If you are looking for something more powerful to replace your raspberrypi then HummingBoard might be the solution. It has the same dimensions so you can still use the raspeberrypi  case. It comes in three flavours with the most advanced one been really impressive. 

	HummingBoard-i1	HummingBoard-i2	HummingBoard-i2eX
System On Chip	i.MX6 Solo	i.MX6 Dual Lite	i.MX6 Dual
Core Count	1	2	2
Memory size	512MB	1GB	1GB
Memory Config	32 bit, 512MB @ 800Mbps	64 bit, 1GB @ 800Mbps	64 bit, 1GB @ 1066Mbps
GPU	GC880	GC880	GC2000
3D GPU Type	OpenGL ES1.1,2.0	OpenGL ES1.1,2.0	OpenGL ES1.1,2.0 Quad Shader
Video Engine	Multi format video decoder and encoder	Multi format video decoder and encoder	Multi format video decoder and encoder
HDMI 1080p with CEC	1.4, 3D support	1.4, 3D support	1.4, 3D support
LVDS Display Out	X	X	V
MIPI CSI 2.0 Camera	2 Lane CSI-2	2 Lane CSI-2	2 Lane CSI-2
Wired Network	10/100	10/100	10/100/1000 *
PCI-Express Gen 2	X	X	V
mSATA II	X	X	V
Powered USB 2.0	2	2	2
Powered Internal USB 2.0	X	X	2
UHS-1 Micro SD interface	V	V	V
RTC with backup battery	X	X	Battery provided separately
Coax SPDIF audio out	V	V	V
Audio Out	PWM Mono output	PWM Mono output	Analog Stereo out and MIC In
Infra Red Remote Control Receive	X	X	V
GPIO header	UART, 8 GPIO, SPI with 2 CS, I2C **	UART, 8 GPIO, SPI with 2 CS, I2C **	UART, 8 GPIO, SPI with 2 CS, I2C **

 

Get ready to fall in love with new HummingBoard – a small and powerful, low-cost ARM computer that ignites the imagination. Whatever your dream, the HummingBoard will help make it happen – the possibilities for creating the next great IoT innovation are truly limitless. The HummingBoard allows you to run many open source operating systems – such as Ubuntu, Debian and Arch – as well as Android and XBMC. With its core technology based on SolidRun’s state-of-the-art Micro System on a Module (MicroSOM), it has ready-to-use OS images, and its open hardware comes with full schematics and layout. Best of all, as a Linux single board computer, the HummingBoard is backed by the global digital maker community, which means you can alter the product in any way you like and get full kernel upstreaming support and all the assistance you need.

More information here: http://www.solid-run.com/products/hummingboard/