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Ryzen 7 3800X vs Ryzen 9 7940HS


Description
The 3800X is based on Zen 2 architecture while the 7940HS is based on Zen 4.

Using the multithread performance as a reference, the 3800X gets a score of 497.7 k points while the 7940HS gets 678.5 k points.

Summarizing, the 7940HS is 1.4 times faster than the 3800X. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
870f10
a70f41
Core
Matisse
Phoenix
Architecture
Zen 2
Base frecuency
3.9 GHz
4 GHz
Boost frecuency
4.5 GHz
5.2 GHz
Socket
AM4
BGA-FP7r2
Cores/Threads
8/16
8/16
TDP
105 W
35 W
Cache L1 (d+i)
8x32+8x32 kB
8x32+8x32 kB
Cache L2
8x512 kB
8x1024 kB
Cache L3
32768 kB
16384 kB
Date
July 2019
March 2023
Mean monothread perf.
75.81k points
107.71k points
Mean multithread perf.
497.74k points
678.46k 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
3800X
7940HS
Test#1 (Integers)
17.1k
37.07k (x2.17)
Test#2 (FP)
26.59k
29.49k (x1.11)
Test#3 (Generic, ZIP)
8.91k
14.86k (x1.67)
Test#1 (Memory)
23.21k
26.29k (x1.13)
TOTAL
75.81k
107.71k (x1.42)

Multithread

3800X

7940HS
Test#1 (Integers)
172.04k
286.22k (x1.66)
Test#2 (FP)
214.03k
254.32k (x1.19)
Test#3 (Generic, ZIP)
97.1k
123.23k (x1.27)
Test#1 (Memory)
14.57k
14.69k (x1.01)
TOTAL
497.74k
678.46k (x1.36)

Performance/W
3800X
7940HS
Test#1 (Integers)
1638 points/W
8178 points/W
Test#2 (FP)
2038 points/W
7266 points/W
Test#3 (Generic, ZIP)
925 points/W
3521 points/W
Test#1 (Memory)
139 points/W
420 points/W
TOTAL
4740 points/W
19385 points/W

Performance/GHz
3800X
7940HS
Test#1 (Integers)
3799 points/GHz
7129 points/GHz
Test#2 (FP)
5909 points/GHz
5671 points/GHz
Test#3 (Generic, ZIP)
1981 points/GHz
2858 points/GHz
Test#1 (Memory)
5158 points/GHz
5055 points/GHz
TOTAL
16847 points/GHz
20713 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