Market research firm IDC on Monday forecast a PC market decline of 5.4 percent in 2016.
IDC's report said overall worldwide PC shipments from 2016 to 2020, including both portable PCs and desktop PCs, will decline 0.5 percent in mature markets.
According to Loren Loverde, vice president of worldwide tracker forecasting and PC research at IDC, PCs will continue to struggle despite the combined release of Microsoft's Windows 10 OS upgrade and Intel's sixth-generation Skylake processors, because of competition from tablets and large-screened phones, as well as the ability for customers to upgrade older hardware to Windows 10.
"PCs remain an indispensable part of the tech landscape," said Loverde. "However, replacements continue to be postponed, and future shipments increasingly depend on replacing older PCs. Detachable tablets and phablets will remain formidable competitors to traditional PCs throughout the forecast."
IDC's report did offer a glimmer of hope for OEMs: The research firm highlighted the fact that ultra-slim and convertible notebooks will face growth in the coming years – ultra-slim notebooks are expected to grow more than 70 percent by 2020, while convertibles are expected to double by that year.