The primary advantage of AGP over PCI is that it provides a dedicated pathway between the slot and the processor rather than sharing the PCI bus. In addition to a lack of contention for the bus, the point-to-point connection allows for higher clock speeds.
AGP also uses sideband addressing, meaning that the address and data buses are separated so the entire packet does not need to be read to get addressing information. This is done by adding eight extra bits which allow the graphics controller to issue new AGP requests and commands at the same time with other AGP data flowing via the main 32 address/data (AD) lines. This results in improved overall AGP data throughput.
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What is ExpressCard?An ExpressCard is an interface to allow peripheral devices to be connected to a computer, usually a laptop computer. ExpressCards is a hardware standard replacing PC cards or PCMCIA cards.
What is CardBus?CardBus is the latest enhancement to the PCMCIA 5.0 or later. PMCIA stands for Asociación Internacional de Tarjetas de Memoria. CardBus was introduced in 1995 and present in laptops from late 1997 onward. The main purpose of CardBus was to extend the existing PCMCIA bus to allow more powerful devices, and also provide support for 32 Bit I/O.
What is PCMCIA?PCMCIA is the short for Personal Computer Memory Card International Association. It is pronounced as separate letters. PCMCIA is also known as PC Card.
PCMCIA was originally designed for adding memory to portable computers, the PCMCIA standard has been expanded several times and is now suitable for many types of devices
What is PCI Express?PCI Express stands for Peripheral Component Interconnect Express. It is also known as PCIe.
What is AGP Pro?AGP Pro was launched in 1998 as an AGP interface extension specification for advanced workstations. AGP Pro bus is a specification that provides a direct connection between the graphics adapter and memory.
What is AGP?AGP is the short for Accelerated Graphics Port. It was designed in 1997 as a successor to PCI type connections.
What is PCI-X?PCI-X is the short for PCI-eXtended. It was developed in 1998.
