Intel Core i7 6900K vs Intel Core i5 6400
We compared two desktop CPUs: Intel Core i7 6900K with 8 cores 3.2GHz and Intel Core i5 6400 with 4 cores 2.7GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.
Main Differences
Intel Core i7 6900K 's Advantages
Released 8 months late
Larger memory bandwidth (76.8GB/s vs 34.1GB/s)
Higher base frequency (3.2GHz vs 2.7GHz)
Larger L3 cache size (20MB vs 6MB)
Intel Core i5 6400 's Advantages
Integrated graphics card
Higher specification of memory (2133 vs 2133)
Lower TDP (65W vs 140W)
Score
Benchmark
Cinebench R23 Single Core
Intel Core i7 6900K
+28%
1151
Intel Core i5 6400
898
Cinebench R23 Multi Core
Intel Core i7 6900K
+252%
11326
Intel Core i5 6400
3214
Geekbench 6 Single Core
Intel Core i7 6900K
+12%
1286
Intel Core i5 6400
1143
Geekbench 6 Multi Core
Intel Core i7 6900K
+125%
7470
Intel Core i5 6400
3312
Blender
Intel Core i7 6900K
+291%
192
Intel Core i5 6400
49
Geekbench 5 Single Core
Intel Core i7 6900K
+12%
961
Intel Core i5 6400
853
Geekbench 5 Multi Core
Intel Core i7 6900K
+161%
7327
Intel Core i5 6400
2805
Passmark CPU Single Core
Intel Core i7 6900K
+17%
2310
Intel Core i5 6400
1961
Passmark CPU Multi Core
Intel Core i7 6900K
+176%
14258
Intel Core i5 6400
5151
General Parameters
May 2016
Release Date
Sep 2015
Intel
Manufacturer
Intel
Desktop
Type
Desktop
x86-64
Instruction Set
x86-64
Broadwell E
Core Architecture
Skylake
i7-6900K
Processor Number
i5-6400
LGA-2011-3
Socket
LGA-1151
N/A
Integrated Graphics
HD Graphics 530
Package
14 nm
Manufacturing Process
14 nm
140 W
Power Consumption
65 W
CPU Performance
8
Performance Cores
4
16
Performance Core Threads
4
3.2 GHz
Performance Core Base Frequency
2.7 GHz
3.7 GHz
Performance Core Turbo Frequency
3.3 GHz
8
Total Core Count
4
16
Total Thread Count
4
100 MHz
Bus Frequency
100 MHz
32x
Multiplier
27x
64 K per core
L1 Cache
64 K per core
256 K per core
L2 Cache
256 K per core
20 MB shared
L3 Cache
6 MB shared
No
Unlocked Multiplier
No
Memory Parameters
DDR4-2133
Memory Types
DDR4-2133, DDR3L-1600
128 GB
Max Memory Size
64 GB
4
Max Memory Channels
2
76.8 GB/s
Max Memory Bandwidth
34.1 GB/s
No
ECC Memory Support
No
Graphics Card Parameters
-
Integrated Graphics
true
-
GPU Max Dynamic Frequency
950 MHz
Miscellaneous
3.0
PCIe Version
3.0
40
PCIe Lanes
16
-
Extended Instruction Set
SSE4.1, SSE4.2, AVX-2
