| | | | | | |

Core i5-10400F vs i7-8700k


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

Using the multithread performance as a reference, the i5-10400F gets a score of 369 k points while the i7-8700k gets 443.8 k points.

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

Specs
CPUID
a0653
906ea
Core
Comet Lake-S
Coffee Lake-S
Architecture
Base frecuency
2.9 GHz
3.7 GHz
Boost frecuency
4.3 GHz
4.7 GHz
Socket
LGA 1200
LGA 1151
Cores/Threads
6/12
6/12
TDP
65 W
95 W
Cache L1 (d+i)
6x32+6x32 kB
6x32+6x32 kB
Cache L2
6x256 kB
6x256 kB
Cache L3
12288 kB
12288 kB
Date
April 2020
October 2017
Mean monothread perf.
68.02k points
80.6k points
Mean multithread perf.
369.01k points
443.77k 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
i5-10400F
i7-8700k
Test#1 (Integers)
4.3k
4.13k (x0.96)
Test#2 (FP)
16.56k
16.96k (x1.02)
Test#3 (Generic, ZIP)
5.25k
5.56k (x1.06)
Test#1 (Memory)
12.61k
12.85k (x1.02)
TOTAL
38.72k
39.5k (x1.02)

Multithread

i5-10400F

i7-8700k
Test#1 (Integers)
18.1k
24.01k (x1.33)
Test#2 (FP)
79.16k
108.69k (x1.37)
Test#3 (Generic, ZIP)
26.75k
36.62k (x1.37)
Test#1 (Memory)
13.81k
9.33k (x0.68)
TOTAL
137.82k
178.64k (x1.3)

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
i5-10400F
i7-8700k
Test#1 (Integers)
26.29k
31.2k (x1.19)
Test#2 (FP)
23.38k
27.82k (x1.19)
Test#3 (Generic, ZIP)
5.51k
6.57k (x1.19)
Test#1 (Memory)
12.84k
15k (x1.17)
TOTAL
68.02k
80.6k (x1.18)

Multithread

i5-10400F

i7-8700k
Test#1 (Integers)
163.37k
202.42k (x1.24)
Test#2 (FP)
159.38k
186.33k (x1.17)
Test#3 (Generic, ZIP)
38.87k
44.96k (x1.16)
Test#1 (Memory)
7.39k
10.05k (x1.36)
TOTAL
369.01k
443.77k (x1.2)

Performance/W
i5-10400F
i7-8700k
Test#1 (Integers)
2513 points/W
2131 points/W
Test#2 (FP)
2452 points/W
1961 points/W
Test#3 (Generic, ZIP)
598 points/W
473 points/W
Test#1 (Memory)
114 points/W
106 points/W
TOTAL
5677 points/W
4671 points/W

Performance/GHz
i5-10400F
i7-8700k
Test#1 (Integers)
6113 points/GHz
6639 points/GHz
Test#2 (FP)
5437 points/GHz
5919 points/GHz
Test#3 (Generic, ZIP)
1282 points/GHz
1397 points/GHz
Test#1 (Memory)
2987 points/GHz
3192 points/GHz
TOTAL
15819 points/GHz
17148 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