Core i9-9900KF vs i9-9900K
Description
Both models i9-9900KF 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 i9-9900KF gets a score of 592.9 k points while the i9-9900K gets 545.3 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 i9-9900KF gets a score of 592.9 k points while the i9-9900K gets 545.3 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
906ed
906ec
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
16386 kB
16384 kB
Date
January 2019
October 2018
Mean monothread perf.
84.54k points
86.24k points
Mean multithread perf.
592.86k points
545.3k 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
i9-9900KF
i9-9900K
Test#1 (Integers)
33.03k
33.62k (x1.02)
Test#2 (FP)
29.52k
30.02k (x1.02)
Test#3 (Generic, ZIP)
6.55k
7.17k (x1.09)
Test#1 (Memory)
15.45k
15.43k (x1)
TOTAL
84.54k
86.24k (x1.02)
Multithread
i9-9900KF
i9-9900K
Test#1 (Integers)
276.22k
248.93k (x0.9)
Test#2 (FP)
250.61k
224.43k (x0.9)
Test#3 (Generic, ZIP)
57.2k
53.39k (x0.93)
Test#1 (Memory)
8.84k
18.54k (x2.1)
TOTAL
592.86k
545.3k (x0.92)
Performance/W
i9-9900KF
i9-9900K
Test#1 (Integers)
2908 points/W
2620 points/W
Test#2 (FP)
2638 points/W
2362 points/W
Test#3 (Generic, ZIP)
602 points/W
562 points/W
Test#1 (Memory)
93 points/W
195 points/W
TOTAL
6241 points/W
5740 points/W
Performance/GHz
i9-9900KF
i9-9900K
Test#1 (Integers)
6605 points/GHz
6724 points/GHz
Test#2 (FP)
5904 points/GHz
6003 points/GHz
Test#3 (Generic, ZIP)
1309 points/GHz
1434 points/GHz
Test#1 (Memory)
3090 points/GHz
3087 points/GHz
TOTAL
16909 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.
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