let me get it straight:
dual gpu board on 1x pcie 1.0 = 1/2 * 1/16 * 1/2 = 1/64 pcie speed per gpu than a single gpu board on 16x pcie 2.1
no visible difference in hashing speed.
I don't understand what you're saying about my particular question but I'm seeing threads where people are running 7GPU from this board somehow - that's what I'm trying to figure out.
Here's an example of someone running A LOT of GPUs off my board:
https://bitcointalk.org/index.php?topic=94657.0So it seems to be a possibility. I just need to figure out what will be needed and which cards to put in the x16 slots and which to put in the x4 slot.
Right now I'm thinking the low-spec desktop graphics can go in the 4x and the two processing GPUs can go in the x16 slots.