Hello, I bought a diode with driver from DTR and measured the power consumption. It showed 10w for a 2.7w diode. The diode is a NDB7875 445nm and the driver is a Super X-Driver/1.6A-2.4A/6V-9V 2A+. Is it supposed to be that inefficient? Does it supposed to have thermal paste going to it as 7w is a lot of heat. Thanks in advanced.