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Core i9-11900K vs Ryzen 9 7950X


Description
The i9-11900K is based on Rocket Lake architecture while the 7950X is based on Zen 4.

Using the multithread performance as a reference, the i9-11900K gets a score of 748 k points while the 7950X gets 1597.8 k points.

Summarizing, the 7950X is 2.1 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
a60f12
Core
Rocket Lake-S
Raphael
Architecture
Rocket Lake
Base frecuency
3.5 GHz
4.5 GHz
Boost frecuency
5.3 GHz
5.7 GHz
Socket
LGA 1200
AM5
Cores/Threads
8/16
16/32
TDP
125 W
170 W
Cache L1 (d+i)
8x32+8x48 kB
16x32+16x32 kB
Cache L2
8x512 kB
16x1024 kB
Cache L3
16386 kB
131072 kB
Date
March 2021
September 2022
Mean monothread perf.
101.11k points
121.33k points
Mean multithread perf.
748.02k points
1597.79k 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
7950X
Test#1 (Integers)
36.08k
40.61k (x1.13)
Test#2 (FP)
30.19k
31.82k (x1.05)
Test#3 (Generic, ZIP)
12.96k
16.63k (x1.28)
Test#1 (Memory)
21.88k
32.28k (x1.48)
TOTAL
101.11k
121.33k (x1.2)

Multithread

i9-11900K

7950X
Test#1 (Integers)
311.76k
683.17k (x2.19)
Test#2 (FP)
314.01k
563.45k (x1.79)
Test#3 (Generic, ZIP)
112.23k
286.77k (x2.56)
Test#1 (Memory)
10.02k
64.4k (x6.42)
TOTAL
748.02k
1597.79k (x2.14)

Performance/W
i9-11900K
7950X
Test#1 (Integers)
2494 points/W
4019 points/W
Test#2 (FP)
2512 points/W
3314 points/W
Test#3 (Generic, ZIP)
898 points/W
1687 points/W
Test#1 (Memory)
80 points/W
379 points/W
TOTAL
5984 points/W
9399 points/W

Performance/GHz
i9-11900K
7950X
Test#1 (Integers)
6807 points/GHz
7124 points/GHz
Test#2 (FP)
5695 points/GHz
5582 points/GHz
Test#3 (Generic, ZIP)
2446 points/GHz
2917 points/GHz
Test#1 (Memory)
4129 points/GHz
5663 points/GHz
TOTAL
19077 points/GHz
21286 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