I have tests too hence why I added hps to grow room when my cheap leds Wernt cutting it not saying it's a shit light cos it's not they good just stating there not 2000 wats like u said it draws 450 wats so then it's a 450 wat light led companys talk pure bullshit about there light etc
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I`m glad you are checking what works for your garden!
When we are talking about watt on the LEDs, we always talk about "Wattage Equivalent", this is mainly so we have an easy way for people like you to get a grasp of that we are talking about.
The term “wattage equivalent” is used to compare more efficient types of light bulbs to traditional incandescent bulbs. Although a watt is used to measure energy consumption, most consumers have used the amount of watts a light bulb uses to determine the brightness of an incandescent bulb. For example, an incandescent bulb that uses 100W would be brighter than an incandescent bulb that uses 40W. Since LED light bulbs consume less energy, they use fewer watts, making it difficult to determine the brightness emitted from a LED bulb solely on the number of watts used. Most LED light bulb manufacturers label the wattage equivalent to that of an incandescent bulb to make it easier for consumers to choose the correct light bulb for their specific lighting needs.
However, since LED light bulbs come in a variety of color types, such as warm white, daylight and cool white, it can affect how bright or dim the light bulb appears. For instance, if a cool white LED bulb has the wattage equivalency of a 60 watt incandescent bulb, the LED light may appear brighter than the incandescent because of the color of light it emits. This can also occur with the type of beam angle the light bulb emits. A light bulb with a more directional beam angle may appear brighter than a light bulb with a very wide beam angle.
So when the seller of your 800 watt LED or my 2000 watt LED, wrote their wattage online, they write the wattage equivalent, because most growers go from HPS light to LED lights, and not the other way around. The buyer (ie me and you) will need an easy way to compare the lights you are about to buy, so therefor they give us the wattage equivalent. They are not lying to us. Most sellers will inform you about the actual drawn power on their product.
Imagine a car with 200 Horsepower and try to guess how fast it goes and how fuel efficient it is.
To simply state that a car has 200 horsepower, has nothing to do with the speed/efficiency of the car. We need to know the 1-60 mph, Weight, Fuel and so on.
If you want to further understand lights and LED`s, I recommend to check out growmau5 on youtube - he`s my main knowledge bank when it comes to LED`s
