Intel Core i9 9900K vs Intel Core i9 9940X
We compared two desktop CPUs: Intel Core i9 9900K with 8 cores 3.6GHz and Intel Core i9 9940X with 14 cores 3.3GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.
Main Differences
Intel Core i9 9900K 's Advantages
Integrated graphics card
Higher base frequency (3.6GHz vs 3.3GHz)
Lower TDP (95W vs 165W)
Intel Core i9 9940X 's Advantages
Larger memory bandwidth (85GB/s vs 41.6GB/s)
Larger L3 cache size (20MB vs 16MB)
Score
Benchmark
Cinebench R23 Single Core
Intel Core i9 9900K
+8%
1333
Intel Core i9 9940X
1228
Cinebench R23 Multi Core
Intel Core i9 9900K
12496
Intel Core i9 9940X
+22%
15351
Geekbench 6 Single Core
Intel Core i9 9900K
+25%
1665
Intel Core i9 9940X
1328
Geekbench 6 Multi Core
Intel Core i9 9900K
6395
Intel Core i9 9940X
+53%
9787
Geekbench 5 Single Core
Intel Core i9 9900K
+6%
1265
Intel Core i9 9940X
1189
Geekbench 5 Multi Core
Intel Core i9 9900K
8406
Intel Core i9 9940X
+70%
14374
Passmark CPU Single Core
Intel Core i9 9900K
+12%
2945
Intel Core i9 9940X
2608
Passmark CPU Multi Core
Intel Core i9 9900K
18381
Intel Core i9 9940X
+54%
28355
General Parameters
Oct 2018
Release Date
Oct 2018
Intel
Manufacturer
Intel
Desktop
Type
Desktop
x86-64
Instruction Set
x86-64
Coffee Lake
Core Architecture
Skylake
i9-9900K
Processor Number
i9-9940X
LGA-1151
Socket
LGA-2066
UHD Graphics 630
Integrated Graphics
N/A
-
-
-
Package
-
-
-
14 nm
Manufacturing Process
14 nm
-
-
-
95 W
Power Consumption
165 W
-
-
-
100 °C
Peak Operating Temperature
88 °C
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
CPU Performance
8
Performance Cores
14
16
Performance Core Threads
28
3.6 GHz
Performance Core Base Frequency
3.3 GHz
5 GHz
Performance Core Turbo Frequency
4.4 GHz
-
-
-
-
-
-
-
-
-
-
-
-
8
Total Core Count
14
16
Total Thread Count
28
100 MHz
Bus Frequency
100 MHz
36x
Multiplier
33x
-
-
-
64 K per core
L1 Cache
64 K per core
256 K per core
L2 Cache
1 MB per core
16 MB shared
L3 Cache
20 MB shared
Yes
Unlocked Multiplier
Yes
-
-
-
-
-
-
-
-
-
-
-
-
-
Memory Parameters
DDR4-2666
Memory Types
DDR4-2666
128 GB
Max Memory Size
128 GB
2
Max Memory Channels
4
41.6 GB/s
Max Memory Bandwidth
85 GB/s
No
ECC Memory Support
No
Graphics Card Parameters
true
Integrated Graphics
-
350 MHz
GPU Base Frequency
-
1200 MHz
GPU Max Dynamic Frequency
-
192
Shader Units
-
24
Texture Units
-
3
Raster Operation Units
-
24
Execution Units
-
15 W
Power Consumption
-
4096x2304 - 60 Hz
Max Resolution
-
0.38 TFLOPS
Graphics Performance
-
AI Accelerator
-
-
-
-
-
-
Miscellaneous
3.0
PCIe Version
3.0
16
PCIe Lanes
44
SSE4.1, SSE4.2, AVX-2
Extended Instruction Set
SSE4.1, SSE4.2, AVX-2, AVX-512
-
