I just looked at a
panel on Amazon that was stated as being 600 watts. Uh, yeah. It was a standard ~12"x12" thin aluminum panel with a cheap plastic boxed LED driver. I started to make a "review" but Amazon had a warning pop up that said that there were some questionable reviews and it was limiting reviews to verified purchasers. Interestingly, all the reviews were from people who had received "free" lights to try and review.
First thing, I have an old 50" plasma "tv" (a Panny Pro Panel) fed by a Denon AVR and etc.,...it runs 600 watts (I'm "OCD-Me", so I calculated it long ago
). If you were to pull 600 watts through the plastic box driver of the little square panel I would have to make a wild-donkey guess that magic smoke would soon escape from that magical plastic box. In my opinion If you see a driver box that is made of plastic and looks about the size of a pack of cigarettes (maybe the extra-long kind) then I doubt seriously you're going to be getting 600 watts through it...at least not for long.
The white Yescoms that I've got are around 22-watts, if I recall correctly. The seller gave honest numbers in their ad...I checked them "back when". The small LED driver boxes (plastic) can handle that power.
My Viparspectra XS1000s truly run at 100 watts, which they are listed as being...the LED driver gets warm-to-hot...the energy of 100 watts has to go somewhere and it comes out the driver assembly (metal boxed) rather than through the LEDS and onto the plants. I wouldn't want the power used to light the Viparspectras running through the Yescoms!!! Energy has to go somewhere. Running 600 watts through one of those thin panels and small plastic driver I'd be a bit paranoid about...
*Know* what you're buying. If the specs are vague, they're probably vague for a (seller) reason. Sellers will want to share the specs of good lights and not be vague about them.
Now, don't get me wrong. There are some good lights out there that don't cost an arm and a leg. I've got some 80-watt three-panel, LED garage lights that I bought at Costco for something like $15 each (came in a 2-pack box) and I'm very pleased with them, though they wouldn't be a good "tent shelf" light because they run too warm (in my opinion). I've got those free hanging from the ceiling over my top shelf.
What I'm getting at is that when it comes to shopping the sellers for these 12" square, thin-paneled LED lights...."buyer beware".
Also...."you get what you pay for".
You could throw "There ain't no such thing as a free lunch" in there somewhere, too. Maybe even, "Hold my beer, Bubba, and watch this!!!" Just sayin'....