| | | | | | |

Core i5-9600KF vs i9-9900K


Description
Both models i5-9600KF and i9-9900K are based on Coffee Lake architecture.

Coffee Lake is the second refinement of Intel’s 14nm (Tri-Gate) technology. While it uses LGA1151 socket, it is incompatible with previous generations due to electrical changes in socket’s pins so these CPUs require Z370 chipset. This kind of generation introduced more cores in every range to compete with new AMD’s architecture. Coffee Lake uses DDR4 memory at 2400MHz for i3 and at 2666MHz for i5, i7 CPUs plus iGPU frequency has been increased 50MHz with respect to previous generation.

Using the multithread performance as a reference, the i5-9600KF gets a score of 371.1 k points while the i9-9900K gets 545.3 k points.

Summarizing, the i9-9900K is 1.5 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
906ec
Core
Coffee Lake-S
Coffee Lake-S
Architecture
Base frecuency
3.7 GHz
3.6 GHz
Boost frecuency
4.6 GHz
5 GHz
Socket
LGA 1151
LGA 1151
Cores/Threads
6/6
8/16
TDP
95 W
95 W
Cache L1 (d+i)
6x32+6x32 kB
8x32+8x32 kB
Cache L2
6x256 kB
8x256 kB
Cache L3
9216 kB
16384 kB
Date
January 2019
October 2018
Mean monothread perf.
77.34k points
86.24k points
Mean multithread perf.
371.08k points
545.3k 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
i9-9900K
Test#1 (Integers)
4.63k
5.17k (x1.12)
Test#2 (FP)
19.43k
21.15k (x1.09)
Test#3 (Generic, ZIP)
6.17k
7.01k (x1.14)
Test#1 (Memory)
13.82k
15.32k (x1.11)
TOTAL
44.04k
48.66k (x1.1)

Multithread

i5-9600KF

i9-9900K
Test#1 (Integers)
26.64k
38.45k (x1.44)
Test#2 (FP)
110.11k
155.68k (x1.41)
Test#3 (Generic, ZIP)
33.07k
51k (x1.54)
Test#1 (Memory)
8.3k
18.26k (x2.2)
TOTAL
178.11k
263.38k (x1.48)

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
i9-9900K
Test#1 (Integers)
30.52k
33.62k (x1.1)
Test#2 (FP)
26.54k
30.02k (x1.13)
Test#3 (Generic, ZIP)
6.41k
7.17k (x1.12)
Test#1 (Memory)
13.87k
15.43k (x1.11)
TOTAL
77.34k
86.24k (x1.12)

Multithread

i5-9600KF

i9-9900K
Test#1 (Integers)
174.66k
248.93k (x1.43)
Test#2 (FP)
154.06k
224.43k (x1.46)
Test#3 (Generic, ZIP)
34.11k
53.39k (x1.57)
Test#1 (Memory)
8.24k
18.54k (x2.25)
TOTAL
371.08k
545.3k (x1.47)

Performance/W
i5-9600KF
i9-9900K
Test#1 (Integers)
1839 points/W
2620 points/W
Test#2 (FP)
1622 points/W
2362 points/W
Test#3 (Generic, ZIP)
359 points/W
562 points/W
Test#1 (Memory)
87 points/W
195 points/W
TOTAL
3906 points/W
5740 points/W

Performance/GHz
i5-9600KF
i9-9900K
Test#1 (Integers)
6635 points/GHz
6724 points/GHz
Test#2 (FP)
5769 points/GHz
6003 points/GHz
Test#3 (Generic, ZIP)
1394 points/GHz
1434 points/GHz
Test#1 (Memory)
3015 points/GHz
3087 points/GHz
TOTAL
16813 points/GHz
17247 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