FRACTALS ARE FUN
I'm running a budged reconditioned PC with onboard graphics and only 8gb or ram, but I manage to make a lot of nice fractals with Mandelbulb3d v1.9.9 It's easy to use once you get the hang of it and there are lots of tutorials on the net on how to use it. There are also a lot of peramarer files to tinker with on DeviantArt. It's a nice lite program that does the job.
I'm also in the process of trying to learn a newer more fancy program called Mandelbulber 2. The interface is different and it renders in a different way. It's also not quite as light a program but it's also not big at all. It's also a 64 bit application and not a 32 bit application.
There are many other fractal programs out there but I like these 2 the best. They generate 3D fractals that are pleasing to the eye and can generate some interesting abstract forms.