A New Computer

[SkumScott]

Make new pc of your choice. don't buy pre-built pc

[Mokou-Sama]

Look at custom pc websites that allow you to build a PC.
Simulate a rig within your budget, then buy the parts individually and build it on your own. If you can't, pay someone to build it, it's still cheaper than buying a prebuilt in many cases. The idea is for you to compare prices of the parts and select some that are compatible with each other.