"I think I'll be remembered for my major championships. So all I've dreamed of from a little kid is winning majors. I never dreamed of competing in the Olympics or winning an Olympic medal," he added.
"So in my mind, a major will always be more important."
Golf is returning to the Olympics this August for the first time since 1904, although its inclusion has divided opinion with some players declaring it little more than an "exhibition" sport.
Critics argue that golf, like tennis which returned to the Olympic fold in 1988, already has its four blue riband events and should not be in the Games.
To accommodate the Olympic tournament, the year's final major, the PGA Championship, has also had to be moved to late July from its traditional date in the second week of August, but Spieth sounded keen.
"The way I look at it right now, I look at them equal," said the 22-year-old Masters and US Open champion.
"Just because to say you're a gold medallist - you won a gold medal for your country in the Olympics ..."
"It's very early to tell how they will end up comparing to major championships in the future."
"But if I had not won a major, I would probably still say a major. At this point I would argue that a gold medal would be very, very special."
However, Spieth said winning the biennial Ryder Cup with the US team in Minnesota in September/October was probably top of his priorities for 2016 after playing on the losing side against Europe in 2014.
"We are tired of hearing about changes that need to be made. We are tired of hearing about the past. And we're ready to believe in kind of a younger, more hungry team going forward," he said.
"If we can continue what we've been doing over this past year in young American golf, we're going to go in and get in that team room and be pretty excited about who is next to us."
