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Ryzen 7 5800X vs Ryzen 9 3900X


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

Using the multithread performance as a reference, the 5800X gets a score of 558.4 k points while the 3900X gets 756.3 k points.

Summarizing, the 3900X is 1.4 times faster than the 5800X. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
a20f12
870f10
Core
Vermeer
Matisse
Architecture
Base frecuency
3.8 GHz
3.8 GHz
Boost frecuency
4.7 GHz
4.6 GHz
Socket
AM4
AM4
Cores/Threads
8/16
12/24
TDP
105 W
105 W
Cache L1 (d+i)
8x32+8x32 kB
12x32+12x32 kB
Cache L2
8x512 kB
12x512 kB
Cache L3
32768 kB
4x16384 kB
Date
November 2020
July 2019
Mean monothread perf.
89.53k points
72.51k points
Mean multithread perf.
558.41k points
756.3k points

Non-optimized benchmark
The benchmark in Mode 0 (FPU) measures cpu performance with non-optimized software. It uses the basic µinstructions from the i386 architecture with the i387 floating point unit. This mode is compatible with all CPUs so it's practical to compare very different CPUs
Monothread
5800X
3900X
Test#1 (Integers)
4.98k
4.46k (x0.9)
Test#2 (FP)
20.57k
18.46k (x0.9)
Test#3 (Generic, ZIP)
12.22k
8.05k (x0.66)
Test#1 (Memory)
28.62k
23.71k (x0.83)
TOTAL
66.39k
54.68k (x0.82)

Multithread

5800X

3900X
Test#1 (Integers)
35.09k
52.65k (x1.5)
Test#2 (FP)
171.84k
265.41k (x1.54)
Test#3 (Generic, ZIP)
107.67k
140.78k (x1.31)
Test#1 (Memory)
10.83k
46.91k (x4.33)
TOTAL
325.43k
505.76k (x1.55)

SSE3 optimized benchmark
The benchmark in mode I (SSE) is optimized for the use of SIMD instructions with 128 bits register and the SSE set up to version 3. Nearly every modern CPU has support for this mode.
Monothread
5800X
3900X
Test#1 (Integers)
18.06k
17.35k (x0.96)
Test#2 (FP)
25k
25.87k (x1.03)
Test#3 (Generic, ZIP)
12.8k
8.72k (x0.68)
Test#1 (Memory)
29.51k
27.86k (x0.94)
TOTAL
85.37k
79.8k (x0.93)

Multithread

5800X

3900X
Test#1 (Integers)
125.71k
201.57k (x1.6)
Test#2 (FP)
196.66k
284.41k (x1.45)
Test#3 (Generic, ZIP)
113.22k
145.16k (x1.28)
Test#1 (Memory)
9.92k
100.56k (x10.14)
TOTAL
445.51k
731.7k (x1.64)

AVX optimized benchmark
The benchmark in mode II (AVX) is optimized to used 256 bits registers beside the first version of the Advanced Vector Extensions (AVX). The first AVX compatible CPU was released in 2011.
Monothread
5800X
3900X
Test#1 (Integers)
18.1k
16.95k (x0.94)
Test#2 (FP)
26.41k
25.37k (x0.96)
Test#3 (Generic, ZIP)
12.39k
9.23k (x0.75)
Test#1 (Memory)
26.06k
24.83k (x0.95)
TOTAL
82.95k
76.38k (x0.92)

Multithread

5800X

3900X
Test#1 (Integers)
125.9k
196.31k (x1.56)
Test#2 (FP)
233.26k
290.5k (x1.25)
Test#3 (Generic, ZIP)
109.66k
143.95k (x1.31)
Test#1 (Memory)
10.21k
64.92k (x6.36)
TOTAL
479.02k
695.69k (x1.45)

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
5800X
3900X
Test#1 (Integers)
24.3k
16.73k (x0.69)
Test#2 (FP)
26.46k
24.74k (x0.93)
Test#3 (Generic, ZIP)
12.18k
8.82k (x0.72)
Test#1 (Memory)
26.58k
22.22k (x0.84)
TOTAL
89.53k
72.51k (x0.81)

Multithread

5800X

3900X
Test#1 (Integers)
187.4k
248.24k (x1.32)
Test#2 (FP)
246.12k
309.66k (x1.26)
Test#3 (Generic, ZIP)
113.16k
140.01k (x1.24)
Test#1 (Memory)
11.74k
58.39k (x4.98)
TOTAL
558.41k
756.3k (x1.35)

Performance/W
5800X
3900X
Test#1 (Integers)
1785 points/W
2364 points/W
Test#2 (FP)
2344 points/W
2949 points/W
Test#3 (Generic, ZIP)
1078 points/W
1333 points/W
Test#1 (Memory)
112 points/W
556 points/W
TOTAL
5318 points/W
7203 points/W

Performance/GHz
5800X
3900X
Test#1 (Integers)
5170 points/GHz
3638 points/GHz
Test#2 (FP)
5631 points/GHz
5377 points/GHz
Test#3 (Generic, ZIP)
2592 points/GHz
1917 points/GHz
Test#1 (Memory)
5656 points/GHz
4831 points/GHz
TOTAL
19049 points/GHz
15763 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