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Core i9-11900K vs i5-12400


Description
The i9-11900K is based on Rocket Lake architecture while the i5-12400 is based on Alder Lake.

Using the multithread performance as a reference, the i9-11900K gets a score of 748 k points while the i5-12400 gets 544.6 k points.

Summarizing, the i9-11900K is 1.4 times faster than the i5-12400. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
a0671
90672
Core
Rocket Lake-S
Arder Lake-S
Architecture
Base frecuency
3.5 GHz
2.5 GHz
Boost frecuency
5.3 GHz
4.4 GHz
Socket
LGA 1200
LGA 1700
Cores/Threads
8/16
6/12
TDP
125 W
65 W
Cache L1 (d+i)
8x32+8x48 kB
6x32+6x48 kB
Cache L2
8x512 kB
6x1280 kB
Cache L3
16386 kB
18432 kB
Date
March 2021
January 2022
Mean monothread perf.
101.11k points
102.51k points
Mean multithread perf.
748.02k points
544.64k 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
i9-11900K
i5-12400
Test#1 (Integers)
36.08k
48.08k (x1.33)
Test#2 (FP)
30.19k
25.6k (x0.85)
Test#3 (Generic, ZIP)
12.96k
14.02k (x1.08)
Test#1 (Memory)
21.88k
14.81k (x0.68)
TOTAL
101.11k
102.51k (x1.01)

Multithread

i9-11900K

i5-12400
Test#1 (Integers)
311.76k
230.14k (x0.74)
Test#2 (FP)
314.01k
198.07k (x0.63)
Test#3 (Generic, ZIP)
112.23k
94.78k (x0.84)
Test#1 (Memory)
10.02k
21.64k (x2.16)
TOTAL
748.02k
544.64k (x0.73)

Performance/W
i9-11900K
i5-12400
Test#1 (Integers)
2494 points/W
3541 points/W
Test#2 (FP)
2512 points/W
3047 points/W
Test#3 (Generic, ZIP)
898 points/W
1458 points/W
Test#1 (Memory)
80 points/W
333 points/W
TOTAL
5984 points/W
8379 points/W

Performance/GHz
i9-11900K
i5-12400
Test#1 (Integers)
6807 points/GHz
10927 points/GHz
Test#2 (FP)
5695 points/GHz
5819 points/GHz
Test#3 (Generic, ZIP)
2446 points/GHz
3186 points/GHz
Test#1 (Memory)
4129 points/GHz
3365 points/GHz
TOTAL
19077 points/GHz
23298 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