Hi,

I've had mining controllers  running on Quad core for a few months now(RK3188). The main issue is that  with 'cheap' kit, you will require hardware modifications as well.

The biggest issue is that many of the Rockchip products from China are not capable of hitting the frequencies they advertise, more specifically when they state '1.xx Ghz' they mean yes the  Rockchip CPU is speced at that frequency… but they then shove in cheap/copy DDR memory chips (because those are expensive, so they use job lots from the market) in some cases even the same product from the same supplier are different spec DDR memory chips….

In many cases the CPU quad cores are only running at a few hundred  MHZ even though the damned chip is speced at >1ghz

Another issue is that you may have to split open the products and get a much larger heatsink onto the rockchip CPU , because many of these products don't even have a heatsink or the copper area to pull the heat correctly!! ( had one desolder itself from the pcb when the frequency was ramped up, one reason why I had not posted the details )

Then to top it off you have the idiot companies that have put hardware 'bugs' into the products, so that changing/replacing the kernel deliberately cuts functionality or causes the  HDMI display to collapse in an endless flashing cycle( also looks like it has been done to stop their kernels being used on other products)

However once you get the quad core things setup and the 'right' product then they make fine mining controllers…..

The other product I threw together was a 'bridge board' that allows the quad cores/ Raspberry pi's to pull the current they need from the metal hubs I sell, basically a single hub/integral psu to power the miner & controller all from a single supply.

RF