I have got 3 5870s and a 5970
the first 5870 is connected to the first x16 slot and the 5970 to the second x16 slot which goes through the x38 chipset (pcie 2.0). No problems here.
the remaining two 5870s are connected via risers to the x1 and x16(x4) slots which goes through the ich9r.
My problem is that the card connected to the x1 slot crashes instantly when starting mining
/connecting display to the card if the card on the x4 slot is connected. All the cards work rock solid otherwise. This happens regardless of the other cards being mined or standing still.
I tried also to set the x4 slot card to x1 mode by applying tape to the connectors but no change.
My mobo is the abit iX38 QuadGT, win 7, amd 12.1 drivers with v2.5 app sdk.
Any ideas on how to fix this?
This is clearly a driver issue as this setup works on BAMT also the 11.6 drivers don't crash the system if this x1 slot card is used.
Using the 11.6 drivers however is not a solution as I don't have enough displays/dummy plugs/resistors + the cpu bug is really killing my PSU and temps.