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Core i9-12900KF vs i5-12400


Description
Both models i9-12900KF and i5-12400 are based on Alder Lake architecture.

Alder Lake is the 12th generation of Intel Core. It uses the 10nm proccess and was the first to introduce a hybrid architecture with Performance cores and Efficiency cores.

Using the multithread performance as a reference, the i9-12900KF gets a score of 1219.3 k points while the i5-12400 gets 544.6 k points.

Summarizing, the i9-12900KF is 2.2 times faster than the i5-12400. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
90672
90672
Core
Alder Lake-S
Arder Lake-S
Architecture
Base frecuency
3.2 GHz
2.5 GHz
Boost frecuency
5.2 GHz
4.4 GHz
Socket
LGA 1700
LGA 1700
Cores/Threads
16/24
6/12
TDP
125 W
65 W
Cache L1 (d+i)
8x32/8x64+8x48/8x32 kB
6x32+6x48 kB
Cache L2
8x1280+8x2048 kB
6x1280 kB
Cache L3
30720 kB
18432 kB
Date
November 2021
January 2022
Mean monothread perf.
120.97k points
102.51k points
Mean multithread perf.
1219.33k points
544.64k points

AVX optimized benchmark
The benchmark in mode II (AVX) is optimized to used 256 bits registers beside the first version of the Advanced Vector Extensions (AVX). The first AVX compatible CPU was released in 2011.
Monothread
i9-12900KF
i5-12400
Test#1 (Integers)
28.96k
23.84k (x0.82)
Test#2 (FP)
30k
25.09k (x0.84)
Test#3 (Generic, ZIP)
16.94k
14.1k (x0.83)
Test#1 (Memory)
17.14k
14.48k (x0.84)
TOTAL
93.05k
77.51k (x0.83)

Multithread

i9-12900KF

i5-12400
Test#1 (Integers)
166.25k
123.98k (x0.75)
Test#2 (FP)
172.03k
176.89k (x1.03)
Test#3 (Generic, ZIP)
96.95k
97.42k (x1)
Test#1 (Memory)
55.78k
20.78k (x0.37)
TOTAL
491.01k
419.07k (x0.85)

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
i9-12900KF
i5-12400
Test#1 (Integers)
57.05k
48.08k (x0.84)
Test#2 (FP)
29.66k
25.6k (x0.86)
Test#3 (Generic, ZIP)
16.48k
14.02k (x0.85)
Test#1 (Memory)
17.78k
14.81k (x0.83)
TOTAL
120.97k
102.51k (x0.85)

Multithread

i9-12900KF

i5-12400
Test#1 (Integers)
546.04k
230.14k (x0.42)
Test#2 (FP)
437.01k
198.07k (x0.45)
Test#3 (Generic, ZIP)
211.36k
94.78k (x0.45)
Test#1 (Memory)
24.92k
21.64k (x0.87)
TOTAL
1219.33k
544.64k (x0.45)

Performance/W
i9-12900KF
i5-12400
Test#1 (Integers)
4368 points/W
3541 points/W
Test#2 (FP)
3496 points/W
3047 points/W
Test#3 (Generic, ZIP)
1691 points/W
1458 points/W
Test#1 (Memory)
199 points/W
333 points/W
TOTAL
9755 points/W
8379 points/W

Performance/GHz
i9-12900KF
i5-12400
Test#1 (Integers)
10972 points/GHz
10927 points/GHz
Test#2 (FP)
5704 points/GHz
5819 points/GHz
Test#3 (Generic, ZIP)
3170 points/GHz
3186 points/GHz
Test#1 (Memory)
3419 points/GHz
3365 points/GHz
TOTAL
23264 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