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Core i9-11900K vs i7-11800H


Description
The i9-11900K is based on Rocket Lake architecture while the i7-11800H is based on Tiger Lake.

Using the multithread performance as a reference, the i9-11900K gets a score of 788.9 k points while the i7-11800H gets 607.4 k points.

Summarizing, the i9-11900K is 1.3 times faster than the i7-11800H. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
a0671
806d1
Core
Rocket Lake-S
Tiger Lake-H
Architecture
Base frecuency
3.5 GHz
2.3 GHz
Boost frecuency
5.3 GHz
4.6 GHz
Socket
LGA 1200
BGA 1787
Cores/Threads
8/16
8/16
TDP
125 W
45 W
Cache L1 (d+i)
8x32+8x48 kB
8x32+8x48 kB
Cache L2
8x512 kB
8x1280 kB
Cache L3
16386 kB
24576 kB
Date
March 2021
May 2021
Mean monothread perf.
106.41k points
88.34k points
Mean multithread perf.
788.94k points
607.38k 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
i7-11800H
Test#1 (Integers)
38.06k
33.02k (x0.87)
Test#2 (FP)
31.54k
26.55k (x0.84)
Test#3 (Generic, ZIP)
13.5k
11.72k (x0.87)
Test#1 (Memory)
23.3k
17.06k (x0.73)
TOTAL
106.41k
88.34k (x0.83)

Multithread

i9-11900K

i7-11800H
Test#1 (Integers)
327.93k
260.97k (x0.8)
Test#2 (FP)
329.16k
248.94k (x0.76)
Test#3 (Generic, ZIP)
118.88k
86.55k (x0.73)
Test#1 (Memory)
12.98k
10.91k (x0.84)
TOTAL
788.94k
607.38k (x0.77)

Performance/W
i9-11900K
i7-11800H
Test#1 (Integers)
2623 points/W
5799 points/W
Test#2 (FP)
2633 points/W
5532 points/W
Test#3 (Generic, ZIP)
951 points/W
1923 points/W
Test#1 (Memory)
104 points/W
242 points/W
TOTAL
6312 points/W
13497 points/W

Performance/GHz
i9-11900K
i7-11800H
Test#1 (Integers)
7182 points/GHz
7177 points/GHz
Test#2 (FP)
5952 points/GHz
5771 points/GHz
Test#3 (Generic, ZIP)
2547 points/GHz
2547 points/GHz
Test#1 (Memory)
4397 points/GHz
3709 points/GHz
TOTAL
20077 points/GHz
19204 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