Intel Core i5 6400 vs Intel Core i7 9800X
We compared two desktop CPUs: Intel Core i5 6400 with 4 cores 2.7GHz and Intel Core i7 9800X with 8 cores 3.8GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.
Main Differences
Intel Core i5 6400 's Advantages
Integrated graphics card
Lower TDP (65W vs 165W)
Intel Core i7 9800X 's Advantages
Released 3 years and 1 months late
Higher specification of memory (2666 vs 2133)
Larger memory bandwidth (79.47GB/s vs 34.1GB/s)
Higher base frequency (3.8GHz vs 2.7GHz)
Larger L3 cache size (17MB vs 6MB)
Score
Benchmark
Cinebench R23 Single Core
Intel Core i5 6400
898
Intel Core i7 9800X
+40%
1263
Cinebench R23 Multi Core
Intel Core i5 6400
3214
Intel Core i7 9800X
+306%
13055
Geekbench 6 Single Core
Intel Core i5 6400
1143
Intel Core i7 9800X
+14%
1314
Geekbench 6 Multi Core
Intel Core i5 6400
3312
Intel Core i7 9800X
+141%
7991
Geekbench 5 Single Core
Intel Core i5 6400
853
Intel Core i7 9800X
+43%
1225
Geekbench 5 Multi Core
Intel Core i5 6400
2805
Intel Core i7 9800X
+243%
9648
Passmark CPU Single Core
Intel Core i5 6400
1961
Intel Core i7 9800X
+31%
2573
Passmark CPU Multi Core
Intel Core i5 6400
5151
Intel Core i7 9800X
+251%
18121
General Parameters
Sep 2015
Release Date
Oct 2018
Intel
Manufacturer
Intel
Desktop
Type
Desktop
x86-64
Instruction Set
x86-64
Skylake
Core Architecture
Skylake
i5-6400
Processor Number
i7-9800X
LGA-1151
Socket
LGA-2066
HD Graphics 530
Integrated Graphics
N/A
-
-
-
Package
-
-
-
14 nm
Manufacturing Process
14 nm
-
-
-
65 W
Power Consumption
165 W
-
-
-
-
Peak Operating Temperature
95 °C
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
CPU Performance
4
Performance Cores
8
4
Performance Core Threads
16
2.7 GHz
Performance Core Base Frequency
3.8 GHz
3.3 GHz
Performance Core Turbo Frequency
4.4 GHz
-
-
-
-
-
-
-
-
-
-
-
-
4
Total Core Count
8
4
Total Thread Count
16
100 MHz
Bus Frequency
100 MHz
27x
Multiplier
38x
-
-
-
64 K per core
L1 Cache
64 K per core
256 K per core
L2 Cache
1 MB per core
6 MB shared
L3 Cache
17 MB shared
No
Unlocked Multiplier
Yes
-
-
-
-
-
-
-
-
-
-
-
-
-
Memory Parameters
DDR4-2133, DDR3L-1600
Memory Types
DDR4-2666
64 GB
Max Memory Size
128 GB
2
Max Memory Channels
4
34.1 GB/s
Max Memory Bandwidth
79.47 GB/s
No
ECC Memory Support
No
Graphics Card Parameters
true
Integrated Graphics
-
-
-
-
950 MHz
GPU Max Dynamic Frequency
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
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
-
