Core i7-9700K vs i9-9900KF
Description
Both models i7-9700K 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 i7-9700K gets a score of 494.4 k points while the i9-9900KF gets 560.4 k points.
Summarizing, the i9-9900KF is 1.1 times faster than the i7-9700K. 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 i7-9700K gets a score of 494.4 k points while the i9-9900KF gets 560.4 k points.
Summarizing, the i9-9900KF is 1.1 times faster than the i7-9700K. To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
906ed
906ed
Core
Coffee Lake-S
Coffee Lake-S
Base frecuency
3.6 GHz
3.6 GHz
Boost frecuency
4.9 GHz
5 GHz
Socket
LGA 1151
LGA 1151
Cores/Threads
8/8
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
12288 kB
16386 kB
Date
October 2018
January 2019
Mean monothread perf.
81.96k points
84.62k points
Mean multithread perf.
494.38k points
560.37k 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
i7-9700K
i9-9900KF
Test#1 (Integers)
4.97k
5.1k (x1.03)
Test#2 (FP)
17.98k
18.6k (x1.03)
Test#3 (Generic, ZIP)
5.89k
6.21k (x1.05)
Test#1 (Memory)
14.49k
15.39k (x1.06)
TOTAL
43.32k
45.3k (x1.05)
Multithread
i7-9700K
i9-9900KF
Test#1 (Integers)
37.81k
41.08k (x1.09)
Test#2 (FP)
138.05k
156.9k (x1.14)
Test#3 (Generic, ZIP)
41.78k
56.41k (x1.35)
Test#1 (Memory)
7.13k
8.57k (x1.2)
TOTAL
224.77k
262.96k (x1.17)
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
i7-9700K
i9-9900KF
Test#1 (Integers)
32.45k
33.03k (x1.02)
Test#2 (FP)
28.3k
29.54k (x1.04)
Test#3 (Generic, ZIP)
6.27k
6.56k (x1.05)
Test#1 (Memory)
14.93k
15.49k (x1.04)
TOTAL
81.96k
84.62k (x1.03)
Multithread
i7-9700K
i9-9900KF
Test#1 (Integers)
244.31k
259.64k (x1.06)
Test#2 (FP)
199.72k
236.58k (x1.18)
Test#3 (Generic, ZIP)
43.15k
53.37k (x1.24)
Test#1 (Memory)
7.2k
10.78k (x1.5)
TOTAL
494.38k
560.37k (x1.13)
Performance/W
i7-9700K
i9-9900KF
Test#1 (Integers)
2572 points/W
2733 points/W
Test#2 (FP)
2102 points/W
2490 points/W
Test#3 (Generic, ZIP)
454 points/W
562 points/W
Test#1 (Memory)
76 points/W
113 points/W
TOTAL
5204 points/W
5899 points/W
Performance/GHz
i7-9700K
i9-9900KF
Test#1 (Integers)
6623 points/GHz
6606 points/GHz
Test#2 (FP)
5776 points/GHz
5908 points/GHz
Test#3 (Generic, ZIP)
1281 points/GHz
1313 points/GHz
Test#1 (Memory)
3047 points/GHz
3099 points/GHz
TOTAL
16726 points/GHz
16925 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