is multiple p4 or q5s more efficient then single p7 or sst?

[waddup]

if were trying to produce 500 lumens for the longest run time whats more efficient?

multiple leds or single?

 

[PhantomPhoton]

They're around the same ballpark, although spreading the heat further apart with 4 separate emitters should come out a bit more efficient.

4 new-fangled Cree XP-G R5 emitters should easily beat out a P7 or MC-E.