Just thought I would add my thoughts and experience of the Onda D1800 BTC 6 GPU riserless board with integrated CPU.
Free delivery from China to the UK took just under 1 month, so as expected really. The price for express postage was pretty steep for just one board so I thought I would just wait a bit longer. Price was £96 which I think is really good, but there was an offer on at the time and the seller I bought from no longer has stock.
The board it self looks to be good quality, includes one short yellow sata cable with a 90 and straight connector. Two things of note, the GPU spacing is a little closer than I was expecting. Cooling for me is fine at the moment as its winter and the ambient of 5c in my garage really helps! I've wedged my Asus Dual cards apart as I don't have any GPU support at the moment and the fans might touch the back of the adjacent card. For summer I would like to support the GPUs to keep the spacing uniform and also to mount some fans along the back of the cards to pull out heat.
The second thing is the stamp on the board reads Onda D1800 BTC Ver:1.00, however a sticker between the last two PCIE slots containing the serial no. reads Onda D1800 BTC Ver:2.00. I'm more likely to believe the sticker so I think this is the version 2 board. I also note the advert I bought from showed photos without a VGA port, but mine does have a VGA port which I prefer.
For the power supply I am using an ATX PSU, EVGA 750w GQ - note other have had issues which lead to returning them so I won't buy any more. I have 2x molex connected on one branch, 1x molex with sata adapter and 1x sata connected on another branch, then the remaining 2 sata connectors on one branch each. Ideally I wouldn't have used the sata adapter but I feel its better to use that than 3x molex from one branch.
For graphics cards I am currently using 3x 1060 3gb and plan to get 3 more. Variants are 2x Asus Dual and 1x Asus Phoenix mini card. The PSU has 6x 6+2 PCIE connectors so that works out well.
Setup was an absolute breeze, I just plugged in all the power cables, 4gb 1600mhz 1.35v DDR3L sodimm stick, dropped in all 3 GPUs, plugged in a USB stick with SMOS on it, ethernet and monitor to the HDMI on the first GPU (should have used the on board VGA). Turned on the power switch on the PSU and the motherboard beeped, then sprung in to life. GPU fans fired up 30s later so assumed it was starting to mine. I didn't get any display on the screen from the HDMI on the first GPU, so tried the other GPUs but no dice. I then plugged in to the on board VGA and bingo, there was SMOS console mining away happily!
I didn't need to do any BIOS update or tweak any settings, literally just plug and play. You cant ask for better than that! Logged on to my SMOS account, set up the worker name and overclocks to +100 core, +350 mem, power at 80w and 60% minimum fan with 70c target. This gives me 270-280 sols per 1060 3gb on DSTM equihash, pointed at Nicehash for now.
Power draw when mining is 265w, very good I think, assuming 80w per card that's 25w system power draw.
Temps with 5c ambient and no additional fans were 55c for the back card Asus Dual (worst airflow), 45c for the middle card Asus Dual, and 37c for the front card Asus Phoenix mini.
Overall impressions is very good, I will be looking to buy more for expansion when £££ permits
