A microchip connected directly to the CPU (unlike the southbridge) and thus responsible for tasks that require the highest performance.(noun)
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Use "northbridge" in a sentence
"The other is theoretically to go to the housewarming tomorrow, problem still being getting it there if i'm having lunch with someone in northbridge prior ... * ponder*"
"If not, can I that plug for another case fan. the northbridge is a chip on the motherboard."
"More interesting than that is a chipset being released by AMD that, for now, will not be finding its way into a motherboard northbridge, which is too bad, as it seems to pack a punch like no other, from Ars Technica"