$38 USD each. How do you heatsink this? 87W typical and 137W max. for 2.4A typ. and 3.6A max. at 34-38V.
It has no mounting screws (like the CMA series) and flashlight guy used some glue... oh I found the silly holder pic below.
It looks like a great powerful LED with Cree's high quality.
I'd like to try one (dimmed) for task/bench lighting but it's an expensive solution, including holder, heatsink, power supply.
There are some light fixtures on eBay/Ali using this CXB3590 LED for grow lights.
I tried the high-power chinese 50-100W LED's and found the light quality was poor. Fringing, low efficiency, colour temp shifting all over the place, lens is like beer goggles.
It's hit or miss with vendors. I just didn't like the LED's enough to go further with them.
An option is Cree
XLamp XHP70 array 6V 2.1A 12.6W and ~1,600 lm which almost 1/10 the flux of the CXB3590's ~13,000 lm. I guess you could use a bunch of these XHP70's on m-core PCB but kind of a narrow spot each.