Matt from DIY Perks has done it again, unboxing and wiring up "the most powerful LED COB in the world", the Yugi LED 1500 Watt COB.

https://www.youtube.com/watch?v=bBV-1VNWscA

This thing is a beast and requires a large, copper water block with liquid cooling. Definitely not for the average DIYer, but some interesting things going on.