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Ryzen 9 5900X vs 3900


Description
The 5900X is based on Zen 3 architecture while the 3900 is based on Zen 2.

Using the multithread performance as a reference, the 5900X gets a score of 840.1 k points while the 3900 gets 687.5 k points.

Summarizing, the 5900X is 1.2 times faster than the 3900. 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
3.1 GHz
Boost frecuency
4.8 GHz
4.3 GHz
Socket
AM4
AM4
Cores/Threads
12/24
12/24
TDP
105 W
65 W
Cache L1 (d+i)
12x32+12x32 kB
12x32+12x32 kB
Cache L2
12x512 kB
12x512 kB
Cache L3
2x32768 kB
4x16384 kB
Date
November 2020
September 2019
Mean monothread perf.
89.82k points
74.97k points
Mean multithread perf.
840.11k points
687.5k 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
3900
Test#1 (Integers)
24.34k
16.85k (x0.69)
Test#2 (FP)
26.8k
26.03k (x0.97)
Test#3 (Generic, ZIP)
12.12k
9.54k (x0.79)
Test#1 (Memory)
26.55k
22.55k (x0.85)
TOTAL
89.82k
74.97k (x0.83)

Multithread

5900X

3900
Test#1 (Integers)
263.12k
229.41k (x0.87)
Test#2 (FP)
353.9k
292.81k (x0.83)
Test#3 (Generic, ZIP)
159.07k
128.48k (x0.81)
Test#1 (Memory)
64.01k
36.8k (x0.57)
TOTAL
840.11k
687.5k (x0.82)

Performance/W
5900X
3900
Test#1 (Integers)
2506 points/W
3529 points/W
Test#2 (FP)
3371 points/W
4505 points/W
Test#3 (Generic, ZIP)
1515 points/W
1977 points/W
Test#1 (Memory)
610 points/W
566 points/W
TOTAL
8001 points/W
10577 points/W

Performance/GHz
5900X
3900
Test#1 (Integers)
5071 points/GHz
3920 points/GHz
Test#2 (FP)
5584 points/GHz
6054 points/GHz
Test#3 (Generic, ZIP)
2526 points/GHz
2218 points/GHz
Test#1 (Memory)
5530 points/GHz
5243 points/GHz
TOTAL
18712 points/GHz
17435 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