PC Specs
GPU : GIGABYTE GeForce RTX 4090 GAMING OC 24G
CPU : Intel Core i9-13900K
Motherboard : MSI MPG Z790 EDGE WIFI
RAM : 2x Corsair 64GB KIT DDR5 5600MHz CL40 Vengeance RGB (128GB)
PSU : Corsair HX1500i (C14) (2022)
CPU Cooler : ARCTIC Liquid Freezer II 420
Case : Corsair iCUE 5000X RGB white

Storage
M.2 : SSD disk WD BLACK SN850X NVMe 4TB
HDD : Seagate IronWolf 8TB CMR
External HDD : WD Elements Portable 5TB

Peripherals
2x 27" ASUS VG279QM Gaming HDR
1080p 280Hz displays
1x DELL 1024x1280 display (Discord monitor, a very old model, no idea what it really is. Using it in portrait mode)

KB: Corsair K70 MAX RGB MGX
M: Corsair Scimitar Elite RGB, Black
Headphones: Corsair Virtuoso RGB Wireless

Controllers: PS4, PS5 & Xbox Elite Series 2

Peripherals mostly chosen for osu!, display for the high refresh rate and kb for the switches and the polling rate. Mouse is mainly for FFXIV. Headphones chosen for their really good sounding microphone. Say what you want about Corsair but I didn't have an issue with their products yet.

Others
Valve Index
Steam Deck
Wacom Intuos CTH490