High-power LEDs offer more than 100 lumen per Watt

Philips Lumileds 1×1 mm2, chip based white LEDs, operating at just 350 mA, deliver 136 lumens for a light source efficiency of 115 lumens/W at a correlated-color-temperature (CCT) of 4685K. At 2000 mA, they deliver 502 lumens at a corresponding 61 lumens/W.