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Ryzen 9 3950X vs Core i9-12900K


Description
The 3950X is based on Zen 2 architecture while the i9-12900K is based on Alder Lake.

Using the multithread performance as a reference, the 3950X gets a score of 959.8 k points while the i9-12900K gets 1131.6 k points.

Summarizing, the i9-12900K is 1.2 times faster than the 3950X. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
870f10
90672
Core
Matisse
Alder Lake
Architecture
Base frecuency
3.5 GHz
2.4 GHz
Boost frecuency
4.7 GHz
5.2 GHz
Socket
AM4
LGA 1700
Cores/Threads
16/32
16/24
TDP
105 W
241 W
Cache L1 (d+i)
16x32+16x32 kB
8x32/8x64+8x48/8x32 kB
Cache L2
16x512 kB
8x1280+8x2048 kB
Cache L3
4x16384 kB
30720 kB
Date
November 2019
November 2021
Mean monothread perf.
72.95k points
109.05k points
Mean multithread perf.
959.77k points
1131.59k 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
3950X
i9-12900K
Test#1 (Integers)
16.49k
47.92k (x2.91)
Test#2 (FP)
26.16k
30.1k (x1.15)
Test#3 (Generic, ZIP)
7.9k
15.65k (x1.98)
Test#1 (Memory)
22.4k
15.38k (x0.69)
TOTAL
72.95k
109.05k (x1.49)

Multithread

3950X

i9-12900K
Test#1 (Integers)
334.49k
502.11k (x1.5)
Test#2 (FP)
423.74k
414.67k (x0.98)
Test#3 (Generic, ZIP)
187.85k
192.52k (x1.02)
Test#1 (Memory)
13.69k
22.3k (x1.63)
TOTAL
959.77k
1131.59k (x1.18)

Performance/W
3950X
i9-12900K
Test#1 (Integers)
3186 points/W
2083 points/W
Test#2 (FP)
4036 points/W
1721 points/W
Test#3 (Generic, ZIP)
1789 points/W
799 points/W
Test#1 (Memory)
130 points/W
93 points/W
TOTAL
9141 points/W
4695 points/W

Performance/GHz
3950X
i9-12900K
Test#1 (Integers)
3509 points/GHz
9216 points/GHz
Test#2 (FP)
5566 points/GHz
5789 points/GHz
Test#3 (Generic, ZIP)
1681 points/GHz
3009 points/GHz
Test#1 (Memory)
4765 points/GHz
2957 points/GHz
TOTAL
15522 points/GHz
20971 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