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Core i5-8400H vs i7-4790


Description
The i5-8400H is based on Coffee Lake architecture while the i7-4790 is based on Haswell.

Using the multithread performance as a reference, the i5-8400H gets a score of 195.9 k points while the i7-4790 gets 173.9 k points.

Summarizing, the i5-8400H is 1.1 times faster than the i7-4790 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906ea
306c3
Core
Coffee Lake-H
Haswell
Architecture
Base frecuency
2.5 GHz
3.6 GHz
Boost frecuency
4.2 GHz
4 GHz
Socket
BGA 1440
LGA 1150
Cores/Threads
4/8
4/8
TDP
45 W
84 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
May 2014
Mean monothread perf.
67.06k points
44.73k points
Mean multithread perf.
195.94k points
173.89k 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
i7-4790
Test#1 (Integers)
26.51k
22.19k (x0.84)
Test#2 (FP)
23.61k
12.45k (x0.53)
Test#3 (Generic, ZIP)
5.17k
5.11k (x0.99)
Test#1 (Memory)
11.76k
4.98k (x0.42)
TOTAL
67.06k
44.73k (x0.67)

Multithread

i5-8400H

i7-4790
Test#1 (Integers)
85.52k
87.14k (x1.02)
Test#2 (FP)
84.4k
58k (x0.69)
Test#3 (Generic, ZIP)
19.19k
22.75k (x1.19)
Test#1 (Memory)
6.83k
6k (x0.88)
TOTAL
195.94k
173.89k (x0.89)

Performance/W
i5-8400H
i7-4790
Test#1 (Integers)
1901 points/W
1037 points/W
Test#2 (FP)
1875 points/W
691 points/W
Test#3 (Generic, ZIP)
426 points/W
271 points/W
Test#1 (Memory)
152 points/W
71 points/W
TOTAL
4354 points/W
2070 points/W

Performance/GHz
i5-8400H
i7-4790
Test#1 (Integers)
6313 points/GHz
5547 points/GHz
Test#2 (FP)
5622 points/GHz
3113 points/GHz
Test#3 (Generic, ZIP)
1232 points/GHz
1279 points/GHz
Test#1 (Memory)
2800 points/GHz
1244 points/GHz
TOTAL
15967 points/GHz
11183 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