I'm new to the forum and haven't quite found a definitive answer to my question/idea/understanding of rig building intricacies.
I'm in the process of building a mining rig with the following specs: (Critique if you must... )
Intel Celeron G3900
Biostar TB250 BTC PRO (12 GPU board)
8GB DDR400 RAM
6 x ZOTAC GTX1080ti AMP Edition
Corsair 750W PSU
Yama 1600W PSU
Im still waiting for delivery of the motherboard and GFX cards.
In the meantime i have spent hours planning and researching my "modus operandi"
My first question concerns the power spread.
I understand that the two PSUs must be connected via the ADD2PSU adapter, designating one a Master and the other a slave.
My plan is to use the 750W PSU as the Master PSU to power:
- The motherboard/CPU/SSD/RAM
- The first GPU and its riser board (Main GPU connected to the 16x slot via its riser)
and the 1600W Slave PSU to power:
- The remaining 5 GPUs and their riser boards.
Is my logic sound? Will this work? (I do think I might be cutting it a bit fine in terms of total power available...)
How much coordination does the ADD2PSU do? For instance, powering the rig on/off:
- Must the Slave be powered on first, then the master?
- Does the same sequence apply for powering down?
Does it not matter and the ADD2PSU will take care of this by itself.
My second question is related to the motherboard.
This new model of Biostar, the TB250 BTC PRO, has 12 GPU slots and can therefore accommodate up to 12 GPUs, provided that they are a spread of Nvidia and Radeon cards, either 6/6 or 8/4 etc...
Firstly, what is the cause of this limitation (is it the OS?) and secondly, will there be a workaround to allow 12 Nvidia/Radeon cards on one board someday?
all your inputs are welcome!