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Ryzen 7 5700U vs Ryzen 9 3900


Description
Both models 5700U and 3900 are based on Zen 2 architecture.

Zen 2 is fabricated on the 7nm process from TSMC and it’s the third generation of Zen CPUs. It comes with 64kB of L1 cache and 512kB of L2 cache per core. Zen 2 CPUs are divided into 3 categories: Matisse (desktop), Rome (Server) and Castle Peak (high-end desktop).

Using the multithread performance as a reference, the 5700U gets a score of 324.9 k points while the 3900 gets 687.5 k points.

Summarizing, the 3900 is 2.1 times faster than the 5700U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
860f81
870f10
Core
Lucienne
Matisse
Architecture
Base frecuency
1.8 GHz
3.1 GHz
Boost frecuency
4.3 GHz
4.3 GHz
Socket
BGA1140-FP6
AM4
Cores/Threads
8/16
12/24
TDP
15 W
65 W
Cache L1 (d+i)
8x32+8x32 kB
12x32+12x32 kB
Cache L2
8x512 kB
12x512 kB
Cache L3
2x4096 kB
4x16384 kB
Date
January 2021
September 2019
Mean monothread perf.
61.41k points
74.97k points
Mean multithread perf.
324.93k 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
5700U
3900
Test#1 (Integers)
16.9k
16.85k (x1)
Test#2 (FP)
26.99k
26.03k (x0.96)
Test#3 (Generic, ZIP)
9.14k
9.54k (x1.04)
Test#1 (Memory)
8.38k
22.55k (x2.69)
TOTAL
61.41k
74.97k (x1.22)

Multithread

5700U

3900
Test#1 (Integers)
115.46k
229.41k (x1.99)
Test#2 (FP)
144.12k
292.81k (x2.03)
Test#3 (Generic, ZIP)
60.27k
128.48k (x2.13)
Test#1 (Memory)
5.07k
36.8k (x7.25)
TOTAL
324.93k
687.5k (x2.12)

Performance/W
5700U
3900
Test#1 (Integers)
7697 points/W
3529 points/W
Test#2 (FP)
9608 points/W
4505 points/W
Test#3 (Generic, ZIP)
4018 points/W
1977 points/W
Test#1 (Memory)
338 points/W
566 points/W
TOTAL
21662 points/W
10577 points/W

Performance/GHz
5700U
3900
Test#1 (Integers)
3929 points/GHz
3920 points/GHz
Test#2 (FP)
6278 points/GHz
6054 points/GHz
Test#3 (Generic, ZIP)
2125 points/GHz
2218 points/GHz
Test#1 (Memory)
1948 points/GHz
5243 points/GHz
TOTAL
14280 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