| | | | | | |

Ryzen 9 3900X vs Core i9-11900K


Description
The 3900X is based on Zen 2 architecture while the i9-11900K is based on Rocket Lake.

Using the multithread performance as a reference, the 3900X gets a score of 756.3 k points while the i9-11900K gets 788.9 k points.

Summarizing, the i9-11900K is 1 times faster than the 3900X. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
870f10
a0671
Core
Matisse
Rocket Lake-S
Architecture
Base frecuency
3.8 GHz
3.5 GHz
Boost frecuency
4.6 GHz
5.3 GHz
Socket
AM4
LGA 1200
Cores/Threads
12/24
8/16
TDP
105 W
125 W
Cache L1 (d+i)
12x32+12x32 kB
8x32+8x48 kB
Cache L2
12x512 kB
8x512 kB
Cache L3
4x16384 kB
16386 kB
Date
July 2019
March 2021
Mean monothread perf.
72.51k points
106.41k points
Mean multithread perf.
756.3k points
788.94k 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
3900X
i9-11900K
Test#1 (Integers)
16.73k
38.06k (x2.27)
Test#2 (FP)
24.74k
31.54k (x1.28)
Test#3 (Generic, ZIP)
8.82k
13.5k (x1.53)
Test#1 (Memory)
22.22k
23.3k (x1.05)
TOTAL
72.51k
106.41k (x1.47)

Multithread

3900X

i9-11900K
Test#1 (Integers)
248.24k
327.93k (x1.32)
Test#2 (FP)
309.66k
329.16k (x1.06)
Test#3 (Generic, ZIP)
140.01k
118.88k (x0.85)
Test#1 (Memory)
58.39k
12.98k (x0.22)
TOTAL
756.3k
788.94k (x1.04)

Performance/W
3900X
i9-11900K
Test#1 (Integers)
2364 points/W
2623 points/W
Test#2 (FP)
2949 points/W
2633 points/W
Test#3 (Generic, ZIP)
1333 points/W
951 points/W
Test#1 (Memory)
556 points/W
104 points/W
TOTAL
7203 points/W
6312 points/W

Performance/GHz
3900X
i9-11900K
Test#1 (Integers)
3638 points/GHz
7182 points/GHz
Test#2 (FP)
5377 points/GHz
5952 points/GHz
Test#3 (Generic, ZIP)
1917 points/GHz
2547 points/GHz
Test#1 (Memory)
4831 points/GHz
4397 points/GHz
TOTAL
15763 points/GHz
20077 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