Need a little help, please?

[Kreekakon]

Your motherboard has nothing to do with how powerful a card you can install except for the type of slot it has which was already resolved earlier. Sometimes if your CPU is too weak it can bottleneck more powerful graphics cards, but since we're talking about low, LOW end graphics cards that will never be a problem.

Another thing to consider is your computer's power supply, but when dealing with cards this weak I don't think it matters all that much.