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Core i5-9600KF vs i5-6600K


Description
The i5-9600KF is based on Coffee Lake architecture while the i5-6600K is based on Skylake.

Using the multithread performance as a reference, the i5-9600KF gets a score of 280.8 k points while the i5-6600K gets 209.3 k points.

Summarizing, the i5-9600KF is 1.3 times faster than the i5-6600K . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906ec
506e3
Core
Coffee Lake-S
Skylake-S
Architecture
Base frecuency
3.7 GHz
3.5 GHz
Boost frecuency
4.6 GHz
3.9 GHz
Socket
LGA 1151
LGA 1151
Cores/Threads
6/6
4/4
TDP
95 W
95 W
Cache L1 (d+i)
6x32+6x32 kB
4x32+4x32 kB
Cache L2
6x256 kB
256 kB
Cache L3
9216 kB
6144 kB
Date
January 2019
May 2015
Mean monothread perf.
77.34k points
59.28k points
Mean multithread perf.
371.08k points
209.28k points

AVX optimized benchmark
The benchmark in mode II (AVX) is optimized to used 256 bits registers beside the first version of the Advanced Vector Extensions (AVX). The first AVX compatible CPU was released in 2011.
Monothread
i5-9600KF
i5-6600K
Test#1 (Integers)
16.92k
17.24k (x1.02)
Test#2 (FP)
25.44k
26.5k (x1.04)
Test#3 (Generic, ZIP)
6.36k
6.45k (x1.01)
Test#1 (Memory)
13.25k
9.09k (x0.69)
TOTAL
61.97k
59.28k (x0.96)

Multithread

i5-9600KF

i5-6600K
Test#1 (Integers)
95.51k
68.47k (x0.72)
Test#2 (FP)
143.19k
105.05k (x0.73)
Test#3 (Generic, ZIP)
33.85k
25.24k (x0.75)
Test#1 (Memory)
8.21k
10.5k (x1.28)
TOTAL
280.77k
209.28k (x0.75)

Performance/W
i5-9600KF
i5-6600K
Test#1 (Integers)
1005 points/W
721 points/W
Test#2 (FP)
1507 points/W
1106 points/W
Test#3 (Generic, ZIP)
356 points/W
266 points/W
Test#1 (Memory)
86 points/W
111 points/W
TOTAL
2955 points/W
2203 points/W

Performance/GHz
i5-9600KF
i5-6600K
Test#1 (Integers)
3679 points/GHz
4420 points/GHz
Test#2 (FP)
5530 points/GHz
6795 points/GHz
Test#3 (Generic, ZIP)
1383 points/GHz
1653 points/GHz
Test#1 (Memory)
2880 points/GHz
2331 points/GHz
TOTAL
13472 points/GHz
15199 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