Core i7-6900K vs i5-6400
Description
The i7-6900K is based on Broadwell architecture while the i5-6400 is based on Skylake.
Using the multithread performance as a reference, the i7-6900K gets a score of 427.5 k points while the i5-6400 gets 174.1 k points.
Summarizing, the i7-6900K is 2.5 times faster than the i5-6400 . To get a proper comparison between both models, take a look to the data shown below.
Using the multithread performance as a reference, the i7-6900K gets a score of 427.5 k points while the i5-6400 gets 174.1 k points.
Summarizing, the i7-6900K is 2.5 times faster than the i5-6400 . To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
406f1
506e3
Core
Broadwell-E
Skylake-S
Base frecuency
3.2 GHz
2.7 GHz
Boost frecuency
3.7 GHz
3.3 GHz
Socket
LGA 2011-3
LGA 1151
Cores/Threads
8/16
4/4
TDP
140 W
65 W
Cache L1 (d+i)
8x32+8x32 kB
4x32+4x32 kB
Cache L2
8x256 kB
4x256 kB
Cache L3
20480 kB
6144 kB
Date
September 2016
September 2015
Mean monothread perf.
49.76k points
48.05k points
Mean multithread perf.
427.51k points
174.05k points
AVX2 optimized benchmark
The benchmark in mode III (AVX2), like AVX1, is optimized to used 256 bits registers beside the second version of the Advanced Vector Extensions (AVX). The first AVX2 compatible CPU was released in 2013.
Monothread
i7-6900K
i5-6400
Test#1 (Integers)
23.11k
21.1k (x0.91)
Test#2 (FP)
17.84k
18.28k (x1.02)
Test#3 (Generic, ZIP)
5.34k
4.22k (x0.79)
Test#1 (Memory)
3.47k
4.45k (x1.28)
TOTAL
49.76k
48.05k (x0.97)
Multithread
i7-6900K
i5-6400
Test#1 (Integers)
184.19k
80.03k (x0.43)
Test#2 (FP)
181.2k
71.1k (x0.39)
Test#3 (Generic, ZIP)
47.44k
16.19k (x0.34)
Test#1 (Memory)
14.69k
6.73k (x0.46)
TOTAL
427.51k
174.05k (x0.41)
Performance/W
i7-6900K
i5-6400
Test#1 (Integers)
1316 points/W
1231 points/W
Test#2 (FP)
1294 points/W
1094 points/W
Test#3 (Generic, ZIP)
339 points/W
249 points/W
Test#1 (Memory)
105 points/W
104 points/W
TOTAL
3054 points/W
2678 points/W
Performance/GHz
i7-6900K
i5-6400
Test#1 (Integers)
6247 points/GHz
6394 points/GHz
Test#2 (FP)
4822 points/GHz
5539 points/GHz
Test#3 (Generic, ZIP)
1444 points/GHz
1279 points/GHz
Test#1 (Memory)
938 points/GHz
1348 points/GHz
TOTAL
13450 points/GHz
14560 points/GHz
Monothread performance graph
Monothread performance graphics gives the performance vs time. They are useful to measure the time it takes to the CPU to reach the maximum performance.
Usually, CPU's performance will be steady during these tests but if it has a slow frequency strategy, the first samples will show a lower score.
Usually, CPU's performance will be steady during these tests but if it has a slow frequency strategy, the first samples will show a lower score.
Test#1 (Integers) [points vs time]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
Multithread performance graph
Multithread graphs measure the performance against a heavy load during certain time.
If CPU's TDP doesn't limit the frequency and the machine is properly cooled, performance should remain steady vs time. Otherwise, the performance score will oscillate or decrease over time.
If CPU's TDP doesn't limit the frequency and the machine is properly cooled, performance should remain steady vs time. Otherwise, the performance score will oscillate or decrease over time.
Test#1 (Integers) [points vs time]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
Hardlimit Benchmark Central - Ver. 3.11.4