New XLamp MK-R LEDs Deliver Record-Breaking Efficacy and Next-Generation Price-Performance for LED Arrays Two years after breaking the 200 lumens-per-watt (LPW) R&D efficacy barrier, Cree, Inc. (Nasdaq: CREE) delivers another industry first with the introduction of the Cree XLamp MK-R LEDs. The new MK-R LEDs leverage the SC³ Technology next-generation LED platform to deliver up to 200 lumens-per-watt (at 1 W, 25°C) LEDs. The new MK-R LEDs make the next generation of 100+ lumens-per-watt system possible ...