| | | | | | |

Core i5-9400F vs i7-7700K


Description
The i5-9400F is based on Coffee Lake architecture while the i7-7700K is based on Kaby Lake.

Using the multithread performance as a reference, the i5-9400F gets a score of 331.2 k points while the i7-7700K gets 289.9 k points.

Summarizing, the i5-9400F is 1.1 times faster than the i7-7700K . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906ea
906e9
Core
Coffee Lake-S
Kaby Lake-S
Architecture
Base frecuency
2.9 GHz
4.2 GHz
Boost frecuency
4.1 GHz
4.5 GHz
Socket
LGA 1151
LGA 1151
Cores/Threads
6/6
4/8
TDP
65 W
95 W
Cache L1 (d+i)
6x32+6x32 kB
32+32 kB
Cache L2
6x256 kB
256 kB
Cache L3
9216 kB
8192 kB
Date
January 2019
September 2016
Mean monothread perf.
67.77k points
76.98k points
Mean multithread perf.
331.19k points
289.9k 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
i5-9400F
i7-7700K
Test#1 (Integers)
27.15k
30.47k (x1.12)
Test#2 (FP)
23.63k
26.94k (x1.14)
Test#3 (Generic, ZIP)
5.38k
6.25k (x1.16)
Test#1 (Memory)
11.61k
13.32k (x1.15)
TOTAL
67.77k
76.98k (x1.14)

Multithread

i5-9400F

i7-7700K
Test#1 (Integers)
156.61k
127.81k (x0.82)
Test#2 (FP)
138k
123.7k (x0.9)
Test#3 (Generic, ZIP)
29.45k
29.34k (x1)
Test#1 (Memory)
7.14k
9.05k (x1.27)
TOTAL
331.19k
289.9k (x0.88)

Performance/W
i5-9400F
i7-7700K
Test#1 (Integers)
2409 points/W
1345 points/W
Test#2 (FP)
2123 points/W
1302 points/W
Test#3 (Generic, ZIP)
453 points/W
309 points/W
Test#1 (Memory)
110 points/W
95 points/W
TOTAL
5095 points/W
3052 points/W

Performance/GHz
i5-9400F
i7-7700K
Test#1 (Integers)
6622 points/GHz
6770 points/GHz
Test#2 (FP)
5763 points/GHz
5987 points/GHz
Test#3 (Generic, ZIP)
1312 points/GHz
1389 points/GHz
Test#1 (Memory)
2831 points/GHz
2960 points/GHz
TOTAL
16528 points/GHz
17106 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