Ok, I've read somewhere that the transfer speed is faster on the A4000/3000 versions of the PCI busboards cause the CPU connector is faster on the A4000 than the A1200's.
There was even this site, (now down) that clearly stated the Gfx boards were faster with the A4000's situation.
But recently, bout two months or so there were some tests (made by Karlos I think) run by people that proved there is not a big difference?
Can someone clarify this, as I was having a hell lot a work and didn't read it, and can't find the actual thread now?