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Ryzen 9 5900X vs 3950X


Description
The 5900X is based on Zen 3 architecture while the 3950X is based on Zen 2.

Using the multithread performance as a reference, the 5900X gets a score of 840.1 k points while the 3950X gets 959.8 k points.

Summarizing, the 3950X is 1.1 times faster than the 5900X. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
a20f10
870f10
Core
Vermeer
Matisse
Architecture
Base frecuency
3.7 GHz
3.5 GHz
Boost frecuency
4.8 GHz
4.7 GHz
Socket
AM4
AM4
Cores/Threads
12/24
16/32
TDP
105 W
105 W
Cache L1 (d+i)
12x32+12x32 kB
16x32+16x32 kB
Cache L2
12x512 kB
16x512 kB
Cache L3
2x32768 kB
4x16384 kB
Date
November 2020
November 2019
Mean monothread perf.
89.82k points
72.95k points
Mean multithread perf.
840.11k points
959.77k 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
5900X
3950X
Test#1 (Integers)
24.34k
16.49k (x0.68)
Test#2 (FP)
26.8k
26.16k (x0.98)
Test#3 (Generic, ZIP)
12.12k
7.9k (x0.65)
Test#1 (Memory)
26.55k
22.4k (x0.84)
TOTAL
89.82k
72.95k (x0.81)

Multithread

5900X

3950X
Test#1 (Integers)
263.12k
334.49k (x1.27)
Test#2 (FP)
353.9k
423.74k (x1.2)
Test#3 (Generic, ZIP)
159.07k
187.85k (x1.18)
Test#1 (Memory)
64.01k
13.69k (x0.21)
TOTAL
840.11k
959.77k (x1.14)

Performance/W
5900X
3950X
Test#1 (Integers)
2506 points/W
3186 points/W
Test#2 (FP)
3371 points/W
4036 points/W
Test#3 (Generic, ZIP)
1515 points/W
1789 points/W
Test#1 (Memory)
610 points/W
130 points/W
TOTAL
8001 points/W
9141 points/W

Performance/GHz
5900X
3950X
Test#1 (Integers)
5071 points/GHz
3509 points/GHz
Test#2 (FP)
5584 points/GHz
5566 points/GHz
Test#3 (Generic, ZIP)
2526 points/GHz
1681 points/GHz
Test#1 (Memory)
5530 points/GHz
4765 points/GHz
TOTAL
18712 points/GHz
15522 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