Northbridge • Northbridge is an Intel chipset that communicates with the computer processor and controls interaction with memory, the Peripheral Component Interconnect (PCI) bus, Level 2 cache, and all Accelerated Graphics Port (AGP) activities.
DDR memory slot • double data rate
(PCI) slot • A Peripheral Component Interconnect (PCI) slot is a connecting apparatus for a 32bit computer bus. These tools are built into the motherboards of computers and devices in order to allow for the addition of PCI devices like modems, network hardware or sound and video cards.
AGP slot • Definition of: AGP. AGP. (Accelerated Graphics Port) An earlier hardware interface from Intel for connecting a graphics card (display adapter) to a PC. Introduced in 1997 and superseded by PCI Express in the late 2000s, a single AGP slot on the motherboard provided a direct connection between the card and memory.