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Core i9-11900KB vs i7-12800H


Description
The i9-11900KB is based on Tiger Lake architecture while the i7-12800H is based on Alder Lake.

Using the multithread performance as a reference, the i9-11900KB gets a score of 537.2 k points while the i7-12800H gets 467.4 k points.

Summarizing, the i9-11900KB is 1.1 times faster than the i7-12800H. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
806d1
906a3
Core
Tiger Lake-H
Alder Lake-H
Architecture
Base frecuency
3.3 GHz
2.4 GHz
Boost frecuency
4.9 GHz
4.8 GHz
Socket
BGA 1787
BGA 1744
Cores/Threads
8/16
14/20
TDP
65 W
45 W
Cache L1 (d+i)
8x32+8x48 kB
6x32/8x64+6x48/8x32 kB
Cache L2
8x1280 kB
6x1280/2x2048 kB
Cache L3
24576 kB
24576 kB
Date
July 2021
February 2022
Mean monothread perf.
63.79k points
67.13k points
Mean multithread perf.
537.18k points
467.41k 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
i7-12800H
Test#1 (Integers)
24.09k
28.42k (x1.18)
Test#2 (FP)
19.54k
18.93k (x0.97)
Test#3 (Generic, ZIP)
8.48k
9.92k (x1.17)
Test#1 (Memory)
11.68k
9.86k (x0.84)
TOTAL
63.79k
67.13k (x1.05)

Multithread

i9-11900KB

i7-12800H
Test#1 (Integers)
220.79k
205.57k (x0.93)
Test#2 (FP)
225.98k
159.7k (x0.71)
Test#3 (Generic, ZIP)
79.1k
82.78k (x1.05)
Test#1 (Memory)
11.32k
19.36k (x1.71)
TOTAL
537.18k
467.41k (x0.87)

Performance/W
i9-11900KB
i7-12800H
Test#1 (Integers)
3397 points/W
4568 points/W
Test#2 (FP)
3477 points/W
3549 points/W
Test#3 (Generic, ZIP)
1217 points/W
1840 points/W
Test#1 (Memory)
174 points/W
430 points/W
TOTAL
8264 points/W
10387 points/W

Performance/GHz
i9-11900KB
i7-12800H
Test#1 (Integers)
4917 points/GHz
5921 points/GHz
Test#2 (FP)
3988 points/GHz
3944 points/GHz
Test#3 (Generic, ZIP)
1730 points/GHz
2066 points/GHz
Test#1 (Memory)
2384 points/GHz
2055 points/GHz
TOTAL
13018 points/GHz
13986 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