Should I Order High Power or Low Power LEDs, check my math pls! Long Post!

I am setting up a new grow area and light setup. I will be posting updates as I get things accomplished and get more parts in the mail.

Current Situation
I have a
LPC-60-1400 Meanwell Driver
HLG-185H-C1400B Meanwell Driver
(1) Working CXB3070 3K on CPU heatsink
(2) Damaged CXB3070 3k on CPU heatsinks (may be recoverable, copper solder pads ripped off)

I ended up dropping my setup and destroyed (2) CXB3070s and (1) CXA3070. I had (4) running on the HLG @1400mA ~ 200w and a single CXA3070 on the LPC @ 1400mA ~ 50w. Total ~250w in a 2x2 grow area.

Due to the recent loss of equipment I have been getting up on the latest DIY LED trends and here is what I have come up with for suitable replacements...

LED mA V $ LumFlux Lm/$

BXEB-L0280Z-30E1000 700 21.6 $5.95 1195lm 201.5
BXEB-L0560Z-30E2000 1400 21.6 $4.76 2390lm 502.1
SL-B8V3N80LAWW 1430 25 $21.90 5630lm 257
SL-B8V1N60LAWW 1430 11.2 $13.19 2820lm 213.79
CXB3590 1800 39 $33.04 12134lm 367.25
CXB3070 1900 39 $15.92 9413lm 591.2



Looks like maybe best bang for buck (Lumen/$) is the CXB3070s that I have been using. CXBs @ 1400mA on a CPU heatsink need to be actively cooled. BXEB-L0560Z-30E2000 came in second based on a quick glance, they do not need actively cooled if running at 700mA. So another added cost/hassle is heatsink/fan for CXBs, BXEB-L0560Z-30E2000 can be mounted to a cheap u channel piece of aluminum.

Given my current equipment options I thought of buying CXB3070s again, maybe buying the BXEB-L0560Z-30E2000 or buying a mixture.

LPC-60-1400
9-42v
1400mA
58.8w

Used to drive a single CXB3070:

(39v)(1400mA)= 54.6w
(54.6w/58.8w)(100%)= 92.8%
LumFlux -> (80%)(9413lm)=7530lm
(7530lm)/(15.92)=472.9

Used to drive (4) BXEB-L0560Z-30E2000:

2 LEDs wired in series, wired in // to 2 other LEDs wired in series. (4) LEDs total

19.5v @700mA = 100%LumFlux

(2)(19.5v) = 39v (1 series)
(39v)+(39v)=39v(//)

(19.5v)(.7A)=13.65w
(4)(13.65w)= 54.6w
(54.6w/58.8w)(100%)=92.8%
LumFlux->(100%)(2390lm) = 2390lm
(4)(2390lm)= 9560lm
Lum/$= 502.1

So for the LPC-60-1400 I would get about
(9560lm-7530lm/(9560lm+7530lm))(100%)= ~11% Increase in Lumens with BXEB-L0560Z-30E2000 setup

Cost:
(1)CXB3070 - $15.92
or
(4)BXEB-L0560Z-30E2000 - $19.04

BXEB-L0560Z-30E2000 setup costs slightly more but will run a lot cooler, provide more lumens.


HLG-185H-C1400B
71-143v
1.4A
200w

(4)CXB Setup
(4)(35v)= 140V
(140v)(1.4A)=196w
(196/200)(100%)=98%
(4)($15.92)=$63.68
LumFlux->(80%)(9413lm)=7530lm
(4)(7530lm)=30,120lm
(30,120lm/$63.6=472.98

(14)BXEB-L0560Z-30E2000 Setup
(7)(19.5v)= 136.5v
(136.5v)(.7A)=95.5w/7 BXEBs
(2)(95.5w)=191.1w Total
(191/200)(100%)=95.6%
(14)($4.76)=$66.64
LumFlux->(100%)(2340lm)=2340lm
(14)(2390lm)=33,460lm
(33,460lm/$66.64)=502.2

So even though the CXB setup has a higher driver efficiency by about ~2.5%, it has a total output of 30,120lms compared to the 33,460lms of the BXEB-L0560Z-30E2000. Seems like ~10%more lumens with the BXEB-L0560Z-30E2000 setup.


In Conclusion

LPC-60-1400 ->Use (1) good CXB I already have [email protected]=~50w
HLG-185h-C1400B -> Buy (14)BXEB-L0560Z-30E2000 136v@700mA=~191w

Total 241w draw at wall, 40,990lms total, 4sqft grow area
~60w/sqft, 10,247lm/sqft

Shopping List
(14)(BXEB-L0560Z-30E2000@$4.76)= $66.64

Any thoughts/corrections/additions are much appreciated!

p.s. - Quick google search shows 400W HPS puts out about 44,000-50,000 lumens when new, shows ~200w LED should be equivalent. Would you take this setup or a 400w HPS?

If you're gonna spend money, don't buy cobs. Buy some samsung or bridgelux strips instead. Might as well upgrade. Only reason I can think you'd maybe wanna do cobs again is the sole fact that you've got the heatsinks already but 1" angle aluminum is plenty of heatsink for strips.

And is your last question even a question?
For the same amount of light output, do you wanna use 200watts or 400watts?

200w in a 2x2 is a fair amount these days.

Interested to hear what you pull from that space with your old 3070s?

Id have a look @cobshopgrow latest setup with blux gen3: he can hardly go over 200w in a 3x3 without bleaching.

kinda hard to answer that one, all i see is product numbers. volts amps and watts. lumens and lumens per dollar, dollars and everything in between.
theres more to it than just all that.
what spectrum are the diodes? what angle do they shine at? not many people on here go out and buy every style of LED light there is.

"driver efficiency " has to do with electricity savings

ps..good job ..don't over think this..they are only very similar led lights..most of the rest of the equation is up to grow talent/environment