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Core i9-9900K vs i5-11400


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

Using the multithread performance as a reference, the i9-9900K gets a score of 529.3 k points while the i5-11400 gets 489.3 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
906ed
a0671
Core
Coffee Lake-S
Rocket Lake-S
Architecture
Base frecuency
3.6 GHz
2.6 GHz
Boost frecuency
5 GHz
4.4 GHz
Socket
LGA 1151
LGA 1200
Cores/Threads
8/16
6/12
TDP
95 W
65 W
Cache L1 (d+i)
8x32+8x32 kB
6x32+6x48 kB
Cache L2
8x256 kB
6x512 kB
Cache L3
16384 kB
12288 kB
Date
October 2018
March 2021
Mean monothread perf.
81.91k points
86.11k points
Mean multithread perf.
529.32k points
489.31k 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
i9-9900K
i5-11400
Test#1 (Integers)
32.08k
31.23k (x0.97)
Test#2 (FP)
28.17k
25.88k (x0.92)
Test#3 (Generic, ZIP)
6.68k
10.83k (x1.62)
Test#1 (Memory)
14.98k
18.17k (x1.21)
TOTAL
81.91k
86.11k (x1.05)

Multithread

i9-9900K

i5-11400
Test#1 (Integers)
242.98k
213.85k (x0.88)
Test#2 (FP)
220.16k
195.51k (x0.89)
Test#3 (Generic, ZIP)
53.97k
72.06k (x1.34)
Test#1 (Memory)
12.22k
7.89k (x0.65)
TOTAL
529.32k
489.31k (x0.92)

Performance/W
i9-9900K
i5-11400
Test#1 (Integers)
2558 points/W
3290 points/W
Test#2 (FP)
2317 points/W
3008 points/W
Test#3 (Generic, ZIP)
568 points/W
1109 points/W
Test#1 (Memory)
129 points/W
121 points/W
TOTAL
5572 points/W
7528 points/W

Performance/GHz
i9-9900K
i5-11400
Test#1 (Integers)
6417 points/GHz
7098 points/GHz
Test#2 (FP)
5634 points/GHz
5881 points/GHz
Test#3 (Generic, ZIP)
1335 points/GHz
2461 points/GHz
Test#1 (Memory)
2996 points/GHz
4130 points/GHz
TOTAL
16382 points/GHz
19570 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