The memory on a video card is very similar to the regular random-access memory (or RAM) on a motherboard. A video card connects to the motherboard of a computer system using a slot, typically an Accelerated Graphics Port (AGP) or a Peripheral Component Interconnect Express (PCIe) connection. It is a technology used on motherboards made by ECS, intended to allow an existing AGP card to be used in a new motherboard instead of requiring a PCIe card to be obtained (since the introduction of PCIe graphics cards few motherboards provide AGP slots). An 'AGP Express' slot is basically a PCI slot (with twice the electrical power) with an. To find out if the AGP bus itself is responsible for better performance, it is necessary to use two identical cards. Actually, cards that are identical other than the different slot types. Unreal Demo, by GT Interactive Software - used a time demo to measure the frames per second (FPS) of the 3D rendering: Result: AGP = 18.36 FPS and PCI = 18.1 FPS.
Agp Slot Types
You can expand your PC internally by adding additional circuitry boards. Those boards, or expansion cards, plug directly into expansion slots on the motherboard (as shown in this figure). So, you can expand your computer system by adding options not included with the basic PC. Here are the types of expansion slots your PC may have:
What Is An Agp Card
PCI Express: The best type of expansion slot to have in your PC is the PCI Express, also written as PCIe. Without boring you, the PCI Express type of expansion slot communicates with the motherboard, and therefore with the microprocessor, both quickly and efficiently.
PCI: The PCI slot is the most common form of internal expansion for a PC.
Some PCs have a mixture of PCI and PCI Express slots. If so, go with PCI Express when you have that option.
AGP: This type of expansion slot was specifically designed to deal with graphics adapters. In fact, AGP stands for Accelerated Graphics Port. Older PCs may sport this expansion slot, but the best video cards use PCI Express.
ISA: The most ancient type of expansion slot is the ISA, which stands for (get this) Industry Standard Architecture. That’s because it never really had a name until another, better type of expansion slot came along. ISA slots hang around to be compatible with older expansion cards.