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Ryzen 9 3900 vs Ryzen 7 5800U


Description
The 3900 is based on Zen 2 architecture while the 5800U is based on Zen 3.

Using the multithread performance as a reference, the 3900 gets a score of 687.5 k points while the 5800U gets 314.5 k points.

Summarizing, the 3900 is 2.2 times faster than the 5800U . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
870f10
a50f00
Core
Matisse
Cezanne
Architecture
Base frecuency
3.1 GHz
1.9 GHz
Boost frecuency
4.3 GHz
4.4 GHz
Socket
AM4
BGA-FP6
Cores/Threads
12/24
8/16
TDP
65 W
15 W
Cache L1 (d+i)
12x32+12x32 kB
8x32+8x32 kB
Cache L2
12x512 kB
8x512 kB
Cache L3
4x16384 kB
16384 kB
Date
September 2019
January 2021
Mean monothread perf.
74.97k points
71.16k points
Mean multithread perf.
687.5k points
314.55k 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
3900
5800U
Test#1 (Integers)
16.85k
18.34k (x1.09)
Test#2 (FP)
26.03k
22.78k (x0.88)
Test#3 (Generic, ZIP)
9.54k
9.45k (x0.99)
Test#1 (Memory)
22.55k
20.59k (x0.91)
TOTAL
74.97k
71.16k (x0.95)

Multithread

3900

5800U
Test#1 (Integers)
229.41k
102.74k (x0.45)
Test#2 (FP)
292.81k
143.27k (x0.49)
Test#3 (Generic, ZIP)
128.48k
58.13k (x0.45)
Test#1 (Memory)
36.8k
10.41k (x0.28)
TOTAL
687.5k
314.55k (x0.46)

Performance/W
3900
5800U
Test#1 (Integers)
3529 points/W
6849 points/W
Test#2 (FP)
4505 points/W
9551 points/W
Test#3 (Generic, ZIP)
1977 points/W
3875 points/W
Test#1 (Memory)
566 points/W
694 points/W
TOTAL
10577 points/W
20970 points/W

Performance/GHz
3900
5800U
Test#1 (Integers)
3920 points/GHz
4168 points/GHz
Test#2 (FP)
6054 points/GHz
5178 points/GHz
Test#3 (Generic, ZIP)
2218 points/GHz
2147 points/GHz
Test#1 (Memory)
5243 points/GHz
4679 points/GHz
TOTAL
17435 points/GHz
16172 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