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Ryzen 7 7840HS vs Core i5-11400


Description
The 7840HS is based on Zen 4 architecture while the i5-11400 is based on Rocket Lake.

Using the multithread performance as a reference, the 7840HS gets a score of 622.3 k points while the i5-11400 gets 489.3 k points.

Summarizing, the 7840HS is 1.3 times faster than the i5-11400. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
a70f41
a0671
Core
Phoenix
Rocket Lake-S
Architecture
Zen 4
Base frecuency
3.8 GHz
2.6 GHz
Boost frecuency
5.1 GHz
4.4 GHz
Socket
BGA-FP7r2
LGA 1200
Cores/Threads
8/16
6/12
TDP
35 W
65 W
Cache L1 (d+i)
8x32+8x32 kB
6x32+6x48 kB
Cache L2
8x1024 kB
6x512 kB
Cache L3
16384 kB
12288 kB
Date
January 2023
March 2021
Mean monothread perf.
91.11k points
86.11k points
Mean multithread perf.
622.34k points
489.31k 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
i5-11400
Test#1 (Integers)
31.57k
31.23k (x0.99)
Test#2 (FP)
25.2k
25.88k (x1.03)
Test#3 (Generic, ZIP)
12.42k
10.83k (x0.87)
Test#1 (Memory)
21.93k
18.17k (x0.83)
TOTAL
91.11k
86.11k (x0.95)

Multithread

7840HS

i5-11400
Test#1 (Integers)
265.26k
213.85k (x0.81)
Test#2 (FP)
226.13k
195.51k (x0.86)
Test#3 (Generic, ZIP)
114.46k
72.06k (x0.63)
Test#1 (Memory)
16.49k
7.89k (x0.48)
TOTAL
622.34k
489.31k (x0.79)

Performance/W
7840HS
i5-11400
Test#1 (Integers)
7579 points/W
3290 points/W
Test#2 (FP)
6461 points/W
3008 points/W
Test#3 (Generic, ZIP)
3270 points/W
1109 points/W
Test#1 (Memory)
471 points/W
121 points/W
TOTAL
17781 points/W
7528 points/W

Performance/GHz
7840HS
i5-11400
Test#1 (Integers)
6190 points/GHz
7098 points/GHz
Test#2 (FP)
4941 points/GHz
5881 points/GHz
Test#3 (Generic, ZIP)
2436 points/GHz
2461 points/GHz
Test#1 (Memory)
4299 points/GHz
4130 points/GHz
TOTAL
17866 points/GHz
19570 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