Core i9-9900K vs i9-9900KF
Description
Both models i9-9900K and i9-9900KF 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 i9-9900K gets a score of 545.3 k points while the i9-9900KF gets 592.9 k points.
Summarizing, the i9-9900KF is 1.1 times faster than the i9-9900K. To get a proper comparison between both models, take a look to the data shown below.
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 i9-9900K gets a score of 545.3 k points while the i9-9900KF gets 592.9 k points.
Summarizing, the i9-9900KF is 1.1 times faster than the i9-9900K. To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
906ec
906ed
Core
Coffee Lake-S
Coffee Lake-S
Base frecuency
3.6 GHz
3.6 GHz
Boost frecuency
5 GHz
5 GHz
Socket
LGA 1151
LGA 1151
Cores/Threads
8/16
8/16
TDP
95 W
95 W
Cache L1 (d+i)
8x32+8x32 kB
8x32+8x32 kB
Cache L2
8x256 kB
8x256 kB
Cache L3
16384 kB
16386 kB
Date
October 2018
January 2019
Mean monothread perf.
86.24k points
84.54k points
Mean multithread perf.
545.3k points
592.86k 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
i9-9900K
i9-9900KF
Test#1 (Integers)
33.62k
33.03k (x0.98)
Test#2 (FP)
30.02k
29.52k (x0.98)
Test#3 (Generic, ZIP)
7.17k
6.55k (x0.91)
Test#1 (Memory)
15.43k
15.45k (x1)
TOTAL
86.24k
84.54k (x0.98)
Multithread
i9-9900K
i9-9900KF
Test#1 (Integers)
248.93k
276.22k (x1.11)
Test#2 (FP)
224.43k
250.61k (x1.12)
Test#3 (Generic, ZIP)
53.39k
57.2k (x1.07)
Test#1 (Memory)
18.54k
8.84k (x0.48)
TOTAL
545.3k
592.86k (x1.09)
Performance/W
i9-9900K
i9-9900KF
Test#1 (Integers)
2620 points/W
2908 points/W
Test#2 (FP)
2362 points/W
2638 points/W
Test#3 (Generic, ZIP)
562 points/W
602 points/W
Test#1 (Memory)
195 points/W
93 points/W
TOTAL
5740 points/W
6241 points/W
Performance/GHz
i9-9900K
i9-9900KF
Test#1 (Integers)
6724 points/GHz
6605 points/GHz
Test#2 (FP)
6003 points/GHz
5904 points/GHz
Test#3 (Generic, ZIP)
1434 points/GHz
1309 points/GHz
Test#1 (Memory)
3087 points/GHz
3090 points/GHz
TOTAL
17247 points/GHz
16909 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.
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]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
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.
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]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
Hardlimit Benchmark Central - Ver. 3.11.4