Amazon.com Inc took a big gamble this year by expanding its annual Prime Day summer sale to four days from two, betting the extension would give shoppers more time to navigate the millions of deals on its sprawling web store.

We've found massive discounts on desktop PCs for home, office, or game room this Amazon Prime Day. Check out the money-saving deals from all the top brands.

Some deals even have a countdown timer that shows how much longer the sale price is available. To avoid giving in to a false sense of urgency, Soledad said, "Don't show up to Amazon Prime Day without already having a list of the items that you want ahead of time."