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Core i9-11900K vs i9-10900X


Description
The i9-11900K is based on Rocket Lake architecture while the i9-10900X is based on Cascade Lake.

Using the multithread performance as a reference, the i9-11900K gets a score of 748 k points while the i9-10900X gets 632.4 k points.

Summarizing, the i9-11900K is 1.2 times faster than the i9-10900X. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
a0671
50657
Core
Rocket Lake-S
Cascade Lake-X
Architecture
Base frecuency
3.5 GHz
3.7 GHz
Boost frecuency
5.3 GHz
4.7 GHz
Socket
LGA 1200
LGA 2066
Cores/Threads
8/16
10/20
TDP
125 W
165 W
Cache L1 (d+i)
8x32+8x48 kB
10x32+10x32 kB
Cache L2
8x512 kB
10x1024 kB
Cache L3
16386 kB
19712 kB
Date
March 2021
November 2019
Mean monothread perf.
101.11k points
62.28k points
Mean multithread perf.
748.02k points
632.35k 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
i9-10900X
Test#1 (Integers)
36.08k
25.97k (x0.72)
Test#2 (FP)
30.19k
22.37k (x0.74)
Test#3 (Generic, ZIP)
12.96k
5.3k (x0.41)
Test#1 (Memory)
21.88k
8.63k (x0.39)
TOTAL
101.11k
62.28k (x0.62)

Multithread

i9-11900K

i9-10900X
Test#1 (Integers)
311.76k
281.98k (x0.9)
Test#2 (FP)
314.01k
259.01k (x0.82)
Test#3 (Generic, ZIP)
112.23k
64.87k (x0.58)
Test#1 (Memory)
10.02k
26.5k (x2.64)
TOTAL
748.02k
632.35k (x0.85)

Performance/W
i9-11900K
i9-10900X
Test#1 (Integers)
2494 points/W
1709 points/W
Test#2 (FP)
2512 points/W
1570 points/W
Test#3 (Generic, ZIP)
898 points/W
393 points/W
Test#1 (Memory)
80 points/W
161 points/W
TOTAL
5984 points/W
3832 points/W

Performance/GHz
i9-11900K
i9-10900X
Test#1 (Integers)
6807 points/GHz
5526 points/GHz
Test#2 (FP)
5695 points/GHz
4760 points/GHz
Test#3 (Generic, ZIP)
2446 points/GHz
1128 points/GHz
Test#1 (Memory)
4129 points/GHz
1835 points/GHz
TOTAL
19077 points/GHz
13250 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