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Ryzen 7 7840HS vs Core i9-11900KB


Description
The 7840HS is based on Zen 4 architecture while the i9-11900KB is based on Tiger Lake.

Using the multithread performance as a reference, the 7840HS gets a score of 622.3 k points while the i9-11900KB gets 537.2 k points.

Summarizing, the 7840HS is 1.2 times faster than the i9-11900KB. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
a70f41
806d1
Core
Phoenix
Tiger Lake-H
Architecture
Zen 4
Base frecuency
3.8 GHz
3.3 GHz
Boost frecuency
5.1 GHz
4.9 GHz
Socket
BGA-FP7r2
BGA 1787
Cores/Threads
8/16
8/16
TDP
35 W
65 W
Cache L1 (d+i)
8x32+8x32 kB
8x32+8x48 kB
Cache L2
8x1024 kB
8x1280 kB
Cache L3
16384 kB
24576 kB
Date
January 2023
July 2021
Mean monothread perf.
91.11k points
63.79k points
Mean multithread perf.
622.34k points
537.18k 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
7840HS
i9-11900KB
Test#1 (Integers)
31.57k
24.09k (x0.76)
Test#2 (FP)
25.2k
19.54k (x0.78)
Test#3 (Generic, ZIP)
12.42k
8.48k (x0.68)
Test#1 (Memory)
21.93k
11.68k (x0.53)
TOTAL
91.11k
63.79k (x0.7)

Multithread

7840HS

i9-11900KB
Test#1 (Integers)
265.26k
220.79k (x0.83)
Test#2 (FP)
226.13k
225.98k (x1)
Test#3 (Generic, ZIP)
114.46k
79.1k (x0.69)
Test#1 (Memory)
16.49k
11.32k (x0.69)
TOTAL
622.34k
537.18k (x0.86)

Performance/W
7840HS
i9-11900KB
Test#1 (Integers)
7579 points/W
3397 points/W
Test#2 (FP)
6461 points/W
3477 points/W
Test#3 (Generic, ZIP)
3270 points/W
1217 points/W
Test#1 (Memory)
471 points/W
174 points/W
TOTAL
17781 points/W
8264 points/W

Performance/GHz
7840HS
i9-11900KB
Test#1 (Integers)
6190 points/GHz
4917 points/GHz
Test#2 (FP)
4941 points/GHz
3988 points/GHz
Test#3 (Generic, ZIP)
2436 points/GHz
1730 points/GHz
Test#1 (Memory)
4299 points/GHz
2384 points/GHz
TOTAL
17866 points/GHz
13018 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