I have the same chipset in my MK808B plus :

https://www.amazon.com/Andoer-MK808B-Plus-Quad-Core-Bluetooth/dp/B017ECQPWI/ref=sr_1_2?ie=UTF8&qid=1467578756&sr=8-2&keywords=mk808b+plus

I found that the thermal limits were being hit and I was getting less performance. So, I put some heatsinks and a small 40mm fan on it :

http://i.imgur.com/JlvWMIW.jpg

Now it runs retroarch as an addon for Libreelec...It runs N64 and psx perfectly with room for shaders.