PXI is PCI eXtensions for Instrumentation, Peripheral component interface bus
PCI-X is an extension to the original PCI slot. It uses a 64-bit data bus (most but not all PCI slots are 32-bit) and runs much faster than PCI (PCI runs at 33 or 66 MHz, PCI-X ranges from 66 MHz to 533 MHz). PCI cards can be used in a PCI-X slot, and most PCI-X cards will run in a PCI slot.PCI-E (PCI Express) is a totally different architecture. The connectors are similar, but PCI-E is a serialized bus, whereas PCI and PCI-X was parallelized. In PCI-E, there are fewer data paths but the paths run much faster. Think of it as the difference between a six lane highway with a speed limit of 35 MPH vs. a two lane highway with a speed limit of 75 MPH.
Yes, PCI and PCI-E components are incompatible.
Yes PCI express 2.1 is backwards compatible
PCI-e runs at 250MBps and PCI runs at 133MBps
PCI Express was created in 2004.
PCI Express 2.0 x16.
PCI , AGP and PCI Express
The PCI Express x16 is intended to ultimately replace the AGP bus along with the PCI-X and the Conventional PCI.
PCI-E 2.0 ha s a higher bandwidth meaning more data can travel faster between the card in the slot and the motherboard/CPU. Im not sure of the exact numbers of data transfer speed but I'm sure the speed improvement is significant
You cannot use a 2.0 pci express card in a pci express slot because the technology is newer. For example: It would be like putting a playstation 3 game into a playstation 2 console.
pci express (PCIe)
PCI-e, Most deffinatly. PCI-e 2.0 is the current technology and should be the one you are looking for.