yes
No.. AGP is the Graphics Port and PCI Express is Multi-Purpose..
NO. If you have a pci-x slot, probably it is a server, and you want to upgrade your graphics card, you can buy a PCI card and plug it into your PCI-X slot. It should work probably.
the slot for the ram
The PCI Express Root Port functions the same way as a regular PCI Express port, with the additional function of monitoring the interconnect hierarchy of the PCI ports. This function includes tracking the interconnect bandwidth and making sure that the PCI port hierarchy is functioning properly
The PCI slot is faster. Offer mayor speed because the PCI use more faster BUSes and new architectures. The PCI EXPRESS is the newest version of the PCI architecture.
PCI, PCI-e, AGP
No. Because the architectures (design) are not equals and the PCI Express have more speed on Its bus.
No, PCI Cards will not fit on PCI-E slots
No. They are physically and electronically incompatible. Attempting to plug an AGP card into a PCI-E slot will likely damage both components.
PCI is used for many things like extra subport for your computer like if you have a PCI express card for Graphics, your computer will be able to use it and have better graphics for gaming or but there so many things you can put into a PCI slot but there are different sizes of PCI slot and they are: PCI X1 PCI X16 PCI Express which is all used for about everything if you have those you can make your computer awesome
like pci slot dimms slot..