There is no denying the fact that Raspberry Pi has helped raise awareness of the possibilities for not only small but also inexpensive computers. But it's not powerful enough to do some CPU-heavy work, while faster options are emerging for users attracted to such board-like devices.
Giayee P105 Quard-Core ARM Ubuntu/Android Mini PC is just a powerful alternative.
Giayee P105 is based on a Quad core 1.6GHz Rockchip RK3188 SoC with integrated GPU （quad Mali-400）, enabling the device to run as a server (email, file, web) and also as a media center. Although Raspberry Pi can do these things also but Giayee P103C is faster. Besides, Giayee P103C can support high-end features such as 1080P video.
Compared with Raspberry Pi's one HDMI port, Giayee P103C supports VGA port, with 16 or 32bpp color depth, can be set up to 1920x1080 definition. The Giayee P105's three USB ports also gives it a bit more breathing room, relative to the one on BeagleBone Black.
There are two configurations depending on which CPU ,how much RAM and on-board flash storage you want. The less expensive Giayee P105 goes for $49 and has Rockchip RK3168 Dual core ARM Cortex A9 1.2GHz CPU, 1GB of RAM, 8GB of flash.By comparation the BeagleBone Black revision C has a single core ARM with 1GB of RAM and 4GB of flash and is offered at $55.
Giayee P105 will blow your doors off with high-performance specs, but it will not blow all the cash in your wallet. If you want a small low-powered, low-cost but powerful machine Giayee P105 might be just what you are looking for. Even if you are happy with your current device, this would make a great gift or perhaps a great backup device.