The $9 CHIP has a mali 400 GPU which is OpenCL compatible. We can rig a really good render farm by getting a few of this beauties and networking cost anyway will be minimum, I guess(Can use wifi). What are your ideas?
Read some of the threads with similar ideas using other cheap boards like a rapsberry pi etc.
It may sound great but they are so abysmal for rendering that you’d be better off with just a dedicated graphics card