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Ryzen 7 1800X vs Ryzen 9 3900X


Description
The 1800X is based on Zen architecture while the 3900X is based on Zen 2.

Using the multithread performance as a reference, the 1800X gets a score of 410.5 k points while the 3900X gets 756.3 k points.

Summarizing, the 3900X is 1.8 times faster than the 1800X. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
800f11
870f10
Core
Summit Ridge
Matisse
Architecture
Base frecuency
3.6 GHz
3.8 GHz
Boost frecuency
4 GHz
4.6 GHz
Socket
AM4
AM4
Cores/Threads
8/16
12/24
TDP
95 W
105 W
Cache L1 (d+i)
8x64+8x32 kB
12x32+12x32 kB
Cache L2
8x512 kB
12x512 kB
Cache L3
2x8192 kB
4x16384 kB
Date
March 2017
July 2019
Mean monothread perf.
61.07k points
72.51k points
Mean multithread perf.
410.47k 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
1800X
3900X
Test#1 (Integers)
4.14k
4.46k (x1.08)
Test#2 (FP)
19.07k
18.46k (x0.97)
Test#3 (Generic, ZIP)
5.77k
8.05k (x1.39)
Test#1 (Memory)
18.28k
23.71k (x1.3)
TOTAL
47.26k
54.68k (x1.16)

Multithread

1800X

3900X
Test#1 (Integers)
34.48k
52.65k (x1.53)
Test#2 (FP)
169.65k
265.41k (x1.56)
Test#3 (Generic, ZIP)
63.68k
140.78k (x2.21)
Test#1 (Memory)
8.2k
46.91k (x5.72)
TOTAL
276.01k
505.76k (x1.83)

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
1800X
3900X
Test#1 (Integers)
15.11k
16.95k (x1.12)
Test#2 (FP)
23.46k
25.37k (x1.08)
Test#3 (Generic, ZIP)
5.64k
9.23k (x1.64)
Test#1 (Memory)
17.52k
24.83k (x1.42)
TOTAL
61.72k
76.38k (x1.24)

Multithread

1800X

3900X
Test#1 (Integers)
119.5k
196.31k (x1.64)
Test#2 (FP)
198.79k
290.5k (x1.46)
Test#3 (Generic, ZIP)
59.75k
143.95k (x2.41)
Test#1 (Memory)
11.58k
64.92k (x5.6)
TOTAL
389.62k
695.69k (x1.79)

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
1800X
3900X
Test#1 (Integers)
15.02k
16.73k (x1.11)
Test#2 (FP)
24.26k
24.74k (x1.02)
Test#3 (Generic, ZIP)
5.53k
8.82k (x1.6)
Test#1 (Memory)
16.26k
22.22k (x1.37)
TOTAL
61.07k
72.51k (x1.19)

Multithread

1800X

3900X
Test#1 (Integers)
122.92k
248.24k (x2.02)
Test#2 (FP)
220.32k
309.66k (x1.41)
Test#3 (Generic, ZIP)
59.78k
140.01k (x2.34)
Test#1 (Memory)
7.44k
58.39k (x7.85)
TOTAL
410.47k
756.3k (x1.84)

Performance/W
1800X
3900X
Test#1 (Integers)
1294 points/W
2364 points/W
Test#2 (FP)
2319 points/W
2949 points/W
Test#3 (Generic, ZIP)
629 points/W
1333 points/W
Test#1 (Memory)
78 points/W
556 points/W
TOTAL
4321 points/W
7203 points/W

Performance/GHz
1800X
3900X
Test#1 (Integers)
3756 points/GHz
3638 points/GHz
Test#2 (FP)
6065 points/GHz
5377 points/GHz
Test#3 (Generic, ZIP)
1382 points/GHz
1917 points/GHz
Test#1 (Memory)
4065 points/GHz
4831 points/GHz
TOTAL
15267 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