I built this unit 3 or 4 years ago and updated it recently. Originally it was built with 4x CXB3070 3500K, each pair running off Meanwell LPC 150-2100 and 2 really old generation Bridgelux 2700K COB, BXRA25 or something like that running off a LPC 60-1400 wired in parallel. Not long ago I updated this unit with a cheap Chinese knock off SunBoard with 320 lm561 2700K chips size of 250x250mm running off a Meanwell HLG 150H-24A driver set to about 145W (155W max).
3070's are running at approximately 1900mA according to datasheets. 320 board is mounted to a 28mm high heatsink with a 140mm PC fan running behind it. The fan isn't really necessary but since I had a few left over from my first rig i thought to slap it on top of it. This way I can still get a 200-240W driver and drive that board to the max.
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That's for 1x1m flowering tent.
I also have a small wooden veg box geared with, again, chinese knock off SunBoards, size of 30x400mm and populated with 96 lm561 chips each. There are 4 4000K and 2 2700K strips hooked to a HLG-120H-C1050B
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At the moment running at about 90W
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Next project is grow room with 26 SunBoards 96 running off 2 HLG 320H-C1050B drivers for 640W max.