Video Card
AGP
There is no latest AGP bus. The most recent bus designed for high performance equipment is PCI-E. And x16 has the highest bandwidth.
AGP (Advanced Graphics Port) Is a special card socket designed specifically for video cards. Video cards used to sit on the PCI bus with all the rest of your hardware. It was eventually decided that performance could be improved by putting video cards on their own specific bus. The AGP bus has special priority when the CPU is processing stuff, and usually runs at a much higher clockspeed than the PCI bus.
Accelerated Graphics Port (AGP)
32 bit
PCI Express
PCI-E
The IDE drive has no direct correlation to the AGP bus.
The PCI Express x16 is intended to ultimately replace the AGP bus along with the PCI-X and the Conventional PCI.
PCI Express 2.0 x 16 is the Fastest But PCI Express x16 is faster than AGP
PCI, and AGP
32 bit