Maybe you mean "northbridge"? in that case:
The northbridge has historically been one of the two chips in the core logic chipset on a PC motherboard. The northbridge is the memory hub controller.
north and south bridge of a motherboard
If i am not mistaken i believe the Video Card is run off of the North Bridge of the motherboard.
Their are two bridge found in motherboard the north bridge and the south bridge. North bridge found near the CPU and south bridge found near the BIOS.
Primary PCIe slot
north bridge
Just below where the CPU is located under a heat sink. Although most modern motherboard don't have north bridges and south bridges and instead are combined into a single chipset.
parts of a motherboard
A motherboard is
who invented the motherboard
a motherboard
Motherboard houses the cpu, the motherboard has a socket which the cpu is placed in.