It says I need a Intel i5-4590 CPU and a NVIDIA GTX 970. I've already got a Intel i5-4460 CPU and a NVIDIA GTX 750.
Is it possible to just buy those components, or will I run into problems because the motherboard isn't compatible with them? Or are there other limitations as well. The desktop is fairly new, it's a Levono with 8 GB RAM, Windows 10 and USB 3.
I agree, upgrade the CPU and you should be able to get by for awhile - then in a few months you might find a good deal on a new GTX 1080 and be able to make a solid upgrade. (Or buy someones 980ti for cheap after they upgrade.)