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hello I have a question about pin fin heatsinks. Can I mount 2 cobs on 1 big pin fin ? https://m.alibaba.com/product/60434900941/Cold-Forged-LED-Heatsink-with-Diameter/specifications.html something like that and then putting 2 citizen cobs on it each cob+holder is 55mm in diameter. So I will...

Hello nevergood I have question you have tested the high cri90 and cri70 right? What are you thoughts on it ? I just discovered that HPS is 22cri and that shocked me. I thought higher cri is always better but there is a big lm/w between the cri70 and 93 from citizen.

Yeah I was wrong. But what about this idea Putting 2 clu48-1212 @ 1050= 35.7watt on 1 of these bad boy https://m.alibaba.com/product/60434900941/Cold-Forged-LED-Heatsink-with-Diameter/specifications.html 5$ per one cob for cooling sounds pretty fair to me

Haha I know chinese are nice before you pay after you pay they forget about you. But if I understand good if you buy samples no vat ? And what about the receive did they put the original price ore they made it lower?

Very nice price but vat ? Did you not got caught?

Nvm

Nice but he is in the UK so shipping+vat is going to hurt. Ore can you tell me where we can those sinks you talking about for lets say 10€ ?

Hello m8 why not use active coolers like this one ? https://www.overclockers.co.uk/arctic-alpine-64-gt-cpu-cooler-80mm-hs-044-ar.html And like other ppl I suggest you running them on 1750ma and whit this cooler it will do more then fine. Dont go for a driver that you need to paralel wire...

Hello mark I have a question about the 1050ma version. How much 37.5watt cobs will it run ? 10 ore 11 I am shure it will run 10 becouse thats 375watt in total. But 11 makes 412.5watt in total so what you think?

Yeah I made a mistake its this one http://www.tme.eu/en/Document/8d3da188a7a19f2f15b33eb988e2b79f/CLU058-1825C4-DTE.pdf

Run the citizen on 700ma you will only lose 10lm/w but gain 2x more power, you can run 8 on a 185-700 :)

No he said inside the hp box and normally there allot of fans in a server box. It has 2 for each cpu http://www.pcworld.idg.com.au/slideshow/295951/pictures-taking-apart-hewlett-packard-proliant-dl380-g5-server/?image=5

Maybe the clu058-1528 is a better choice for me and rund them high and just use a cooler with fan. Can I run 4x clu058-1528 at 2100ma on one ? http://en.hzzhpower.com/upLoad/product/month_1601/PF-P400CC-Cxxx-S%28U%29-XX.pdf On the citi pdf it says that the voltage is between 47v min to 56v max...

I can cut some fins NP I understand what you say I looked at the alpine m-1 passive it keeps a 35w at 49celcius with only 250 gram of alu. https://www.arctic.ac/eu_en/alpine-m1-passive.html But like you said the fins have more room for air between, i need to cut some of that heatsinks

Then maybe 700ma more spread better effi and lesser cooling. Hampster you mean with ore withouth fan ? Have you worked with these heatsink ? 1050 = 36w 700ma= 24.4w so not 50watt

Guys I want to run the citi 1212 at 1050 do you think this will keep it cool ? http://m.servershop24.de/item/32373638 Its pretty heavy 700g each and has a copper base plate of 1/3 inch. Here are some more pics...

Hmm oke ty for the answer I can get the 70cri version for the same price as the 80/90 cri but the 70 cri has much better lm/w ratio. I know the difference between 3k and 4k but what drives are the cri

Kmog33 what difference have you see when compared cri70 against cri80/90 ?

Hello my friend where you from ? If from holland NP if from outside the Netherlands I cant becouse when I buy I use my company name and I need to sign that I may not sell outside the NL its a rule by citizen.

Weird I am paying in Holland 10.4€ for each 1212, 14€ for 1812 and 20€ for the 1818. Shipping free and no vat. But you can only buy them in trays of 30 pieces. Does somebody know if this passive cooling wil do the work ? http://m.servershop24.de/item/32373638 Its 700g alu with a coper base...