Gigabyte rhymes with:
megabyte, exabyte, jacobite, megabyte, backbite, exabyte, frostbite, jacobite, kilobyte, megabyte, niobite, snakebite, soundbite
Gigabyte sounds like:
gasped, gavitt, gift, gifted, giveth, goofed, goosefoot, govett, gupta, gypped