Re: [ANN] cudaMiner - a new litecoin mining application [Windows/Linux]

Any ideas?

Yes. The chipset only support 4 PCIe 1x slots off the socket - it delegates any more to the northbridge, which may behave differently/slower possibly?

see the chipset diagram http://cdn.overclock.net/f/f3/f30d12f6_AMD_A85X.jpeg
from
http://www.overclock.net/t/1459052/amd-a10-7850-preview-by-flank3r

Makes sense. I have a Z77 board here I can test out but I don't have a CPU cooler right now.

I tried pushing the clock a little bit (was set to auto, and it was listed as 1.2, so I assumed 1.2v is the default, pushed to 1.25..).

Really curious as to why this works with 6 AMD GPUs and not 6 of these NVIDIA cards... :/

So the board I have is A88X, codenamed Bolton-D4. You linked to the A85X Hudson D4 chipset. I'm unable to find a similar diagram that shows the A88X diagram.

http://en.wikipedia.org/wiki/Comparison_of_AMD_chipsets#Fusion_controller_hubs_.28FCH.29