Achei interessante porque só o processador é R$2.000, geralmente.

Placa Mãe Biostar Racing X470GTQ
Marca: Biostar
Modelo: X470GTQ
Processador: AMD A-series APU / Ryzen APU / CPU for Socket AM4
Chipset: AMD X470
Memória: Support Dual Channel DDR4 1866/2133/ 2400/ 2667/ 2933(OC)/3200(OC) MHz
4 x DDR4 DIMM Memory Slot
Max. Supports up to 64GB Memory
Slots de Expansão: 2 x PCI-E 2.0 x16 Slot
1 x PCI-E 2.0 x16 Slot (x1)
1 x PCI-E 3.0 x16 Slot
Armazenamento: 4 x SATA3 Connectors (6GB/s)
Support SATA RAID: 0, 1, 10
Support Hot-Plug in AHCI mode
1 x M.2 Key M 32Gb/s Connector(32Gb/s)
M.2(32Gb/s):the bandwidth is depended on CPU Ryzen is 32Gb/s;APU & NPU is 16Gb/s.
Portas USB: 2 x USB 3.1 Gen2 (10Gb/s)
6 x USB 3.1 Gen1 (5Gb/s)
4 x USB 2.0
Audio: Realtek ALC887 7.1-Channel Blu-ray Audio
High Definition Audio , Hi-FI (Front)
LAN (rede): Realtek RTL8118AS - 10/100/1000Mb/s auto negotiation, Half / Full duplex capability
Suporta Super LAN Surge Protection
Conectores internos: 4x SATA III 6.0Gb/s Connector
2x USB 2.0 Header (each header supports 2 USB 2.0 ports)
1x USB 3.1 Gen1 (5Gb/s) Header (each header supports 2 USB 3.1 Gen1 ports)
1x 8-Pin Power Connector
1x 24-Pin Power Connector
1x CPU Fan Connector
2x System Fan Connector
1x Front Panel Header
1x Front Audio Header
1x Clear CMOS Header
1x S/PDIF out Connector
1x COM Port Header
2x 5050 LED Header
Portas traseiras: 1x PS/2 Keyboard
1x DVI-D Port
1x HDMI Port
1x LAN port
2x USB 3.1 Gen2 (10Gb/s) Port
4x USB 3.1 Gen1 (5Gb/s) Port
3x Audio Jack
Dimensões: Formato Micro ATX (24,4 cm x 23,8 cm)

Processador AMD Ryzen 7 3800x 3.9ghz (4.5ghz Turbo)
Marca: AMD
Modelo: Ryzen 7 3800x
Núcleo: 8 core
Nº de threads: 16
Frequencia de Operação: 3.9 GHz
Frequencia Max Turbo: 4.5 GHz
Cache L3: 32MB
Potência: 65 W
CMOS: 7nm