Not as bright as the old TW series that Cree used to make (Cree BB13-02027OMC-12DE12-1C600). In addition, these LED filament bulbs have a very short lifespan (15,000 nominal hours vs. 25,000 TW nominal hours) and only emit half the light after a few months of use. Of course I leave these bulbs on 24/7, but I had an older 25w TW series LED that was used year round as an outdoor night light and had been on for over 3 years (26,000+ hours) and theirs Light output of these lamps still exceeds 1000β¦