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Core i5-9600KF vs i9-7980XE


Description
The i5-9600KF is based on Coffee Lake architecture while the i9-7980XE is based on Skylake.

Using the multithread performance as a reference, the i5-9600KF gets a score of 371.1 k points while the i9-7980XE gets 1223.8 k points.

Summarizing, the i9-7980XE is 3.3 times faster than the i5-9600KF. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906ec
50654
Core
Coffee Lake-S
Skylake-X
Architecture
Base frecuency
3.7 GHz
2.6 GHz
Boost frecuency
4.6 GHz
4.4 GHz
Socket
LGA 1151
LGA 2066
Cores/Threads
6/6
18/36
TDP
95 W
165 W
Cache L1 (d+i)
6x32+6x32 kB
18x32+18x32 kB
Cache L2
6x256 kB
18x1024 kB
Cache L3
9216 kB
25344 kB
Date
January 2019
May 2017
Mean monothread perf.
77.34k points
76.43k points
Mean multithread perf.
371.08k points
1223.79k 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
i5-9600KF
i9-7980XE
Test#1 (Integers)
4.63k
4.89k (x1.06)
Test#2 (FP)
19.43k
19.98k (x1.03)
Test#3 (Generic, ZIP)
6.17k
6.14k (x1)
Test#1 (Memory)
13.82k
9.81k (x0.71)
TOTAL
44.04k
40.82k (x0.93)

Multithread

i5-9600KF

i9-7980XE
Test#1 (Integers)
26.64k
79.8k (x3)
Test#2 (FP)
110.11k
372.72k (x3.39)
Test#3 (Generic, ZIP)
33.07k
121.42k (x3.67)
Test#1 (Memory)
8.3k
26.48k (x3.19)
TOTAL
178.11k
600.43k (x3.37)

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
i5-9600KF
i9-7980XE
Test#1 (Integers)
30.52k
31.16k (x1.02)
Test#2 (FP)
26.54k
28.13k (x1.06)
Test#3 (Generic, ZIP)
6.41k
6.65k (x1.04)
Test#1 (Memory)
13.87k
10.5k (x0.76)
TOTAL
77.34k
76.43k (x0.99)

Multithread

i5-9600KF

i9-7980XE
Test#1 (Integers)
174.66k
560.19k (x3.21)
Test#2 (FP)
154.06k
516.97k (x3.36)
Test#3 (Generic, ZIP)
34.11k
123.94k (x3.63)
Test#1 (Memory)
8.24k
22.69k (x2.75)
TOTAL
371.08k
1223.79k (x3.3)

Performance/W
i5-9600KF
i9-7980XE
Test#1 (Integers)
1839 points/W
3395 points/W
Test#2 (FP)
1622 points/W
3133 points/W
Test#3 (Generic, ZIP)
359 points/W
751 points/W
Test#1 (Memory)
87 points/W
137 points/W
TOTAL
3906 points/W
7417 points/W

Performance/GHz
i5-9600KF
i9-7980XE
Test#1 (Integers)
6635 points/GHz
7081 points/GHz
Test#2 (FP)
5769 points/GHz
6392 points/GHz
Test#3 (Generic, ZIP)
1394 points/GHz
1512 points/GHz
Test#1 (Memory)
3015 points/GHz
2386 points/GHz
TOTAL
16813 points/GHz
17371 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