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Ryzen 9 3900X vs Core i5-12400


Description
The 3900X is based on Zen 2 architecture while the i5-12400 is based on Alder Lake.

Using the multithread performance as a reference, the 3900X gets a score of 756.3 k points while the i5-12400 gets 544.6 k points.

Summarizing, the 3900X 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
870f10
90672
Core
Matisse
Arder Lake-S
Architecture
Base frecuency
3.8 GHz
2.5 GHz
Boost frecuency
4.6 GHz
4.4 GHz
Socket
AM4
LGA 1700
Cores/Threads
12/24
6/12
TDP
105 W
65 W
Cache L1 (d+i)
12x32+12x32 kB
6x32+6x48 kB
Cache L2
12x512 kB
6x1280 kB
Cache L3
4x16384 kB
18432 kB
Date
July 2019
January 2022
Mean monothread perf.
72.51k points
102.51k points
Mean multithread perf.
756.3k points
544.64k 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
3900X
i5-12400
Test#1 (Integers)
4.46k
7.51k (x1.68)
Test#2 (FP)
18.46k
18.66k (x1.01)
Test#3 (Generic, ZIP)
8.05k
13.32k (x1.66)
Test#1 (Memory)
23.71k
14.8k (x0.62)
TOTAL
54.68k
54.29k (x0.99)

Multithread

3900X

i5-12400
Test#1 (Integers)
52.65k
35.52k (x0.67)
Test#2 (FP)
265.41k
138.43k (x0.52)
Test#3 (Generic, ZIP)
140.78k
85.55k (x0.61)
Test#1 (Memory)
46.91k
21.72k (x0.46)
TOTAL
505.76k
281.22k (x0.56)

SSE3 optimized benchmark
The benchmark in mode I (SSE) is optimized for the use of SIMD instructions with 128 bits register and the SSE set up to version 3. Nearly every modern CPU has support for this mode.
Monothread
3900X
i5-12400
Test#1 (Integers)
17.35k
24.24k (x1.4)
Test#2 (FP)
25.87k
23.92k (x0.92)
Test#3 (Generic, ZIP)
8.72k
14.43k (x1.66)
Test#1 (Memory)
27.86k
14.84k (x0.53)
TOTAL
79.8k
77.43k (x0.97)

Multithread

3900X

i5-12400
Test#1 (Integers)
201.57k
124.33k (x0.62)
Test#2 (FP)
284.41k
168.8k (x0.59)
Test#3 (Generic, ZIP)
145.16k
100k (x0.69)
Test#1 (Memory)
100.56k
21.2k (x0.21)
TOTAL
731.7k
414.33k (x0.57)

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
3900X
i5-12400
Test#1 (Integers)
16.95k
23.84k (x1.41)
Test#2 (FP)
25.37k
25.09k (x0.99)
Test#3 (Generic, ZIP)
9.23k
14.1k (x1.53)
Test#1 (Memory)
24.83k
14.48k (x0.58)
TOTAL
76.38k
77.51k (x1.01)

Multithread

3900X

i5-12400
Test#1 (Integers)
196.31k
123.98k (x0.63)
Test#2 (FP)
290.5k
176.89k (x0.61)
Test#3 (Generic, ZIP)
143.95k
97.42k (x0.68)
Test#1 (Memory)
64.92k
20.78k (x0.32)
TOTAL
695.69k
419.07k (x0.6)

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
3900X
i5-12400
Test#1 (Integers)
16.73k
48.08k (x2.87)
Test#2 (FP)
24.74k
25.6k (x1.04)
Test#3 (Generic, ZIP)
8.82k
14.02k (x1.59)
Test#1 (Memory)
22.22k
14.81k (x0.67)
TOTAL
72.51k
102.51k (x1.41)

Multithread

3900X

i5-12400
Test#1 (Integers)
248.24k
230.14k (x0.93)
Test#2 (FP)
309.66k
198.07k (x0.64)
Test#3 (Generic, ZIP)
140.01k
94.78k (x0.68)
Test#1 (Memory)
58.39k
21.64k (x0.37)
TOTAL
756.3k
544.64k (x0.72)

Performance/W
3900X
i5-12400
Test#1 (Integers)
2364 points/W
3541 points/W
Test#2 (FP)
2949 points/W
3047 points/W
Test#3 (Generic, ZIP)
1333 points/W
1458 points/W
Test#1 (Memory)
556 points/W
333 points/W
TOTAL
7203 points/W
8379 points/W

Performance/GHz
3900X
i5-12400
Test#1 (Integers)
3638 points/GHz
10927 points/GHz
Test#2 (FP)
5377 points/GHz
5819 points/GHz
Test#3 (Generic, ZIP)
1917 points/GHz
3186 points/GHz
Test#1 (Memory)
4831 points/GHz
3365 points/GHz
TOTAL
15763 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