RTL-SDR Running on an Aria G25
Blogger and ham radio enthusiast F4GKR has written a brief tutorial post on his blog showing how he got an RTL-SDR working with an Aria G25, and in another post some benchmarking results. The Aria G25 is a very small low cost, Linux capable embedded computer, similar to the Raspberry Pi.
He was able to get rtl_tcp running with a 2 MSps sampling rate and found it used about 60% of the CPU.