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Core i5-10400F vs i9-9900K


Description
The i5-10400F is based on Comet Lake architecture while the i9-9900K is based on Coffee Lake.

Using the multithread performance as a reference, the i5-10400F gets a score of 370 k points while the i9-9900K gets 529.3 k points.

Summarizing, the i9-9900K is 1.4 times faster than the i5-10400F. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
a0653
906ed
Core
Comet Lake-S
Coffee Lake-S
Architecture
Base frecuency
2.9 GHz
3.6 GHz
Boost frecuency
4.3 GHz
5 GHz
Socket
LGA 1200
LGA 1151
Cores/Threads
6/12
8/16
TDP
65 W
95 W
Cache L1 (d+i)
6x32+6x32 kB
8x32+8x32 kB
Cache L2
6x256 kB
8x256 kB
Cache L3
12288 kB
16384 kB
Date
April 2020
October 2018
Mean monothread perf.
68.14k points
81.91k points
Mean multithread perf.
369.97k points
529.32k 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
i5-10400F
i9-9900K
Test#1 (Integers)
4.3k
5k (x1.16)
Test#2 (FP)
16.56k
20.22k (x1.22)
Test#3 (Generic, ZIP)
5.25k
6.54k (x1.25)
Test#1 (Memory)
12.61k
13.78k (x1.09)
TOTAL
38.72k
45.53k (x1.18)

Multithread

i5-10400F

i9-9900K
Test#1 (Integers)
18.1k
36.39k (x2.01)
Test#2 (FP)
79.16k
166.55k (x2.1)
Test#3 (Generic, ZIP)
26.75k
54.92k (x2.05)
Test#1 (Memory)
13.81k
8.96k (x0.65)
TOTAL
137.82k
266.82k (x1.94)

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
i5-10400F
i9-9900K
Test#1 (Integers)
26.28k
32.08k (x1.22)
Test#2 (FP)
23.38k
28.17k (x1.2)
Test#3 (Generic, ZIP)
5.52k
6.68k (x1.21)
Test#1 (Memory)
12.96k
14.98k (x1.16)
TOTAL
68.14k
81.91k (x1.2)

Multithread

i5-10400F

i9-9900K
Test#1 (Integers)
163.67k
242.98k (x1.48)
Test#2 (FP)
159.74k
220.16k (x1.38)
Test#3 (Generic, ZIP)
39k
53.97k (x1.38)
Test#1 (Memory)
7.56k
12.22k (x1.62)
TOTAL
369.97k
529.32k (x1.43)

Performance/W
i5-10400F
i9-9900K
Test#1 (Integers)
2518 points/W
2558 points/W
Test#2 (FP)
2457 points/W
2317 points/W
Test#3 (Generic, ZIP)
600 points/W
568 points/W
Test#1 (Memory)
116 points/W
129 points/W
TOTAL
5692 points/W
5572 points/W

Performance/GHz
i5-10400F
i9-9900K
Test#1 (Integers)
6112 points/GHz
6417 points/GHz
Test#2 (FP)
5438 points/GHz
5634 points/GHz
Test#3 (Generic, ZIP)
1283 points/GHz
1335 points/GHz
Test#1 (Memory)
3014 points/GHz
2996 points/GHz
TOTAL
15847 points/GHz
16382 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