Windows 7 software unit sales in US were 234% higher than Vista’s first few days of sales. “Microsoft’s program of early low-cost pre-sales, high visibility marketing, and aggressive deals helped make Windows 7 software launch successful,” said Stephen Baker of NPD. “In a slow environment for packaged software Windows 7 brought a large number of customers into software aisles.” “A combination of factors impacted Windows 7 PC sales at the outset, but the trajectory of overall PC sales is very strong leading into the holiday season,” said Baker.

"We've had a great response here in Japan," said Steve Ballmer at a Tokyo news conference. "Certainly we've seen initial sales be fantastic. The first ten days were bigger than first ten days of XP or Vista or any other Windows launch that we’ve done." As a result hardware sales experienced a double-digit jump thanks to Windows 7, said Ballmer.