Sorry but I don't agree....
I only have my own experience to gage it.
But on my machine, and I'm sure the A3640
card is working OK, the difference is very
small. I'm not a gamer or do rendering or
any of the really processer intense things.
I just do some word processing and tring to
learn some programing also serfing the net.
So in my case the card wasn't worth the effort.
I don't really see a difference.
Normally, the difference has to be 10% or more
to see it and on my card it just isn't there.
Mel Ott