Hi guys, need some suggestions please.

1. Preferred Brand: Any reliable brand
2. Budget: Max RM4k
3. Screen Size: Any
4. CPU: i5 above (quad core)
5. RAM: 4gb/8gb ddr4
6. Storage: Prefer to have option to include SSD and HDD
7. OS: Windows 10
8. Usage: CFD (computational fluid dynamic) simulation , dota 2

TIA