This test shows the effect that heat has on LEDs mounted on three different types of circuits. The circuits being tested are: A STANDARD FR-4 printed circuit board, and UPGRADED Metal Core Board and a Relume SILVER CIRCUIT.

All three circuits started at a room temperature of 75 F degrees before the circuits are turned on. After only a few minutes the STANDARD circuit has risen to 272 F degrees, the UPGRADED circuit temperature has risen to 132 F degrees, but the Relume SILVER CIRCUIT has risen to only 89 F degrees. The photograph also clearly shows the significant difference in LED brightness in the three tested circuits.