Core i7-7700 vs i5-8400
Description
The i7-7700 is based on Kaby Lake architecture while the i5-8400 is based on Coffee Lake.
Using the multithread performance as a reference, the i7-7700 gets a score of 257.5 k points while the i5-8400 gets 289.6 k points.
Summarizing, the i5-8400 is 1.1 times faster than the i7-7700 . To get a proper comparison between both models, take a look to the data shown below.
Using the multithread performance as a reference, the i7-7700 gets a score of 257.5 k points while the i5-8400 gets 289.6 k points.
Summarizing, the i5-8400 is 1.1 times faster than the i7-7700 . To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
906e9
906ea
Core
Kaby Lake-S
Coffee Lake-S
Base frecuency
3.6 GHz
2.8 GHz
Boost frecuency
4.2 GHz
4 GHz
Socket
LGA 1151
LGA 1151
Cores/Threads
4/8
6/6
TDP
65 W
65 W
Cache L1 (d+i)
32+32 kB
6x32+6x32 kB
Cache L2
256 kB
6x256 kB
Cache L3
8192 kB
9216 kB
Date
September 2016
September 2017
Mean monothread perf.
67.33k points
64.98k points
Mean multithread perf.
257.52k points
289.61k 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
i7-7700
i5-8400
Test#1 (Integers)
4.23k
4.08k (x0.96)
Test#2 (FP)
16.76k
14.96k (x0.89)
Test#3 (Generic, ZIP)
5.42k
4.98k (x0.92)
Test#1 (Memory)
12.23k
10.29k (x0.84)
TOTAL
38.64k
34.31k (x0.89)
Multithread
i7-7700
i5-8400
Test#1 (Integers)
16.71k
21.54k (x1.29)
Test#2 (FP)
73.1k
85.13k (x1.16)
Test#3 (Generic, ZIP)
25.76k
28.24k (x1.1)
Test#1 (Memory)
7.12k
4.08k (x0.57)
TOTAL
122.68k
139k (x1.13)
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
i7-7700
i5-8400
Test#1 (Integers)
26.7k
26.5k (x0.99)
Test#2 (FP)
23.7k
23.11k (x0.98)
Test#3 (Generic, ZIP)
5.46k
5.2k (x0.95)
Test#1 (Memory)
11.48k
10.16k (x0.89)
TOTAL
67.33k
64.98k (x0.97)
Multithread
i7-7700
i5-8400
Test#1 (Integers)
115.97k
135.08k (x1.16)
Test#2 (FP)
108.43k
121.49k (x1.12)
Test#3 (Generic, ZIP)
26.28k
27.53k (x1.05)
Test#1 (Memory)
6.85k
5.5k (x0.8)
TOTAL
257.52k
289.61k (x1.12)
Performance/W
i7-7700
i5-8400
Test#1 (Integers)
1784 points/W
2078 points/W
Test#2 (FP)
1668 points/W
1869 points/W
Test#3 (Generic, ZIP)
404 points/W
424 points/W
Test#1 (Memory)
105 points/W
85 points/W
TOTAL
3962 points/W
4455 points/W
Performance/GHz
i7-7700
i5-8400
Test#1 (Integers)
6356 points/GHz
6626 points/GHz
Test#2 (FP)
5643 points/GHz
5778 points/GHz
Test#3 (Generic, ZIP)
1300 points/GHz
1300 points/GHz
Test#1 (Memory)
2733 points/GHz
2541 points/GHz
TOTAL
16032 points/GHz
16245 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