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Core i9-11900KB vs i9-10900K


Description
The i9-11900KB is based on Tiger Lake architecture while the i9-10900K is based on Comet Lake.

Using the multithread performance as a reference, the i9-11900KB gets a score of 537.2 k points while the i9-10900K gets 685.6 k points.

Summarizing, the i9-10900K is 1.3 times faster than the i9-11900KB. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
806d1
a0655
Core
Tiger Lake-H
Comet Lake-S
Architecture
Base frecuency
3.3 GHz
3.7 GHz
Boost frecuency
4.9 GHz
5.2 GHz
Socket
BGA 1787
LGA 1200
Cores/Threads
8/16
10/20
TDP
65 W
125 W
Cache L1 (d+i)
8x32+8x48 kB
10x32+10x32 kB
Cache L2
8x1280 kB
10x256 kB
Cache L3
24576 kB
20480 kB
Date
July 2021
April 2020
Mean monothread perf.
63.79k points
80.41k points
Mean multithread perf.
537.18k points
685.65k 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
i9-11900KB
i9-10900K
Test#1 (Integers)
24.09k
32.67k (x1.36)
Test#2 (FP)
19.54k
28.49k (x1.46)
Test#3 (Generic, ZIP)
8.48k
6.53k (x0.77)
Test#1 (Memory)
11.68k
12.72k (x1.09)
TOTAL
63.79k
80.41k (x1.26)

Multithread

i9-11900KB

i9-10900K
Test#1 (Integers)
220.79k
307.39k (x1.39)
Test#2 (FP)
225.98k
298.47k (x1.32)
Test#3 (Generic, ZIP)
79.1k
72.94k (x0.92)
Test#1 (Memory)
11.32k
6.85k (x0.61)
TOTAL
537.18k
685.65k (x1.28)

Performance/W
i9-11900KB
i9-10900K
Test#1 (Integers)
3397 points/W
2459 points/W
Test#2 (FP)
3477 points/W
2388 points/W
Test#3 (Generic, ZIP)
1217 points/W
583 points/W
Test#1 (Memory)
174 points/W
55 points/W
TOTAL
8264 points/W
5485 points/W

Performance/GHz
i9-11900KB
i9-10900K
Test#1 (Integers)
4917 points/GHz
6282 points/GHz
Test#2 (FP)
3988 points/GHz
5479 points/GHz
Test#3 (Generic, ZIP)
1730 points/GHz
1257 points/GHz
Test#1 (Memory)
2384 points/GHz
2445 points/GHz
TOTAL
13018 points/GHz
15463 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