Unfortunately, this card that I'm now using has a bad 3D performance... :\
(I've discovered that it's a "lowest budget" GPU from it's lineup -
http://en.wikipedia.org/wiki/GeForce_7_Series#GeForce_7100_GS)
So, I think I'm going to keep my previous one - for if I want to play 3D
games on this computer and also as a backup.
Since, the motherboard manual only lists a few compatible cards (which are
increasingly hard to find) and I don't want to, in the future, have to
(repeatedly) go back and forward to the stores in nearby cities, to test
different new cards, to see if they're compatible with my motherboard - like
it has happened to me, in the past, with my previous board... :|
But, thanks anyway, for your suggestion.
In fact... It has occurred to me that, if I had no more use for my previous
card, being a cheap one, it didn't make sense to sell it.
And so, a donation to a Free Software project sounds like a much more
interesting alternative. :)
I'll keep your suggestion in mind, for future/other pieces of hardware. :)