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Core i7-8700k vs i5-10400


Description
The i7-8700k is based on Coffee Lake architecture while the i5-10400 is based on Comet Lake.

Using the multithread performance as a reference, the i7-8700k gets a score of 443.8 k points while the i5-10400 gets 372.2 k points.

Summarizing, the i7-8700k is 1.2 times faster than the i5-10400. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906ea
a0655
Core
Coffee Lake-S
Comet Lake-S
Architecture
Base frecuency
3.7 GHz
2.9 GHz
Boost frecuency
4.7 GHz
4.3 GHz
Socket
LGA 1151
LGA 1200
Cores/Threads
6/12
6/12
TDP
95 W
65 W
Cache L1 (d+i)
6x32+6x32 kB
6x32+6x32 kB
Cache L2
6x256 kB
6x256 kB
Cache L3
12288 kB
12288 kB
Date
October 2017
April 2020

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
i7-8700k
i5-10400
Test#1 (Integers)
31204
26427 (-15.31%)
Test#2 (FP)
27821
23886 (-14.15%)
Test#3 (Generic, ZIP)
6568
5629 (-14.29%)
Test#1 (Memory)
15004
12100 (-19.36%)
TOTAL
80598
68042 (-15.58%)

Multithread

i7-8700k

i5-10400
Test#1 (Integers)
202422
163143 (-19.40%)
Test#2 (FP)
186332
161500 (-13.33%)
Test#3 (Generic, ZIP)
44958
39943 (-11.16%)
Test#1 (Memory)
10054
7602 (-24.38%)
TOTAL
443765
372188 (-16.13%)

Performance/W
i7-8700k
i5-10400
Test#1 (Integers)
2131 points/W
2510 points/W
Test#2 (FP)
1961 points/W
2485 points/W
Test#3 (Generic, ZIP)
473 points/W
615 points/W
Test#1 (Memory)
106 points/W
117 points/W
TOTAL
4671 points/W
5726 points/W

Performance/GHz
i7-8700k
i5-10400
Test#1 (Integers)
6639 points/GHz
6146 points/GHz
Test#2 (FP)
5919 points/GHz
5555 points/GHz
Test#3 (Generic, ZIP)
1397 points/GHz
1309 points/GHz
Test#1 (Memory)
3192 points/GHz
2814 points/GHz
TOTAL
17148 points/GHz
15824 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. 3.7.9