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Core i5-11400 vs i9-9900K


Description
The i5-11400 is based on Rocket Lake architecture while the i9-9900K is based on Coffee Lake.

Using the multithread performance as a reference, the i5-11400 gets a score of 489.3 k points while the i9-9900K gets 545.3 k points.

Summarizing, the i9-9900K is 1.1 times faster than the i5-11400. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
a0671
906ec
Core
Rocket Lake-S
Coffee Lake-S
Architecture
Base frecuency
2.6 GHz
3.6 GHz
Boost frecuency
4.4 GHz
5 GHz
Socket
LGA 1200
LGA 1151
Cores/Threads
6/12
8/16
TDP
65 W
95 W
Cache L1 (d+i)
6x32+6x48 kB
8x32+8x32 kB
Cache L2
6x512 kB
8x256 kB
Cache L3
12288 kB
16384 kB
Date
March 2021
October 2018
Mean monothread perf.
86.11k points
86.24k points
Mean multithread perf.
489.31k 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
i5-11400
i9-9900K
Test#1 (Integers)
31.23k
33.62k (x1.08)
Test#2 (FP)
25.88k
30.02k (x1.16)
Test#3 (Generic, ZIP)
10.83k
7.17k (x0.66)
Test#1 (Memory)
18.17k
15.43k (x0.85)
TOTAL
86.11k
86.24k (x1)

Multithread

i5-11400

i9-9900K
Test#1 (Integers)
213.85k
248.93k (x1.16)
Test#2 (FP)
195.51k
224.43k (x1.15)
Test#3 (Generic, ZIP)
72.06k
53.39k (x0.74)
Test#1 (Memory)
7.89k
18.54k (x2.35)
TOTAL
489.31k
545.3k (x1.11)

Performance/W
i5-11400
i9-9900K
Test#1 (Integers)
3290 points/W
2620 points/W
Test#2 (FP)
3008 points/W
2362 points/W
Test#3 (Generic, ZIP)
1109 points/W
562 points/W
Test#1 (Memory)
121 points/W
195 points/W
TOTAL
7528 points/W
5740 points/W

Performance/GHz
i5-11400
i9-9900K
Test#1 (Integers)
7098 points/GHz
6724 points/GHz
Test#2 (FP)
5881 points/GHz
6003 points/GHz
Test#3 (Generic, ZIP)
2461 points/GHz
1434 points/GHz
Test#1 (Memory)
4130 points/GHz
3087 points/GHz
TOTAL
19570 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.


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