The market research firm's preliminary projections indicate that shipments this year will be around 199 million units, only a 9 percent rise from the 183 million PCs sold in 2004. The segment had, compared with the previous year.
The deceleration can be traced to the petering out of replacement cycles for both corporate and home PCs, Gartner said.
"We believe professional replacement activity peaked in 2004 and will decelerate sharply over 2005," Gartner analyst George Shiffler said in a statement. "While home replacement activity will continue to provide some strength to the market in 2005, it too seems likely to slow by year-end."
On the other hand, laptops will be in greater demand this year, and that segment's growth is projected to top 17.4 percent in 2005. "Mobile PCs are becoming increasingly attractive to a broad range of users. There are a number of reasons for this, including rapidly falling system prices, enhanced wireless experiences and expanded multimedia/entertainment functionality," Shiffler said.
Gartner also isn't sure whether vendors' attempt to push the PC into the living room will meet with much success this year. Since Microsoft released its, PC vendors such as and have been debuting PCs that are promoted as digital media hubs.
Despite this push, the price and complexity of entertainment-focused computers is hindering their adoption, Gartner suggested.
"Media PCs remain relatively expensive and suffer from spotty reliability, as well as troublesome ease-of-use," Kiyomi Yamada, an analyst for Gartner's Client Platforms research, said. "PCs are also handicapped by low interoperability with other media devices and poor aesthetics. This is hurting their ability to compete against alternative devices that are both cheaper and more readily connected to media sources."