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Ryzen 9 3950X vs Ryzen 7 7840HS


Description
The 3950X is based on Zen 2 architecture while the 7840HS is based on Zen 4.

Using the multithread performance as a reference, the 3950X gets a score of 959.8 k points while the 7840HS gets 622.3 k points.

Summarizing, the 3950X is 1.5 times faster than the 7840HS. 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
3.5 GHz
3.8 GHz
Boost frecuency
4.7 GHz
5.1 GHz
Socket
AM4
BGA-FP7r2
Cores/Threads
16/32
8/16
TDP
105 W
35 W
Cache L1 (d+i)
16x32+16x32 kB
8x32+8x32 kB
Cache L2
16x512 kB
8x1024 kB
Cache L3
4x16384 kB
16384 kB
Date
November 2019
January 2023
Mean monothread perf.
72.95k points
91.11k points
Mean multithread perf.
959.77k points
622.34k 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
3950X
7840HS
Test#1 (Integers)
16.49k
31.57k (x1.91)
Test#2 (FP)
26.16k
25.2k (x0.96)
Test#3 (Generic, ZIP)
7.9k
12.42k (x1.57)
Test#1 (Memory)
22.4k
21.93k (x0.98)
TOTAL
72.95k
91.11k (x1.25)

Multithread

3950X

7840HS
Test#1 (Integers)
334.49k
265.26k (x0.79)
Test#2 (FP)
423.74k
226.13k (x0.53)
Test#3 (Generic, ZIP)
187.85k
114.46k (x0.61)
Test#1 (Memory)
13.69k
16.49k (x1.2)
TOTAL
959.77k
622.34k (x0.65)

Performance/W
3950X
7840HS
Test#1 (Integers)
3186 points/W
7579 points/W
Test#2 (FP)
4036 points/W
6461 points/W
Test#3 (Generic, ZIP)
1789 points/W
3270 points/W
Test#1 (Memory)
130 points/W
471 points/W
TOTAL
9141 points/W
17781 points/W

Performance/GHz
3950X
7840HS
Test#1 (Integers)
3509 points/GHz
6190 points/GHz
Test#2 (FP)
5566 points/GHz
4941 points/GHz
Test#3 (Generic, ZIP)
1681 points/GHz
2436 points/GHz
Test#1 (Memory)
4765 points/GHz
4299 points/GHz
TOTAL
15522 points/GHz
17866 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