I’m looking to start a project. I don’t have the newest computer, and don’t want to spend a lot of money. Recommended hardware for Unreal Engine 4:
Windows 10 64-bit
Quad-core Intel or AMD, 2.5 GHz or faster
DirectX 11 or DirectX 12 compatible graphics card

I currently have Windows 10 Pro 64-bit
AMD Phenom II X4 B95 processor @ 3.0 GHz
4 GB RAM @ PC3-10600 (1333 MHz)
DirectX 12
ATI Radeon HD 4350

I realize I have to increase memory and will need a newer video card. Is that enough? If replacing my whole computer is required, then this won’t work.

Trust me, you don’t want to do this.It may work with 8GB ram but to me 16GB is a minimum ram. I do not know the processor but it sounds oldschool. With such a setup you will spent half the time waiting for things to load, that is, if they even load.

I could do more memory, was planning on 16MB. I’m hoping I can get Unreal Engine to work. Don’t want to waste my time if this just won’t work. My project is a video, a “walk through” of a 3D spaceship. Designing a highly realistic spaceship, the habitation ring rotates for centrifugal force for artificial gravity; a wheel. The hub will have zero-G. A couple ways I could set this up. Ideal is if I could configure gravity in different directions. I see there’s an issue with this. I could fake it a couple ways. Before getting into that, my first question is whether Unreal Engine will work at all. My processor is an AMD quad-core. If this processor is considered too old, then I’m wasting my time.

Your processor is not the (main) issue. Your 12 year old 0.5 GB vRAM, DX10 video card is.

It does not support DX11 or Shader 5.0 which are a must to run the current version of the engine. You say DX12 but that’s what your OS can do, not what your video adapter supports. There is a *hack *that would allow you to run an older version of engine (4.16 / 4.17 or thereabout) but since you want "a highly realistic spaceship", you will not be able to achieve what you want. Or you will need expert knowledge of materials in order to work with the upfront limitations.

While many consider 16GB RAM to be a reasonable minimum (and rightly so!), you can get away with using 8GB but it *will *test your patience, especially that your machine is likely to rely on an old fashioned HDD rather than an SSD. If you exercise patience, the 8GB will allow you to learn the basics of the engine for as long as you stick to simple scenes and highly optimised assets.

To sum it up, you can run the engine if you up the RAM to 8GB and get another video card. It does not need to be cutting edge - a used $50 GPU supporting DX11 will do just fine for learning; like a GeForce 960 or similar.