Core i7-9700K vs i5-9400F
Description
Both models i7-9700K and i5-9400F 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 i5-9400F gets 331.2 k points.
Summarizing, the i7-9700K is 1.5 times faster than the i5-9400F. 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 i5-9400F gets 331.2 k points.
Summarizing, the i7-9700K is 1.5 times faster than the i5-9400F. To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
906ed
906ea
Core
Coffee Lake-S
Coffee Lake-S
Base frecuency
3.6 GHz
2.9 GHz
Boost frecuency
4.9 GHz
4.1 GHz
Socket
LGA 1151
LGA 1151
Cores/Threads
8/8
6/6
TDP
95 W
65 W
Cache L1 (d+i)
8x32+8x32 kB
6x32+6x32 kB
Cache L2
8x256 kB
6x256 kB
Cache L3
12288 kB
9216 kB
Date
October 2018
January 2019
Mean monothread perf.
81.96k points
67.77k points
Mean multithread perf.
494.38k points
331.19k 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
i7-9700K
i5-9400F
Test#1 (Integers)
32.45k
27.15k (x0.84)
Test#2 (FP)
28.3k
23.63k (x0.83)
Test#3 (Generic, ZIP)
6.27k
5.38k (x0.86)
Test#1 (Memory)
14.93k
11.61k (x0.78)
TOTAL
81.96k
67.77k (x0.83)
Multithread
i7-9700K
i5-9400F
Test#1 (Integers)
244.31k
156.61k (x0.64)
Test#2 (FP)
199.72k
138k (x0.69)
Test#3 (Generic, ZIP)
43.15k
29.45k (x0.68)
Test#1 (Memory)
7.2k
7.14k (x0.99)
TOTAL
494.38k
331.19k (x0.67)
Performance/W
i7-9700K
i5-9400F
Test#1 (Integers)
2572 points/W
2409 points/W
Test#2 (FP)
2102 points/W
2123 points/W
Test#3 (Generic, ZIP)
454 points/W
453 points/W
Test#1 (Memory)
76 points/W
110 points/W
TOTAL
5204 points/W
5095 points/W
Performance/GHz
i7-9700K
i5-9400F
Test#1 (Integers)
6623 points/GHz
6622 points/GHz
Test#2 (FP)
5776 points/GHz
5763 points/GHz
Test#3 (Generic, ZIP)
1281 points/GHz
1312 points/GHz
Test#1 (Memory)
3047 points/GHz
2831 points/GHz
TOTAL
16726 points/GHz
16528 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