Is my PC suitable for Unity3D graphic?

Hi all,
I've downloaded the free version of Unity, I installed it and ran it.
Other huge engines, like UE4 or CryEngine fail on my PC, but Unity3D starts, so it's a good thing. What about the graphic? Can I load, manage and use low graphic on my ATI Sapphire Radeon 1550X series?
If this is possible, one day, I will buy Pro version to commercialize my games. I think my graphic card is too old, but what about creating a game with a simple and not too sophisticated graphic?
Thank you

 

If you've already downloaded Unity, installed and it works... why not just try a simple test and make a little demo? It seems to me if Unity is capable of making games running on cell phones you should be able to make a game run on your PC.

 

According to Unity's system requirements, your graphics card should be fine. (if it was made after 2004).

Source: http://unity3d.com/unity/system-requirements

 

I'd suggest getting a new graphics card. I've done some dev work using an old card similar to yours, and I ran into a lot of weird, unpredictable problems. Some things looked ugly, and some things simply did not render. If you use a really old card, you won't know if the problems are because you did something wrong or because your hardware is really old. It is not worth the headaches. Upgrade to a newer card and you can avoid those problems.