40$ 800W led board

Other Types of Lights LED Light Bulbs
1

I found these interesting beasts on aliexpress:

800W board for 40$ and 1000W board for 60$
They seem to have 800 or 1000 emitters

Of course it’s quite unrealistic to run them all full power, at least from my experience with the 50-100W COBs, but I’m looking towards running them at 700mA (out of 5 or 6A), hoping to keep the heat under control with a properly sized heatsink, preferably passive if I can get one big enough

Has anyone on here bought it yet or has any more info on them whatsoever?

2

Thanks, I didn’t know there was such a difference
It seems like the standard
“how many zeroes for this one?”

And they went with 100000 lumens
So I assume they are advertising 100lm/W at 1kW

I’d still like to see some tests, maybe they’d surprise us

Do you think the cooler could dissipate the 75W of heat from that COB passively?