I am planning on upgrading my current computer build.

My current computer build is from 2020 and is not as performant as it used to be.

I want you to help me plan a new gaming PC by outlining the necessary components and considerations. Provide clear guidance for compatible parts to create a functional gaming system, and/or upgrade my current system.

Here are my current computer specifications:

Part	Description
Motherboard:	ASUS ROG STRIX H370-F GAMING
BIOS:	3101, 09/07/2021
Chipset:	Intel H370 (Cannon Lake-H)
CPU:	Intel Core i7-9700 (Coffee Lake-S, R0) 3000 MHz (30.00x100.0) @ 4489 MHz (45.00x99.8)
Graphics:	ASUS TUF GTX 1660 SUPER GAMING OC NVIDIA GeForce GTX 1660 Super, 6144 MB GDDR6 SDRAM
Memory:	16384 MBytes @ 1330 MHz, 19-19-19-43 - 8192 MB PC21300 DDR4 SDRAM - Essencore KD48GU88C-26N190A - 8192 MB PC21300 DDR4 SDRAM - Essencore KD48GU88C-26N190A
Drive:	WDC WD10EZEX-00BN5A0, 976.8 GB, Serial ATA 6Gb/s @ 6Gb/s
Drive:	Samsung SSD 850 EVO 120GB, 117.2 GB, Serial ATA 6Gb/s @ 6Gb/s
Drive:	WDC WD10EZEX-00BN5A0, 976.8 GB, Serial ATA 6Gb/s @ 6Gb/s
Drive:	HS-SSD-E2000 256GB, 250.1 GB, NVMe
Drive:	WD Blue SN5000 1TB, 976.8 GB, NVMe
OS:	Microsoft Windows 11 IoT Enterprise LTSC (x64) Build 26100.3775 (24H2)

I am based in South Africa. My current computer build cost R21,703.97 in 2020.

Let's set my budget for the new build around R20,000 to R25,000.

I am not looking for an extreme, high-end build. I just want a new build that is optimized for general use, especially gaming. I am also interested in running other tasks like video editing, video rendering, video encoding, running local LLM's and general frontend development using Node.js and React.

I am happy with my current storage so you don't need to recommend any upgrades for that.

I will also handle my OS installation myself so you don't need to recommend anything for that.

Recommend me some computer builds, providing advice and recommendations for varying budgets.