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Ryzen 7 1800X vs Ryzen 9 3900


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

Using the multithread performance as a reference, the 1800X gets a score of 410.5 k points while the 3900 gets 687.5 k points.

Summarizing, the 3900 is 1.7 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
3.1 GHz
Boost frecuency
4 GHz
4.3 GHz
Socket
AM4
AM4
Cores/Threads
8/16
12/24
TDP
95 W
65 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
September 2019
Mean monothread perf.
61.07k points
74.97k points
Mean multithread perf.
410.47k points
687.5k 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
3900
Test#1 (Integers)
4.14k
4.39k (x1.06)
Test#2 (FP)
19.07k
16.99k (x0.89)
Test#3 (Generic, ZIP)
5.77k
7.74k (x1.34)
Test#1 (Memory)
18.28k
24.57k (x1.34)
TOTAL
47.26k
53.69k (x1.14)

Multithread

1800X

3900
Test#1 (Integers)
34.48k
48.45k (x1.41)
Test#2 (FP)
169.65k
230.81k (x1.36)
Test#3 (Generic, ZIP)
63.68k
122.82k (x1.93)
Test#1 (Memory)
8.2k
54.73k (x6.67)
TOTAL
276.01k
456.8k (x1.66)

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
3900
Test#1 (Integers)
15.11k
16.16k (x1.07)
Test#2 (FP)
23.46k
23.75k (x1.01)
Test#3 (Generic, ZIP)
5.64k
9.32k (x1.65)
Test#1 (Memory)
17.52k
23.17k (x1.32)
TOTAL
61.72k
72.4k (x1.17)

Multithread

1800X

3900
Test#1 (Integers)
119.5k
174.73k (x1.46)
Test#2 (FP)
198.79k
275.63k (x1.39)
Test#3 (Generic, ZIP)
59.75k
125.65k (x2.1)
Test#1 (Memory)
11.58k
44.17k (x3.81)
TOTAL
389.62k
620.18k (x1.59)

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
3900
Test#1 (Integers)
15.02k
16.85k (x1.12)
Test#2 (FP)
24.26k
26.03k (x1.07)
Test#3 (Generic, ZIP)
5.53k
9.54k (x1.73)
Test#1 (Memory)
16.26k
22.55k (x1.39)
TOTAL
61.07k
74.97k (x1.23)

Multithread

1800X

3900
Test#1 (Integers)
122.92k
229.41k (x1.87)
Test#2 (FP)
220.32k
292.81k (x1.33)
Test#3 (Generic, ZIP)
59.78k
128.48k (x2.15)
Test#1 (Memory)
7.44k
36.8k (x4.95)
TOTAL
410.47k
687.5k (x1.67)

Performance/W
1800X
3900
Test#1 (Integers)
1294 points/W
3529 points/W
Test#2 (FP)
2319 points/W
4505 points/W
Test#3 (Generic, ZIP)
629 points/W
1977 points/W
Test#1 (Memory)
78 points/W
566 points/W
TOTAL
4321 points/W
10577 points/W

Performance/GHz
1800X
3900
Test#1 (Integers)
3756 points/GHz
3920 points/GHz
Test#2 (FP)
6065 points/GHz
6054 points/GHz
Test#3 (Generic, ZIP)
1382 points/GHz
2218 points/GHz
Test#1 (Memory)
4065 points/GHz
5243 points/GHz
TOTAL
15267 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