hi guys, i am new in the forum but an expert in DIY. i have read many LED vs HPS . so please read carefully my calculatios. and make your own decisions
example:
ordinary 600w Max-Lumens SHP-TS HPS
600W : 90000 (lm)
25 euro ebay only the lamp
versus
one of the best brand name LED available. not some chinese ones that claim only llumens
Cree MC-E Emitter white - BIN MCE4WT-A2-0000-000KA1 Luminous flux by connecting all 4 chips in series:
min. 280 lm at 350mA
max. 490 lm at 700mA
basicaly for you to understand a
5w led emits depending from the current
100-to 240 lumens. this one is 4 leds in one
its one of the brightest available
here is link with more data
http://www.dotlight.de/products/en/LEDs/LED-High-Power/CREE-LEDs/Cree-Emitter-LEDs/Cree-MC-E-Emitter-warmwhite-max-490-Lumen.html
and don't be fooled. power means heat and this heat should be dissipitated somwhere. this with the cool led light is a fiction.
look what they say for that led
Please ensure a sufficient cooling !
This LED can only be operated with an additional heat sink
Caution: The MCPCB can get very hot (~70 °C).
Device failure caused by overheating voids warranty
so, do you understand. if it makes real lumens it makes heat even if its LED. and if it doesnt make heat it doesnt make lumens and it is a scam
ok. lets calculate how many Leds we need to make equivalent of 90000 lumens. we asume that The brand led can make 500 lumens though it makes less. so
90000/500=180 Led x19euro=
3420euro
even if you get them at discount half price its still a lot of money and it needs to be powered by sth.
and this is the best case. the 5w Led which they have in the necessary wave spectre produces 100-250lumens
i wrote this calculation cause i did not see it any where in internet and i believe it would be usefull for you to decide Led or no
even if i am wrong and there are ssome even better Leds they would not be far more better so the answer is the same.
sun and HPS