Core i5-8400 vs i7-7700K
Description
The i5-8400 is based on Coffee Lake architecture while the i7-7700K is based on Kaby Lake.
Using the multithread performance as a reference, the i5-8400 gets a score of 289.6 k points while the i7-7700K gets 289.8 k points.
Summarizing, the i7-7700K is 1 times faster than the i5-8400. To get a proper comparison between both models, take a look to the data shown below.
Using the multithread performance as a reference, the i5-8400 gets a score of 289.6 k points while the i7-7700K gets 289.8 k points.
Summarizing, the i7-7700K is 1 times faster than the i5-8400. To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
906ea
906e9
Core
Coffee Lake-S
Kaby Lake-S
Base frecuency
2.8 GHz
4.2 GHz
Boost frecuency
4 GHz
4.5 GHz
Socket
LGA 1151
LGA 1151
Cores/Threads
6/6
4/8
TDP
65 W
95 W
Cache L1 (d+i)
6x32+6x32 kB
32+32 kB
Cache L2
6x256 kB
256 kB
Cache L3
9216 kB
8192 kB
Date
September 2017
September 2016
Mean monothread perf.
64.98k points
76.9k points
Mean multithread perf.
289.61k points
289.82k points
Non-optimized benchmark
The benchmark in Mode 0 (FPU) measures cpu performance with non-optimized software. It uses the basic µinstructions from the i386 architecture with the i387 floating point unit. This mode is compatible with all CPUs so it's practical to compare very different CPUs
Monothread
i5-8400
i7-7700K
Test#1 (Integers)
4.08k
4.63k (x1.13)
Test#2 (FP)
14.96k
18.92k (x1.27)
Test#3 (Generic, ZIP)
4.98k
6.22k (x1.25)
Test#1 (Memory)
10.29k
13.92k (x1.35)
TOTAL
34.31k
43.7k (x1.27)
Multithread
i5-8400
i7-7700K
Test#1 (Integers)
21.54k
18.53k (x0.86)
Test#2 (FP)
85.13k
86.49k (x1.02)
Test#3 (Generic, ZIP)
28.24k
28.78k (x1.02)
Test#1 (Memory)
4.08k
9.67k (x2.37)
TOTAL
139k
143.47k (x1.03)
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
i5-8400
i7-7700K
Test#1 (Integers)
26.5k
30.44k (x1.15)
Test#2 (FP)
23.11k
26.91k (x1.16)
Test#3 (Generic, ZIP)
5.2k
6.25k (x1.2)
Test#1 (Memory)
10.16k
13.3k (x1.31)
TOTAL
64.98k
76.9k (x1.18)
Multithread
i5-8400
i7-7700K
Test#1 (Integers)
135.08k
127.73k (x0.95)
Test#2 (FP)
121.49k
123.68k (x1.02)
Test#3 (Generic, ZIP)
27.53k
29.34k (x1.07)
Test#1 (Memory)
5.5k
9.08k (x1.65)
TOTAL
289.61k
289.82k (x1)
Performance/W
i5-8400
i7-7700K
Test#1 (Integers)
2078 points/W
1345 points/W
Test#2 (FP)
1869 points/W
1302 points/W
Test#3 (Generic, ZIP)
424 points/W
309 points/W
Test#1 (Memory)
85 points/W
96 points/W
TOTAL
4455 points/W
3051 points/W
Performance/GHz
i5-8400
i7-7700K
Test#1 (Integers)
6626 points/GHz
6765 points/GHz
Test#2 (FP)
5778 points/GHz
5981 points/GHz
Test#3 (Generic, ZIP)
1300 points/GHz
1388 points/GHz
Test#1 (Memory)
2541 points/GHz
2955 points/GHz
TOTAL
16245 points/GHz
17089 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