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Core i5-8400H vs i7-7700


Description
The i5-8400H is based on Coffee Lake architecture while the i7-7700 is based on Kaby Lake.

Using the multithread performance as a reference, the i5-8400H gets a score of 195.9 k points while the i7-7700 gets 257.5 k points.

Summarizing, the i7-7700 is 1.3 times faster than the i5-8400H. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906ea
906e9
Core
Coffee Lake-H
Kaby Lake-S
Architecture
Base frecuency
2.5 GHz
3.6 GHz
Boost frecuency
4.2 GHz
4.2 GHz
Socket
BGA 1440
LGA 1151
Cores/Threads
4/8
4/8
TDP
45 W
65 W
Cache L1 (d+i)
4x32+4x32 kB
32+32 kB
Cache L2
4x256 kB
256 kB
Cache L3
8192 kB
8192 kB
Date
April 2018
September 2016
Mean monothread perf.
67.06k points
67.33k points
Mean multithread perf.
195.94k points
257.52k 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
i5-8400H
i7-7700
Test#1 (Integers)
26.51k
26.7k (x1.01)
Test#2 (FP)
23.61k
23.7k (x1)
Test#3 (Generic, ZIP)
5.17k
5.46k (x1.06)
Test#1 (Memory)
11.76k
11.48k (x0.98)
TOTAL
67.06k
67.33k (x1)

Multithread

i5-8400H

i7-7700
Test#1 (Integers)
85.52k
115.97k (x1.36)
Test#2 (FP)
84.4k
108.43k (x1.28)
Test#3 (Generic, ZIP)
19.19k
26.28k (x1.37)
Test#1 (Memory)
6.83k
6.85k (x1)
TOTAL
195.94k
257.52k (x1.31)

Performance/W
i5-8400H
i7-7700
Test#1 (Integers)
1901 points/W
1784 points/W
Test#2 (FP)
1875 points/W
1668 points/W
Test#3 (Generic, ZIP)
426 points/W
404 points/W
Test#1 (Memory)
152 points/W
105 points/W
TOTAL
4354 points/W
3962 points/W

Performance/GHz
i5-8400H
i7-7700
Test#1 (Integers)
6313 points/GHz
6356 points/GHz
Test#2 (FP)
5622 points/GHz
5643 points/GHz
Test#3 (Generic, ZIP)
1232 points/GHz
1300 points/GHz
Test#1 (Memory)
2800 points/GHz
2733 points/GHz
TOTAL
15967 points/GHz
16032 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.


Test#1 (Integers) [points vs time]

grafica bm.hardlimit.com


Test#2 (FP) [points vs time]

grafica bm.hardlimit.com


Test#3 (Generic, ZIP) [points vs time]

grafica bm.hardlimit.com


Test#1 (Memory) [points vs time]

grafica bm.hardlimit.com

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.


Test#1 (Integers) [points vs time]

grafica bm.hardlimit.com


Test#2 (FP) [points vs time]

grafica bm.hardlimit.com


Test#3 (Generic, ZIP) [points vs time]

grafica bm.hardlimit.com


Test#1 (Memory) [points vs time]

grafica bm.hardlimit.com

Hardlimit Benchmark Central - Ver. 3.11.4