I have a GTX470, a pci sata raid controller, and GT440 for physics.... The thing is my physics card is running on X1 lane!!! WHY ??? It design to work on X4 w/ a SLI configuration and I don't have sli and its running on X1.....
I have a DFI Lanparty x38 mobo ... It has 3 pci-express x16 ... Two for sli and the last one is for physics w/ three lane occupied it will run on x16x16x4 (these w/ sli configuration w/ physics)....
I cannot see anything on bios or on the board to configure the pci-e lane... but like I said the card do work. it just puzzled me of seeing on x1
http://www.xbitlabs....tx38-t2r_2.html
Is this your card?? Board sorry, is this your board??
If it is this board then its actually a AMD Crossfire board, not a Nvidia SLI board.
I'd be tempted to boot up your PC using just the GT440 in the 3rd slot and see what it says it's running at then.
Edit: How many cards are you running? If your just running one GTX 470 and one GT 440 then you should be able to use the first 2 slots so you can run at x16 for them both.
pci-express clock 100mhz-250mhz.... What is this mean? its currently on a 100mhz. Do I need to increase this to 250mhz to have them running on X16 bus?