LGA-2066
LGA-1700
Power Consumption
165 W
150 W
Peak Operating Temperature
88 °C
100 °C
CPU Performance
Performance Cores
14
8
Performance Core Threads
28
—
Performance Core Base Frequency
3.3 GHz
3.4 GHz
Performance Core Turbo Frequency
4.4 GHz
5.5 GHz
Total Core Count
14
16
Total Thread Count
28
24
Bus Frequency
100 MHz
100 MHz
Multiplier
33x
34x
L1 Cache
64 K per core
64 K per core
L2 Cache
1 MB per core
14 MB shared
L3 Cache
20 MB shared
30 MB shared
Unlocked Multiplier
Yes
Yes
Efficiency Cores
—
8
Memory Parameters
Memory Types
DDR4-2666
DDR5-4800, DDR4-3200
Max Memory Size
128 GB
128 GB
Max Memory Channels
4
2
Max Memory Bandwidth
85 GB/s
76.8 GB/s
ECC Memory Support
No
Yes
Miscellaneous
PCIe Version
3.0
5.0
PCIe Lanes
44
20
Extended Instruction Set
SSE4.1, SSE4.2, AVX-2, AVX-512
—
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
Benchmark
Cinebench R23
1,228
2,082
Cinebench R23
15,351
27,796
Geekbench 6
1,328
2,559
Geekbench 5
1,189
—
Geekbench 6
9,787
15,546
Geekbench 5
14,374
—
Passmark CPU
—
4,357
Passmark CPU
—
44,470
▲ Specs Compare
Data sourced from official specifications and benchmark tests.