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Core i9-11900K vs Ryzen 9 3950X


Description
The i9-11900K is based on Rocket Lake architecture while the 3950X is based on Zen 2.

Using the multithread performance as a reference, the i9-11900K gets a score of 748 k points while the 3950X gets 959.8 k points.

Summarizing, the 3950X is 1.3 times faster than the i9-11900K. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
a0671
870f10
Core
Rocket Lake-S
Matisse
Architecture
Base frecuency
3.5 GHz
3.5 GHz
Boost frecuency
5.3 GHz
4.7 GHz
Socket
LGA 1200
AM4
Cores/Threads
8/16
16/32
TDP
125 W
105 W
Cache L1 (d+i)
8x32+8x48 kB
16x32+16x32 kB
Cache L2
8x512 kB
16x512 kB
Cache L3
16386 kB
4x16384 kB
Date
March 2021
November 2019
Mean monothread perf.
101.11k points
72.95k points
Mean multithread perf.
748.02k points
959.77k 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
3950X
Test#1 (Integers)
36.08k
16.49k (x0.46)
Test#2 (FP)
30.19k
26.16k (x0.87)
Test#3 (Generic, ZIP)
12.96k
7.9k (x0.61)
Test#1 (Memory)
21.88k
22.4k (x1.02)
TOTAL
101.11k
72.95k (x0.72)

Multithread

i9-11900K

3950X
Test#1 (Integers)
311.76k
334.49k (x1.07)
Test#2 (FP)
314.01k
423.74k (x1.35)
Test#3 (Generic, ZIP)
112.23k
187.85k (x1.67)
Test#1 (Memory)
10.02k
13.69k (x1.37)
TOTAL
748.02k
959.77k (x1.28)

Performance/W
i9-11900K
3950X
Test#1 (Integers)
2494 points/W
3186 points/W
Test#2 (FP)
2512 points/W
4036 points/W
Test#3 (Generic, ZIP)
898 points/W
1789 points/W
Test#1 (Memory)
80 points/W
130 points/W
TOTAL
5984 points/W
9141 points/W

Performance/GHz
i9-11900K
3950X
Test#1 (Integers)
6807 points/GHz
3509 points/GHz
Test#2 (FP)
5695 points/GHz
5566 points/GHz
Test#3 (Generic, ZIP)
2446 points/GHz
1681 points/GHz
Test#1 (Memory)
4129 points/GHz
4765 points/GHz
TOTAL
19077 points/GHz
15522 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