As the only major system player that doesn't offer both a CPU and a graphics processing unit (GPU), Nvidia has no choice today but to get with the program, say experts.

Not having a CPU wasn't an issue for Nvidia when desktop PCs ruled the world and integrated GPUs were

With powerful GPUs for add-on cards , Nvidia's revenues grew from US$158 million in 1999 to $4.1 billion last year.

But the chip market has .

Not only is there no room for add-on cards, but with mobile devices, the GPU's raw speed is less important than size, wattage and playing well with other internal components, says In-Stat analyst Ian Lao.