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Core i5-6600K vs i5-9400F


Description
The i5-6600K is based on Skylake architecture while the i5-9400F is based on Coffee Lake.

Using the multithread performance as a reference, the i5-6600K gets a score of 199.9 k points while the i5-9400F gets 331.2 k points.

Summarizing, the i5-9400F is 1.7 times faster than the i5-6600K . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
506e3
906ea
Core
Skylake-S
Coffee Lake-S
Architecture
Base frecuency
3.5 GHz
2.9 GHz
Boost frecuency
3.9 GHz
4.1 GHz
Socket
LGA 1151
LGA 1151
Cores/Threads
4/4
6/6
TDP
95 W
65 W
Cache L1 (d+i)
4x32+4x32 kB
6x32+6x32 kB
Cache L2
256 kB
6x256 kB
Cache L3
6144 kB
9216 kB
Date
May 2015
January 2019
Mean monothread perf.
56.21k points
67.77k points
Mean multithread perf.
199.91k points
331.19k 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
i5-6600K
i5-9400F
Test#1 (Integers)
24.19k
27.15k (x1.12)
Test#2 (FP)
21.31k
23.63k (x1.11)
Test#3 (Generic, ZIP)
4.95k
5.38k (x1.09)
Test#1 (Memory)
5.75k
11.61k (x2.02)
TOTAL
56.21k
67.77k (x1.21)

Multithread

i5-6600K

i5-9400F
Test#1 (Integers)
93.15k
156.61k (x1.68)
Test#2 (FP)
81.18k
138k (x1.7)
Test#3 (Generic, ZIP)
18.29k
29.45k (x1.61)
Test#1 (Memory)
7.29k
7.14k (x0.98)
TOTAL
199.91k
331.19k (x1.66)

Performance/W
i5-6600K
i5-9400F
Test#1 (Integers)
981 points/W
2409 points/W
Test#2 (FP)
855 points/W
2123 points/W
Test#3 (Generic, ZIP)
193 points/W
453 points/W
Test#1 (Memory)
77 points/W
110 points/W
TOTAL
2104 points/W
5095 points/W

Performance/GHz
i5-6600K
i5-9400F
Test#1 (Integers)
6203 points/GHz
6622 points/GHz
Test#2 (FP)
5463 points/GHz
5763 points/GHz
Test#3 (Generic, ZIP)
1270 points/GHz
1312 points/GHz
Test#1 (Memory)
1475 points/GHz
2831 points/GHz
TOTAL
14412 points/GHz
16528 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