The Ryzen 9 3900X is a cpu manufactured by AMD that was released on July 2019. This model has 12 Matisse cores with Simultaneous MultiThreading (SMT), runs at 3800 MHz as base frequency and has a a thermal design power of 105 W.
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).
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
Multithread
Test#1 (Integers)
4.46k
52.65k (x11.8)
Test#2 (FP)
18.46k
265.41k (x14.4)
Test#3 (Generic, ZIP)
8.05k
140.78k (x17.5)
Test#1 (Memory)
23.71k
46.91k (x2.0)
TOTAL
54.68k
505.76k (x9.2)
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
Multithread
Test#1 (Integers)
17.35k
201.57k (x11.6)
Test#2 (FP)
25.87k
284.41k (x11.0)
Test#3 (Generic, ZIP)
8.72k
145.16k (x16.7)
Test#1 (Memory)
27.86k
100.56k (x3.6)
TOTAL
79.8k
731.7k (x9.2)
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
Multithread
Test#1 (Integers)
16.95k
196.31k (x11.6)
Test#2 (FP)
25.37k
290.5k (x11.5)
Test#3 (Generic, ZIP)
9.23k
143.95k (x15.6)
Test#1 (Memory)
24.83k
64.92k (x2.6)
TOTAL
76.38k
695.69k (x9.1)
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 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) [% vs time]
Test#2 (FP) [% vs time]
Test#3 (Generic, ZIP) [% vs time]
Test#1 (Memory) [% vs time]
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.