Mine also have the 4 pin regulator, they seem to work fine, if you don't forget to cool them ...
One of mine dropped all the components
because I tought it would run on stock frequency without extra cooling.
I re-soldered them all by hand using flux, and it's up and running again, with printed 40x40 air ducts and fans connected on them, now they behave and don't drop parts
Whatever you do, use the Kano version of cgminer, it runs more stable then the other versions found on github and is running with about 0.5A less power usage for the same frequency settings ...
One of mine dropped all the components
because I tought it would run on stock frequency without extra cooling.I re-soldered them all by hand using flux, and it's up and running again, with printed 40x40 air ducts and fans connected on them, now they behave and don't drop parts
Whatever you do, use the Kano version of cgminer, it runs more stable then the other versions found on github and is running with about 0.5A less power usage for the same frequency settings ...
Yeah, cooling can be a huge issue as far as I can see here from the comments. Good to hear, you could fix yours.
I'll be very cautious, but thanks for the warning. I've already bought a 10 cm (diameter) fan. It'll turn out really quickly if it's enough or have to buy a bigger one. Hopefully will do it 
I've made some research and this forum is a real gold mine! Firstly didn't know which version to use and after comparing them decided to rather go with Kano's cgminer. It seemed the most up-to-date with some extra Ferrari adjustment possibilities, but now I'm sure this is really the right one to run with. Thanks for the tip!! Can't wait to start the engine though
